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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 backend PUMP flash ok with 30% E85??



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      07-18-2014, 03:06 PM   #1
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BMS backend PUMP flash ok with 30% E85??

I have the following mods, and i just did the PUMP FBO back end flash (the one on N54tech) and was wondering if I should be running on Map5 auto tune, on the daily or running Map2 for higher boost?

Also, is it safe to run 3-4 gallons with 6-7 gallons of 93 on auto tune mode with that back end pump gas flash on auto tune Map5?

Looking for the best results at track and on dyno that i plan on doing this coming week.

Mods are:

JB4 w/ back end pump flash
Dual cone intakes
VRSF 3 inch downpipes
CW 2.5 inch full exhaust
ETS 5 inch FMIC, w/ lower charge pipe
VRSF charge pipe w/tial blow off valve
Stock fuel pump etc..
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      07-18-2014, 03:33 PM   #2
Myrder
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http://www.intercepteft.com/calc.html

on stock pump you are limited anywhere from E25-E40 depends on the car. Use the link above because your mix ratio could yield E40 if you did 4-6. You also need to measure out your E85 to see if it is actually E85, could be E80.

Anyway i would start with an E30 mix and do some logs and look at your LPFP and HPFP to see if they are struggling.
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      07-18-2014, 04:09 PM   #3
Mike@N54Tuning.com
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You can run E30 on the pump map. You'll make more power than without the E85 but not as much a if you had a higher advance map loaded.

Mike
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      07-18-2014, 07:59 PM   #4
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
You can run E30 on the pump map. You'll make more power than without the E85 but not as much a if you had a higher advance map loaded.

Mike
Thanks Mike, I think i will do 3 gallons of e85 w/ 7 gallons of 93. Should i run on map 2 or map 5?

Also can i run the pump back end with map 7 and straight 109 unleaded? Just want my options as i will be running it at the track next weekend!

Thanks
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