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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 > 29F1 Half Engine Light



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      09-16-2013, 10:20 PM   #1
BD_F22
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29F1 Half Engine Light

Got a half engine reduced power light..

Fault Code:

29F1 Fuel pressure, plausability

im guessing HPFP?

Edit: I used e85 for the first time last week could it be related?

Last edited by BD_F22; 09-16-2013 at 11:11 PM..
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      09-16-2013, 10:55 PM   #2
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can you clear it?
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      09-16-2013, 11:00 PM   #3
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Quote:
Originally Posted by AK 335i View Post
can you clear it?
I got it this morning and was able to clear it and continue driving to work and then drove from work to my girlfriends no problem, and now after i left her house it popped up again.. I was able to hook up my laptop and got

29F1 Fuel pressure, plausability

Edit: I used e85 for the first time last week, i put in 2.5 gallons and the rest 93
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      09-16-2013, 11:40 PM   #4
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did it pop up under normal driving or spirited driving ?

what tune?

are you running just 93oct now?
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      09-16-2013, 11:45 PM   #5
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Quote:
Originally Posted by AK 335i View Post
did it pop up under normal driving or spirited driving ?

what tune?

are you running just 93oct now?
In the morning it was spirited driving getting on the highway and tonight it was normal city driving at like 20mph.. tune is jb4 and i had about 1/4 of a tank of 93/e85 mix left and then topped off with over 10 gallons of 93 tonight so if theres any e85 left i doubt its enough to make a difference
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      09-16-2013, 11:50 PM   #6
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hrmmmm. well if you could do a log of 3rd at least partly into 4th gear (showing the shift) at WOT and send the graph and CSV to me I can Prob lèt u know what the gig is.

let the car warm up, clear any codes then do like two pulls from like 40-100? if you can on your choice map. either 2 or 5 I'm assuming. log em and send em to me. lakesbaseball16@aol.com
or just email terry@bms
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      09-16-2013, 11:53 PM   #7
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Quote:
Originally Posted by AK 335i View Post
hrmmmm. well if you could do a log of 3rd at least partly into 4th gear (showing the shift) at WOT and send the graph and CSV to me I can Prob lèt u know what the gig is.

let the car warm up, clear any codes then do like two pulls from like 40-100? if you can on your choice map. either 2 or 5 I'm assuming. log em and send em to me. lakesbaseball16@aol.com
or just email terry@bms
I would appreciate it, i will be able to log tomorrow early afternoon and will get that over to you.. Thanks
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      09-16-2013, 11:55 PM   #8
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no problemo. send me a pm to let me kno u sent logs to my email. I'm in Alaska at work so it may take a bit to get to the office to check em. but worst case tomorrow evening I'll be at computer
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