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Thread: HELP Intake gaskets and injector swap gone bad, engine hydrolocked

  1. #1
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    HELP Intake gaskets and injector swap gone bad, engine hydrolocked

    Guys i need your help, something went terribly wrong. I did all intake gaskets today along with OSV and new vanos fuel injectors today. I took the whole manyfold off, fuel rail etc. I swapped my old non-vanos fuel injectors to the vanos injectors (boch style 4 with all new gaskets filters etc). When i hooked everything back car run terryble (like a misfire) for a few seconds than died. I tried to start again and same thing only followed by sound similar to backfire.At that point i double checked the connectors and everything seemed ok. Also i took the maf to look in the intake and noticed when i opened the seconfary butterfly a litle bit of smoke came out of the intake manifold...At this point i left everything as is and waited for my mechanic to come. When we tried to start again the engine would just click...would not turn over.He checked everything out and thinks that gas filled up the cylinders...tommorow we ll be takin everything upart again and takin off the plugs to check for fuel. Could it get hydrolocked because of new injectors? Or did i forgot to connect something or have a major air leak? I am looking for any ideas guys please help me out.All parts are oem bmw.



    96 bmw 740il / M-pars/ bilstein shocks & Rd springs/ 750 brakes/ alpina lip / clear corners, sidemarkers and oem taillights/ ACS roof wing /M-pedals/ facelift grills and headlight bezels /Bi-Xenon/ umnitza Orion V2 angel eyes /HID low beams and fogs/ double pane windows / navigation & tv tuner / 750 all-leather black interior / floor lights/oem wood steering wheel/pornlights /wood b-pillars / wood maplight & seatbacks / window shades, black alcantra headliner/ 750 heated seats & power heated rear seat / gloss trim / lighted interior door handles/ HKS Intake / high flow cats/E60 M5 mufflers


  2. #2
    meteck's Avatar
    meteck is offline Houston CCA Houston 7ers BMW CCA Member
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    Pull the plugs and try to turn the engine over. If HL, something will come out the holes.





    Totally stock 97 740iL except for SatRad

  3. #3
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    sorry bro but one of two of the manifold gaskets is inside the INTAKE. Huge vaccum leak I would say, It happen to me. The engine sound was hard knocking with backfire and engine idle would not hold.. You should also be smelling gas right? ..I tried reving it but it would die quick. I had no clue as to why but calmed down and removed everything again...What I found was 1 of the manifold gaskets inside intake#4( backside of passenger engine ). 1 half of the profile gasket went inside the intake... I had to reuse 1 of my old 1`s because the new gasket got torn up......When I went to the M60 manifold I bought all new manifold gaskets. I tripled checked to make sure the gaskets were fllush on the intakes and NOT inside em....
    2000 740i Sport

  4. #4
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    Cazal please tell me i dont need a new motor....i dont care if i have to take the manifold apart again, i just hope nothing got damaged since the car doesnt even turn over now, yes definately had engine knocking. So tommorow morning will take it all apart again.
    Last edited by stas2007; 05-28-2011 at 11:19 PM.



    96 bmw 740il / M-pars/ bilstein shocks & Rd springs/ 750 brakes/ alpina lip / clear corners, sidemarkers and oem taillights/ ACS roof wing /M-pedals/ facelift grills and headlight bezels /Bi-Xenon/ umnitza Orion V2 angel eyes /HID low beams and fogs/ double pane windows / navigation & tv tuner / 750 all-leather black interior / floor lights/oem wood steering wheel/pornlights /wood b-pillars / wood maplight & seatbacks / window shades, black alcantra headliner/ 750 heated seats & power heated rear seat / gloss trim / lighted interior door handles/ HKS Intake / high flow cats/E60 M5 mufflers


  5. #5
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    Your probably OK dude, just take it all apart, and take your time with the re-install of it all.
    Lucky you, you don't have my problem lol.

  6. #6
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    No u don't stas
    ...once u pull everything aparr and reinstall everything back right(slowly) ur engine will be back to normal. It will run ruff for 10 minutes. Turn off engine a restart it. I remember like I was yesterday. Prior to finding out the gasket was inside the intake my engine wouldn't start either and when I tried to turn her over the engine sounded like death. It wouldn't idle period. Again make sure the gaskets are seated righ and make sure the vent tube is on right underneath
    The extra gas in th intakes will mqke the initial start sound crappy but it will smooth out.
    2000 740i Sport

  7. #7
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    take the plugs out and crank the engine to get the gas out.

    Once done (be sure battery is full) try again and listen for vacuum leaks

    Have a technical question, don't send me a PM but post it on the board so others can benefit from it!

  8. #8
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    Ok took the manifold off again, the gaskets were fine, i did find oil between one of the glasses looking gaskets and the opening with the valves; i am taking the plugs out now. On the side noye i really dont like how the new injectors sit, i can turn them with a bit of force while they are connected not sure if thats ok.



    96 bmw 740il / M-pars/ bilstein shocks & Rd springs/ 750 brakes/ alpina lip / clear corners, sidemarkers and oem taillights/ ACS roof wing /M-pedals/ facelift grills and headlight bezels /Bi-Xenon/ umnitza Orion V2 angel eyes /HID low beams and fogs/ double pane windows / navigation & tv tuner / 750 all-leather black interior / floor lights/oem wood steering wheel/pornlights /wood b-pillars / wood maplight & seatbacks / window shades, black alcantra headliner/ 750 heated seats & power heated rear seat / gloss trim / lighted interior door handles/ HKS Intake / high flow cats/E60 M5 mufflers


  9. #9
    Xephius's Avatar
    Xephius is offline 665 Neighbor of the Beast BMW CCA Member
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    Stas,

    Everything is going to ok. The chances of an injector failing on the wide open position is very very very very rare.... Very rare. At best it would leak. As previously said, you probably just have a intake leak from a gasket or hose missing.

    The injectors can move freely when freshly installed. Remeber they hold vacuum and not pressure inside the manifold, so it doesn't take much. Just be sure the fuel rail is bolted down properly to hold the injectors in place. It is ok if the spin in place, especially with all new seals.

    John

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    Well my block cracked....found a big hole next to the starter in the motor , i guess time to look for new engine or call it quits and buy a corolla. I still want to know how could this happen, cause if i get a new motor i have lots of new parts for it, and dont wanna crack another block.So ye i guess this is becoming one of these convince me to keep my car threads....



    96 bmw 740il / M-pars/ bilstein shocks & Rd springs/ 750 brakes/ alpina lip / clear corners, sidemarkers and oem taillights/ ACS roof wing /M-pedals/ facelift grills and headlight bezels /Bi-Xenon/ umnitza Orion V2 angel eyes /HID low beams and fogs/ double pane windows / navigation & tv tuner / 750 all-leather black interior / floor lights/oem wood steering wheel/pornlights /wood b-pillars / wood maplight & seatbacks / window shades, black alcantra headliner/ 750 heated seats & power heated rear seat / gloss trim / lighted interior door handles/ HKS Intake / high flow cats/E60 M5 mufflers


  11. #11
    Xephius's Avatar
    Xephius is offline 665 Neighbor of the Beast BMW CCA Member
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    Wtf?

    I don't see how an intake upgrade could cause a cracked block. Something else must be afoot. I will send you a pm with my number. Let's talk.

    John

  12. #12
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    Cracked block


    Wtf? When I tried to start my car, like an idiot, I kept trying to make it hold idle for like 20-30 mins. I could of put money I ruined my engine they way it tried to start. Bang bang bang idle bang ...It was ridiculous the way I was trying...but it went back to smooth idling the next day...Cracked block for different fuel injectors? thats crazy. BTW was it your 740il or your 750iL that went bad?
    S62 engine in ur future?
    Last edited by cazal740i; 05-29-2011 at 02:11 PM.
    2000 740i Sport

  13. #13
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    Wow what a bummer! I heat hearing about this stuff. Well If you were to buy an econo box it would still be more cash then it would be to just replace your motor...

    Running on all 8 cylinders once again!

  14. #14
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    Sorry stas...

  15. #15
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    Basically if sounds like the engine hydrulic'd which caused the rod to break and that is what put a hole thru the block.

  16. #16
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    Sorry to hear this Stas.

  17. #17
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    Damn, sorry stas that sucks

    Get a new engine rather than buying a POS...at least you know everything that's gone into your car.

  18. #18
    meteck's Avatar
    meteck is offline Houston CCA Houston 7ers BMW CCA Member
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    Replacing the engine is still better than replacing the car.





    Totally stock 97 740iL except for SatRad

  19. #19
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    Ok i am looking for a new motor asap if anyone knows about one around mass please let me know! Will most likely come pick up around rhode island new york etc if the price is right. I still wanna know how this happen so throw some ideas at me, the engine hand cranks to a certain point than stops , second cylinder is stuck from the driver back side. The big chunk came of the passenger side next to the starter.The thing that sucks most that this was and valve cover gaskets was the last project on my car. I mean i had zero issues with my car with 200k, my tranny has 60k and pretty much everything else possible got replaced.



    96 bmw 740il / M-pars/ bilstein shocks & Rd springs/ 750 brakes/ alpina lip / clear corners, sidemarkers and oem taillights/ ACS roof wing /M-pedals/ facelift grills and headlight bezels /Bi-Xenon/ umnitza Orion V2 angel eyes /HID low beams and fogs/ double pane windows / navigation & tv tuner / 750 all-leather black interior / floor lights/oem wood steering wheel/pornlights /wood b-pillars / wood maplight & seatbacks / window shades, black alcantra headliner/ 750 heated seats & power heated rear seat / gloss trim / lighted interior door handles/ HKS Intake / high flow cats/E60 M5 mufflers


  20. #20
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    How did this happen?

    Not from an intake swap!?!?!?

    Have any pics?

    Have a technical question, don't send me a PM but post it on the board so others can benefit from it!

  21. #21
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    Man that's terrible I feel your pain man. Sounds like maybe something fell into your motor or something, or it was just some crazy coincidence.

  22. #22
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    Quote Originally Posted by stas2007 View Post
    Ok i am looking for a new motor asap if anyone knows about one around mass please let me know! Will most likely come pick up around rhode island new york etc if the price is right. I still wanna know how this happen so throw some ideas at me, the engine hand cranks to a certain point than stops , second cylinder is stuck from the driver back side. The big chunk came of the passenger side next to the starter.The thing that sucks most that this was and valve cover gaskets was the last project on my car. I mean i had zero issues with my car with 200k, my tranny has 60k and pretty much everything else possible got replaced.
    here is some in your area, this may help you out?


    mile1997
    Engine
    BMW 740 i(4.4L) Y2675$799Jack's Used Cars and Parts USA-MA(North-Billerica) Request_Quote 1-888-873-5225 Request_Insurance_Quote
    </B>181996
    Engine
    (4.4L)176,027A$PJ332$1100LKQ - Advanced Auto Recycling USA-RI(Cumberland) Request_Quote 1-800-447-1034 Request_Insurance_Quote
    </B>311998
    Engine
    BMW 740 i1 YEAR PART WARRANTY62,000AG04010$1995.74Nationwide Auto Recycling USA-MA(Lancaster) Request_Quote 1-866-534-0477 Request_Insurance_Quote
    </B>321998
    Engine
    BMW 740 iCHK115,000AF12007$1295.69Nationwide Auto Recycling USA-MA(Lancaster) Request_Quote 1-866-534-0477 Request_Insurance_Quote
    </B>321998
    Engine
    BMW 740 i6 MONTH PART WARRANTY108,000AG02036$1295.69Nationwide Auto Recycling USA-MA(Lancaster) Request_Quote 1-866-534-0477 Request_Insurance_Quote
    </B>321997
    Engine
    BMW 740 i AG02022$995.72Nationwide Auto Recycling USA-MA(Lancaster) Request_Quote 1-866-534-0477 Request_Insurance_Quote
    </B>321998
    Engine
    BMW 740 iTMU NN182$750Berkley Used Auto Parts USA-MA(Berkley) Request_Quote 1-800-242-0290 Request_Insurance_Quote351997
    Engine
    BMW 740 i(4.4L),4.4L 11P0206$1100Airport Auto Parts, Inc. USA-MA(Leominster) Request_Quote 1-800-922-8173 Request_Insurance_Quote
    </B>371998
    Engine
    BMW 740 i119K,RAN GOOD,'4N'AL.119,000A8-25A$1000ET Cote Auto Exchange Inc. USA-MA(Leominster) Request_Quote 1-978-537-2420 Request_Insurance_Quote
    </B>371997
    Engine
    (4.4L C387,975A$AF853$1700LKQ - MA Leominster USA-MA(Leominster) E-mail 978-537-0928 / 800-343-6122371998
    Engine
    BMW 740 i(4.4L)-99,000AFS0593$949.98Five Star Auto Salvage USA-RI(Smithfield) Request_Quote 401-231-2916/401-231-1120 Request_Insurance_Quote
    </B>381996
    Engine
    BMW 740 iLnotes WA1842$CallWeber Auto and Truck Parts USA-NH(Derry) E-mail 1-603-432-2084/1-800-594-2084381998
    Engine
    BMW 740 iTESTED RAN NICE C11009$1000Murray's Auto Recycling, Inc. USA-NH(Londonderry) E-mail 1-877-586-5269391998
    Engine
    BMW 740 i4.4L RUNS GOOD BUT SMOKES VALVE COVER OR SEALS140,000ALX072$800Capital City Salvage USA-RI(Providence) Request_Quote 1-401-274-5010 / 1-866-355-2970 Request_Insurance_Quote
    </B>391998
    Engine
    (4.4L)159,790A$VH506$1100LKQ - Route 16 Used Auto USA-MA(Webster) E-mail 1-800-423-4006441998
    Engine
    BMW 740 iruns nice113,000 DH171$750General Auto Recycling USA-RI(Tiverton) Request_Quote 401-624-6687 Request_Insurance_Quote511998
    Engine
    BMW 740 i(4.4L)PARTSONLY-140K140,000A10273$CallJordan Used Auto Parts USA-CT(Preston) Request_Quote 860-887-2800 Request_Insurance_Quote
    </B>751997
    Engine
    BMW 740 iBROKEN,PARTS ONLY 0C4167$CallYale, Inc./Three Mad Men Auto USA-CT(Montville) E-mail 1-800-243-0874821998
    Engine
    BMW 740 i4.4,AOD,05/97,EFI,RWD- 8N02$1500Pandolfe's Auto Parts South, Inc. USA-CT(Berlin) Request_Quote 1-800-752-7278 Request_Insurance_Quote
    </B>1011998
    Engine
    BMW 740 i4.4,AOD,EFI,RWD 9M15$1500Pandolfe's Auto Parts South, Inc. USA-CT(Berlin) Request_Quote 1-800-752-7278 Request_Insurance_Quote
    </B>1011997
    Engine
    BMW 740 iI,RWD,8 Cyl,AT 4666$CallJ.C. Recycling, Inc. USA-CT(Meriden) E-mail 1-888-247-11991041998
    Engine
    BMW 740 iPARTS86,572A3784$CallJ.C. Recycling, Inc. USA-CT(Meriden) E-mail 1-888-247-11991041998
    Engine
    BMW 740 i4.4,AT0AAC7918$1000Chuck & Eddie Used Auto Parts USA-CT(Southington) Request_Quote 860-628-9684 Request_Insurance_Quote
    </B>1051996
    Engine
    BMW 740 iL4.4,AT195,551AAC7627$1000Chuck & Eddie Used Auto Parts USA-CT(Southington) Request_Quote 860-628-9684 Request_Insurance_Quote
    </B>1051998
    Engine
    BMW 740 iL4.4,AT214,709CAC7489$1000Chuck & Eddie Used Auto Parts USA-CT(Southington) Request_Quote 860-628-9684 Request_Insurance_Quote
    </B>1051997
    Engine
    BMW 740 i(4.4L)- IN CAR-RESTK L44198$1000Underpass Auto Parts USA-CT(Wallingford) Request_Quote 1-203-284-8562 Request_Insurance_Quote
    </B>1081998
    Engine
    BMW 740 iL6-97,RWD,EFI,4.4,AT5,122,000A8D0205$1200Terryville Auto Parts USA-CT(Terryville) E-mail 1-800-834-58901101998
    Engine
    BMW 740 i4.4 CLEAN WELL KEPT157,283A3886$995Petrillo's Used Auto Parts, Inc. USA-CT(New-Haven) Request_Quote 1-800-922-8002 Request_Insurance_Quote
    </B>1161998
    Engine
    BMW 740 iL D11161$1100Seymour Auto Wrecking USA-CT(Seymour) Request_Quote 1-800-750-2413 / 1-203-888-2527 Request_Insurance_Quote
    </B>1231998
    Engine
    BMW 740 iLRWD,4.4,AT,IL 129-08$2200Kneer's Auto Recycling USA-NY(Troy) E-mail 1-518-279-95811311997
    Engine
    BMW 740 i4.4,AT,UPPER OIL PAN BROKE227,928CP24194$CallMedford Auto Wreckers USA-NY(Medford) Request_Quote 1-631-289-1772 Request_Insurance_Quote
    </B>1441996
    Engine
    BMW 740 iL 0AP0258$1450Lake Auto Parts USA-NY(Ballston-Lake) E-mail 518-399-9797/888-399-99191461998
    Engine
    BMW 740 iCOLD COMP 125 NEEDS OIL PAN133,077A8B5109$1200Jerry Browns Auto Parts Ltd. - PRP-NE USA-NY(Queensbury) Request_Quote 1-800-543-8733 Request_Insurance_Quote
    </B>1481998
    Engine
    BMW 740 iLRAN GREAT VT 19,LB'S OLD CAR164,390A2I9937$1200Jerry Browns Auto Parts Ltd. - PRP-NE USA-NY(Queensbury) Request_Quote 1-800-543-8733 Request_Insurance_Quote
    </B>1481998
    Engine
    BMW 740 iLGOOD JOEY128,000A14809$1200Phoenix Auto Parts - ARANY USA-NY(Bay-Shore) Request_Quote 1-631-666-0630 Request_Insurance_Quote
    </B>1581997
    Engine
    BMW 740 iL11-96,4.4 BURNT LOOKER119,000A186T$CallBeacon Auto Salvage, Inc. USA-NY(Beacon) Request_Quote 1-845-838-3591 Request_Insurance_Quote
    </B>1591997
    Engine
    BMW 840 i4.4 AT DNH,SHOP SAYS GOOD-NW160,000A7974$1100Ace Auto Wreckers USA-NY(Deer-Park) Request_Quote 1-800-273-3347 Request_Insurance_Quote
    </B>1591998
    Engine
    BMW 740 i4.4 ------PARTS ONLY---------- AW0180$CallAable West USA-NY(Lindenhurst) Request_Quote 631-226-6999 Request_Insurance_Quote
    </B>1651998
    Engine
    BMW 740 i02-98152,944A080394$1250Action Auto Wreckers USA-NY(Massapequa) Request_Quote 1-800-562-8811 Request_Insurance_Quote1691997
    Engine
    BMW 740 iCORE CORE CORE$200Action Auto Wreckers USA-NY(Massapequa) Request_Quote 1-800-562-8811 Request_Insurance_Quote1691997
    Engine
    BMW 740 iL(4.4L)1AAA0725$950.11Nationwide Used Auto Parts USA-NY(Central-Valley) Request_Quote 845-827-5507/877-909-1010 Request_Insurance_Quote
    </B>1721997
    Engine
    115K,740,E38,SED115,549A$P1510$1400LKQ - Hunts Point Auto Parts USA-NY(Bronx) E-mail 1-800-221-81511791996
    Engine
    BMW 740 i Z2735$CallAllied Auto Parts USA-NY(Bronx) E-mail 1-718-542-73001801993
    Engine
    BMW 535 iT25613 CHK NUMBERS MAKE SURE FITS 047$86.86Nelson's Auto Salvage Inc USA-NY(Springfield-Gardens) Request_Quote 718-276-1234 Request_Insurance_Quote
    </B>1801998
    Engine
    BMW 740 i4.496,000A484P$1400Sambucci Bros., Inc. USA-NY(Corona) Request_Quote 1-718-651-7119 Request_Insurance_Quote
    </B>1811997
    Engine
    BMW 740 i4.4,AT,RWD0A994984$CallRoosevelt Auto Wrecking USA-NY(Corona) E-mail 888-429-9059 / 718-429-90591811997
    Engine
    BMW 740 iL4.4,AT,RWD0A994425$CallRoosevelt Auto Wrecking USA-NY(Corona) E-mail 888-429-9059 / 718-429-90591811997
    Engine
    BMW 740 iRAN DRAIVE-110000110,000A310$850M & I Auto Sales, Inc. USA-NY(Corona) E-mail 718-335-64651811998
    Engine
    BMW 740 iL5-97,4.4 RC1056$1200Roth's Auto Wrecking, Inc. USA-NY(Springfield-Gardens) E-mail 1-718-525-63001811998
    Engine
    BMW 740 iLIL,4.4,RUNS NICE,AT 004456$CallBig Apple Auto, Inc. USA-NY(Brooklyn) E-mail 1-718-495-1774186Year
    Last edited by IcemanBHE; 05-30-2011 at 05:18 PM.

  23. #23
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    Oh wow, sorry to hear this Stas

    Does sound like a crazy coincidence...

  24. #24
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    the only way that could have happend is at least one injector is stuck open and filled a cylinder with gas, the force of not being able to compress the liquid broke a rod and cracked the block. DO NOT reuse those injectors unless you want it to happen again. There is NO WAY a vacuum leak will fill the cylinder(s) up with fuel flat out. get your money back on those peicers....
    1997 BMW 740iL

  25. #25
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    Quote Originally Posted by Prospeeder View Post
    the only way that could have happend is at least one injector is stuck open and filled a cylinder with gas, the force of not being able to compress the liquid broke a rod and cracked the block. DO NOT reuse those injectors unless you want it to happen again. There is NO WAY a vacuum leak will fill the cylinder(s) up with fuel flat out. get your money back on those peicers....
    Thats pretty much what i am thinkking too.

    I am actually looking at the two engines from that list tomorrow.
    also from my understanding
    all the v8 motors from 96-98 in 740 and 540 are the same and all electronics will be the same?



    96 bmw 740il / M-pars/ bilstein shocks & Rd springs/ 750 brakes/ alpina lip / clear corners, sidemarkers and oem taillights/ ACS roof wing /M-pedals/ facelift grills and headlight bezels /Bi-Xenon/ umnitza Orion V2 angel eyes /HID low beams and fogs/ double pane windows / navigation & tv tuner / 750 all-leather black interior / floor lights/oem wood steering wheel/pornlights /wood b-pillars / wood maplight & seatbacks / window shades, black alcantra headliner/ 750 heated seats & power heated rear seat / gloss trim / lighted interior door handles/ HKS Intake / high flow cats/E60 M5 mufflers


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