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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 > Little help? When OL fueling at 100 is not enough - PWM meth



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      01-30-2012, 02:04 PM   #1
jpsimon
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Exclamation Little help? When OL fueling at 100 is not enough - PWM meth

(ignore my slow shift)

I thought I read at one point someone on here had a custom map that had changes to the fuel tables because OL Fueling at 100 wasn't enough. Am I remembering that correctly? I don't feel 100% comfortable adjusting the fuel tables myself - could someone help me out?

PWM Meth, 50/50 meth/water (boost juice) + 93 octane pump. I have OL fueling at 100, but clearly i need more.

3rd -> 4th gear, at 5900-6000+rpm in 3rd gear my fuel trims now max out. And if i was to go further in 4th gear same thing would happen (it just barely touched 34% at the end of this pull)


Last edited by jpsimon; 01-30-2012 at 02:14 PM..
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      01-30-2012, 02:24 PM   #2
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I could technically do it but I rather not be responsible. Just send it to shiv
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      01-30-2012, 02:35 PM   #3
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Don't use Boost Juice.. not enough fuel content, IMHO. If you run the suggested 75/25 meth/water mix, you will get your trims back into line and you will make a bit more power. If you need to run Boost Juice, I can tweak the fuel map for more fuel output though. But I think you'd be better off (i.e., make more power) by running a stronger meth concentration. Even at lower boost.

Shiv
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      01-30-2012, 02:42 PM   #4
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Quote:
Originally Posted by shiv@vishnu View Post
Don't use Boost Juice.. not enough fuel content, IMHO. If you run the suggested 75/25 meth/water mix, you will get your trims back into line and you will make a bit more power. If you need to run Boost Juice, I can tweak the fuel map for more fuel output though. But I think you'd be better off (i.e., make more power) by running a stronger meth concentration. Even at lower boost.

Shiv
My issue is I have no good way to store 5gal drum of pure meth at the place I just moved to. Boost Juice is the easiest solution for me but I'm actually going to pick up some HEET after work today and dump that in. I'll see if that helps out with the trims before getting the adjusted map from you. thanks!

/edit/ i'll probably just end up getting some pure meth after i'm out of boost juice then mix/put it into smaller gas containers... i can get away with that

Last edited by jpsimon; 01-30-2012 at 03:03 PM..
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      01-30-2012, 02:49 PM   #5
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It wouldn't hurt to alter the table slightly in my opinion... the latest maps are constant values from low to high boost, so just adding some stepping would be a good, easy start. Its easy once you do it a couple times.
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