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Thread: E36 Hater's Phase 3, AKA what's a budget build?

  1. #51
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    I'm actually surprised it wasn't higher than that. I remember seeing the aeromotive booth at the PRI show a few years ago and they had a cutaway gas tank with an A1000 running inside of it and returning through a regulator. I don't know what fluid they were running but the tank was too hot to hold your hand on.


    86 325es, 2.8L m50, S472sxe, MS3pro Ultimate, e85, solid rear axle, 4 link, spool, TH400 trans, Protorque converter, 28x10.5w slicks, zip ties
    Best = 9.43 @ 149.15 mph, 1.30 60 foot 28 psi boost

  2. #52
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    I notice a difference if i fill up with fresh cold fuel, i would be curious what my temps are..

    When you were at mpact how much fuel were you carrying?
    1989 535i - sold
    1999 Tiag/Dove M3 - sold
    1998 Turbo Arctic/black - current
    2004 TiAg/Black - Current

    PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53

  3. #53
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    Quote Originally Posted by vollosso View Post
    When you were at mpact how much fuel were you carrying?
    I always run a full tank to keep the pumps happy (and a full trim car complete with a spare )

    Frank - Any chassis upgrades?

    98 Fern Green M3/2 - Precision 6870/AR Designs Twin Scroll/RK/E85
    2017 Toyota Tundra Crewmaxx - Family Whip
    2011 Pierce 75' Quint - Fire Apparatus West Islip FD

  4. #54
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    Quote Originally Posted by NY98M3 View Post
    2 pumps make alot of heat...At Mpact, I saw E85 temps in the 120F's Thats 2 - 485 Walbros hung on the RR hanger
    I just installed a 485+340lph in my tank...I shoulda logged fuel temps beforehand but I will log fuel temps under DD conditions. Praying sxit don't get too hot lol

  5. #55
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    Quote Originally Posted by NY98M3 View Post
    2 pumps make alot of heat...At Mpact, I saw E85 temps in the 120F's

    Thats 2 - 485 Walbros hung on the RR hanger
    Do you have both pumps running all the time or staged?


    -sold...replaced by turbo e36

  6. #56
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    Quote Originally Posted by NY98M3 View Post
    2 pumps make alot of heat...At Mpact, I saw E85 temps in the 120F's

    Thats 2 - 485 Walbros hung on the RR hanger
    Yes two pumps running makes a TON of heat. Exactly the reason why I'm trying to stay away from that all.

    My friends turbo NSX, we built a fuel system for it. Walbro 255 in OE tank feeding a surge tank w/ 2x 044's.

    At first we had both on at the same time, the surge tank fuel got so hot in a matter of minutes of just the car running at idle it got to the point after 15-20 min that you could barely hold your hand on the surge tank (aluminum) and as time went on the lines from the tank to the fuel rails and the rails themselves started to get hot.

    Once we staged the pumps, the difference was truly amazing. One pump running and the surge tank would take a long time to warm up, and then it would be just that warm never hot.

    E36 DYNO TUNING WIRING PARTS

  7. #57
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    Quote Originally Posted by Boostedm333 View Post
    Ohh ok. Yae mann I was considering stock fuel lines after seeing your dyno chart making 717whp with stock fuel lines. where's my goal is 700whp on e85. But as notorious vr said your set up was a 2.5 which gave you a over head. where's mines is a 3.2.

    Sent from my SAMSUNG-SGH-I537 using Tapatalk
    Can someone enlighten me why smaller displacement uses less fuel to make the same power as a larger displacement engine. I'm missing something here since I've never done the calls myself. I'd have to imagine the boost pressure on a smaller displacement would have to be greater to make the same power as a larger displacement and therefore you need a higher rail fuel pressure and therefore less fuel pump output. Is a function of chamber volume equated in here that results in less fuel required that I am missing?

    Sent from my SM-G935V using Tapatalk

  8. #58
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    My 0.02 on running a second fuel pump. Just have it kick on based on boost pressure if running stock ecu

    Sent from my SM-G935V using Tapatalk

  9. #59
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    I wonder what the triple Walbro supra guys are doing....and what their fuel temps look like

    *Heads off to search supraforums* :p

  10. #60
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    Run a fuel cooler/chiller

    Sent from my SM-G935V using Tapatalk

  11. #61
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    Quote Originally Posted by cragg56 View Post
    My 0.02 on running a second fuel pump. Just have it kick on based on boost pressure if running stock ecu

    Sent from my SM-G935V using Tapatalk
    Thats what I do with my set up. The second pump kicks on with a hobbs switch at about 6 psi.


    -sold...replaced by turbo e36

  12. #62
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    I have mine so it turn on at 40% throttle and stays on for an additional 10 seconds when throttle goes below 40%.


    86 325es, 2.8L m50, S472sxe, MS3pro Ultimate, e85, solid rear axle, 4 link, spool, TH400 trans, Protorque converter, 28x10.5w slicks, zip ties
    Best = 9.43 @ 149.15 mph, 1.30 60 foot 28 psi boost

  13. #63
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    Quote Originally Posted by cragg56 View Post
    Can someone enlighten me why smaller displacement uses less fuel to make the same power as a larger displacement engine. I'm missing something here since I've never done the calls myself. I'd have to imagine the boost pressure on a smaller displacement would have to be greater to make the same power as a larger displacement and therefore you need a higher rail fuel pressure and therefore less fuel pump output. Is a function of chamber volume equated in here that results in less fuel required that I am missing?

    Sent from my SM-G935V using Tapatalk
    Simply put, bigger engines require more fuel.

    boost matters, but a 2.5L engine will need less fuel then a 3.2L engine at the same boost level.

    E36 DYNO TUNING WIRING PARTS

  14. #64
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    Quote Originally Posted by NOTORIOUS VR View Post
    Simply put, bigger engines require more fuel.

    boost matters, but a 2.5L engine will need less fuel then a 3.2L engine at the same boost level.
    I agree at the same boost a 2.5L needs less fuel. But he was definitely running more boost than would've been required on a 3.2l to make 700whp. So I'm trying to figure out why at a higher boost pressure he was still requiring less fuel and his one fuel pump kept up where you're saying larger displacement engines ran out of pump

    Sent from my SM-G935V using Tapatalk

  15. #65
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    I think the component you are missing here is rpm

    What rpm did make 700? A turbo car can use 5+% less fuel at 7000 vs 6000..

    Did he make 700@ 7800 or 700@6800??
    Last edited by vollosso; 04-12-2016 at 06:05 PM.
    1989 535i - sold
    1999 Tiag/Dove M3 - sold
    1998 Turbo Arctic/black - current
    2004 TiAg/Black - Current

    PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53

  16. #66
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    I can't see why 700 whp on a 3.2 would need more fuel than 700 whp on a 2.5 assuming both the 2.5 and 3.2 are tuned to the same AFR and timing is at MBT for both. (higher boost and rpm of course required to make same power on the 2.5). Basically that would be saying that BSFC inherently increases with displacement.


    86 325es, 2.8L m50, S472sxe, MS3pro Ultimate, e85, solid rear axle, 4 link, spool, TH400 trans, Protorque converter, 28x10.5w slicks, zip ties
    Best = 9.43 @ 149.15 mph, 1.30 60 foot 28 psi boost

  17. #67
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    Quote Originally Posted by someguy2800 View Post
    I can't see why 700 whp on a 3.2 would need more fuel than 700 whp on a 2.5 assuming both the 2.5 and 3.2 are tuned to the same AFR and timing is at MBT for both. (higher boost and rpm of course required to make same power on the 2.5). Basically that would be saying that BSFC inherently increases with displacement.
    That's where my head was. So I was assuming I was missing something. Hopefully someone can chime in

    Sent from my SM-G935V using Tapatalk

  18. #68
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    717whp at 7600rpm at 26.5psi


    Small part of my order came in, awaiting the call from the machine shop on the block.


  19. #69
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    Vibrant 3.5 or 4"?

    I have a vibrant 3.5" res and muffler and it sounds sick.
    1989 535i - sold
    1999 Tiag/Dove M3 - sold
    1998 Turbo Arctic/black - current
    2004 TiAg/Black - Current

    PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53

  20. #70
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    Quote Originally Posted by someguy2800 View Post
    I can't see why 700 whp on a 3.2 would need more fuel than 700 whp on a 2.5 assuming both the 2.5 and 3.2 are tuned to the same AFR and timing is at MBT for both. (higher boost and rpm of course required to make same power on the 2.5). Basically that would be saying that BSFC inherently increases with displacement.
    This. Hp is hp. The fuel system doesn't care what size the motor is. Only how much hp at X boost it has.

    "Believe nothing you hear, half of what you read"


  21. #71
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    Quote Originally Posted by vollosso View Post
    Vibrant 3.5 or 4"?

    I have a vibrant 3.5" res and muffler and it sounds sick.
    4inch race muffler and 4 inch tpv muffler, I want a nice sound with a little rasp and a deep tone.

  22. #72
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    Quote Originally Posted by E36 HateR View Post
    4inch race muffler and 4 inch tpv muffler, I want a nice sound with a little rasp and a deep tone.
    Deep you say?

    1989 535i - sold
    1999 Tiag/Dove M3 - sold
    1998 Turbo Arctic/black - current
    2004 TiAg/Black - Current

    PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53

  23. #73
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    Quote Originally Posted by Fender13Bender View Post
    This. Hp is hp. The fuel system doesn't care what size the motor is. Only how much hp at X boost it has.
    Rpm is also a factor
    1989 535i - sold
    1999 Tiag/Dove M3 - sold
    1998 Turbo Arctic/black - current
    2004 TiAg/Black - Current

    PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53

  24. #74
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    Quote Originally Posted by someguy2800 View Post
    I can't see why 700 whp on a 3.2 would need more fuel than 700 whp on a 2.5 assuming both the 2.5 and 3.2 are tuned to the same AFR and timing is at MBT for both. (higher boost and rpm of course required to make same power on the 2.5). Basically that would be saying that BSFC inherently increases with displacement.
    if you have larger cylinders (ie. more displacement) you are consuming more air per cylinder.. if you're using more air, you need more fuel to reach your target AFR.

    Remember you are adding fuel to the air mass, not the other way around.

    E36 DYNO TUNING WIRING PARTS

  25. #75
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    Quote Originally Posted by cragg56 View Post
    That's where my head was. So I was assuming I was missing something. Hopefully someone can chime in

    Sent from my SM-G935V using Tapatalk
    Yae I know that's questionable. there's only one way to fine out. Am going to try the single walbro 485 and see what happens. Shit i mite even use stock fuel lines. Goals is 700whp. If it don't support it I'll just upgrade.

    Sent from my SAMSUNG-SGH-I537 using Tapatalk

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