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      01-25-2013, 11:13 AM   #11
tcw
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Drives: 2008 335i
Join Date: Jan 2012
Location: Atlanta, GA

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Quote:
Originally Posted by Joshboody View Post
Looks like both trims/AFR were logged and matching well. This seems to be a fuel pump issue. I don't remember the logging options in procede for fuel pressure, but you can use BT tool to see if you are short of target.

I believe HPFP would be more likely to throw a code... LPFP can easily be short of target without throwing a code. So if you wanted to "try" something, LPFP would be my guess.
Quote:
Originally Posted by themyst View Post
He can log fuel pressure to confirm. If voltage is between 4.0 and 4.3 its operating normally.

Like he said he did not have any issues with the JB4. this is tune related.
Quote:
Originally Posted by Jeller View Post
Debug Byte 4 (LPFP voltage output) You can check on this one too, see if its dropping below 2V.

Thanks for the input guys, I will try this when I leave school today. Called (voicemail) and emailed vishnu again so hopefully they will have some good information too.
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2008 335I E92, AW, VFF700, 18" Forgestar F14, M3 front/side, M-tech rear, AMS IC, H&R Touring Cup Kit suspension, HID AE, ER Charge Pipe & Synapse BOV, CIC Retrofit, Quafie, DSS, Defiv Lockdown, SPEC 2+/Steel SMFW, Walbro 450