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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > bms 100% e85 no meth = :(



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      06-19-2013, 11:16 PM   #23
Wedge1967
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
Without meth you are a bit limited in what you can do. 60-70% E85 is normally suggested instead of 100% E85 for those looking for a max effort as its enough to max out the system and keeps some stress off the fuel system. If you happen to have meth then you'll pickup some addl power from the lower intake temperatures and less IAT based timing reduction. Since you are a manual trans using no lift shift things are a bit different as well compared to say an automatic trans with regard to timing post shift. Overall your map 7 logs using E60+ look fine to me. If you really want more power you're going to need larger turbos.

In terms of what the N54 is capable of stock turbos I think 460rw is really the upper limit. You might be able to run 16.5degrees of advance on a single gear dyno but as soon the transmission shifts the DME is going to drop that down significantly. I'd love to see someone with a log holding 16.5 degrees of advance post shift just to know if its even possible.

Mike
Very true Mike. Post shift is not possible, but post shift 8 to 10 and then climbs back to 16 is. As much as we would like to see bigger numbers from stock turbos, even 460 whp is 100 dc on your little turbos. The only way to get more power, like you said, is to upgrade...
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      06-20-2013, 08:53 AM   #24
FRMTL2_335i
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Well, im already saving up, I can get twin gt25s installed for $2200, I have a good friend that makes sick manifolds so that won't be an issue. So I'll prob get it done over the winter.
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07 e92 jb4 g5, RBs, WEDGE E50 FLASH, BMS DCI, vrsf 3" DPS, CP-E catback, AA CP AND BOV, VRSF 7" FMIC, WALBRO 455, RB PCV, n20 tmap sensor, 100% meth through bms 2.2 kit with dual nozzles!,
12.3 @ 117mph (2.3 60' lol)
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      06-20-2013, 10:02 AM   #25
SouthfloridaE92
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Originally Posted by FRMTL2_335i
Well, im already saving up, I can get twin gt25s installed for $2200, I have a good friend that makes sick manifolds so that won't be an issue. So I'll prob get it done over the winter.
😳 please tell more! I'm interested.
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      06-21-2013, 09:44 AM   #26
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Well my friend is selling me his unused turbos for half price n the labor is $1200. Lol
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07 e92 jb4 g5, RBs, WEDGE E50 FLASH, BMS DCI, vrsf 3" DPS, CP-E catback, AA CP AND BOV, VRSF 7" FMIC, WALBRO 455, RB PCV, n20 tmap sensor, 100% meth through bms 2.2 kit with dual nozzles!,
12.3 @ 117mph (2.3 60' lol)
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