Stock M20 with o-ring block, ARP headstuds
93 OCT
Ebay OBX manifold adapter
AGP/BW 256 turbo running 1 bar
44mm TIAL wastegate
2.5" piping/3" exhaust
This is mostly street tuned. I have not tuned it on a dyno or try to get too aggressive....I also find that the M20 loves to be just a tad bit rich....13 to 14 AFRs for nice transition/cruising. Around 15.5, the car feels like it is too lean, stutters a bit, slight bucking
When I get some more time, I plan to add another row down at the bottom of my VE map and make my % values the similiar on both the VE and Ignition mapsAttachment 530061VE table.jpgSpark table.jpg
Last edited by BMWManiac; 04-06-2015 at 09:46 PM.
1997 Arctic Silver/Black M3
CES Stage IV (651rwhp/615rwtq @ 24 psi)
1999 Techno Violet/Dove M3
Auto/Convertible and staying stock!
I posted in my dyno thread but got no responses, so I'll try it here. I'm just seeking some weigh-in on the timing numbers prior to actually testing on the dyno which will be a while off from now.
The tuner dyno'd my car with 98RON in the tank and bumped up the timing a bit around the 180-200kpa range. On E85, I understand you can run a few more degrees safely in the upper RPM regions and on boost.
So, keeping things as smooth as practical, I've added some more timing to it, but just a couple of degrees overall.
How does that look for an M50TUB28 with 8.5:1 on 107RON E85?
Thanks
Pete
E85IGN1.JPGE85IGN2.JPG
1989 E30 - M50B28 Turbo - ZF 8 Speed
Nutzy:
I see that you've set big premature ignition even at low speeds.
That's the maximum you can take your pre-ignition engine?
Last edited by Paty; 10-04-2015 at 03:18 AM. Reason: error
Any Alpha N Stock M50 Ignition Table´s here?
My Table but i dont have a Knock Tool so is there any Stock M50 Ignition Table?
Ignition timing.PNG (66.2 KB)
I wanted to give something to compare to, I tired to convert load values to KPA. This is an estimation of kpa it really is not perfect, especially down low (<125kpa)
6465 19psi boost, 3.5" exhaust, tubular manifold, MS41 factory ecu, s52 cutring spacer
Last edited by vollosso; 01-21-2016 at 10:20 PM.
1989 535i - sold
1999 M3 Tiag/Dove - sold
1998 M3 Turbo Arctic/black - current
2004 Built motor TiAg/Black - Sold
2008 E61 19T Turbo-Wagon - current
2011 E82 135i - S85 Swap - current
1998 M3 Cosmos S54 swapped Sedan - current
1998 Turbo: 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
What fuel and compression? Seems really conservative either way.
Last edited by vollosso; 12-01-2015 at 02:07 PM.
1989 535i - sold
1999 M3 Tiag/Dove - sold
1998 M3 Turbo Arctic/black - current
2004 Built motor TiAg/Black - Sold
2008 E61 19T Turbo-Wagon - current
2011 E82 135i - S85 Swap - current
1998 M3 Cosmos S54 swapped Sedan - current
1998 Turbo: 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
Last edited by someguy2800; 06-17-2016 at 01:56 PM.
Are there any ignition tables for m50b25 non vanos high compression but without turbo?
thanks
Hello. Could you send me a stock spark ignition timing map of the M50B25 engine which does not have the Vanos unit? Thanks in advance.
Hi!
can someone help me? I have turbo m52b28 and i need ignition and VE maps
part list:
holset hx35
870cc siemens deka
kdfi v1.4
gas 98
That looks like a decent start
Thanks, good to hear. I only missing one intake pipe from being boosted.That looks like a decent start
Here is my build thread for anyone who what do something similiar.
https://www.bimmerforums.com/forum/s...M52-Low-Budget
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