[SS e93]

Still trying to diagnose what is wrong with my car. Only fault code I am getting is P2AAF - fuel pump plausability. Never had this code until these problems started, but no other codes are being thrown.

Car feels sluggish under 2500rpm, when it used to be totally fine going mid-WOT even at low rpm 3-4th gear. Rarely get misfires but I sometimes feel it, haven't thrown codes. Did all spark plugs and 2 coils I had misfires on about 12k miles ago. Did carbon cleaning about 8k ago when misfires returned. Everything was totally fine after that. Gas mileage has decreased a good amount, 23mpg down to about 19 or 20mpg now. I used to get close to 300 miles per tank comfortably, now I feel lucky to get 250 or so.

I do not see any white smoke, but I possibly smell the hint of gas at startup. I have stalled and almost stalled a few times getting out of a parking spot on cold starts.

This is my most recent datalog.

http://www.datazap.me/u/cfigs/10-27-...8&zoom=118-187

[volcom8190]

Originally Posted by icyhot e92

Still trying to diagnose what is wrong with my car. Only fault code I am getting is P2AAF - fuel pump plausability. Never had this code until these problems started, but no other codes are being thrown.

Car feels sluggish under 2500rpm, when it used to be totally fine going mid-WOT even at low rpm 3-4th gear. Rarely get misfires but I sometimes feel it, haven't thrown codes. Did all spark plugs and 2 coils I had misfires on about 12k miles ago. Did carbon cleaning about 8k ago when misfires returned. Everything was totally fine after that. Gas mileage has decreased a good amount, 23mpg down to about 19 or 20mpg now. I used to get close to 300 miles per tank comfortably, now I feel lucky to get 250 or so.

I do not see any white smoke, but I possibly smell the hint of gas at startup. I have stalled and almost stalled a few times getting out of a parking spot on cold starts.

This is my most recent datalog.

http://www.datazap.me/u/cfigs/10-27-...8&zoom=118-187

can you log lpfp and hpfp? sounds like a dying HPFP or bad injectors.

[SS e93]

Originally Posted by volcom8190

can you log lpfp and hpfp? sounds like a dying HPFP or bad injectors.

Here are a couple of logs I had with lpfp/hpfp.

http://www.datazap.me/u/cfigs/cobb-s...17-18-19-20-21

http://www.datazap.me/u/cfigs/cobb-s...=2-17-18-19-20

http://www.datazap.me/u/cfigs/cobb-s...=2-17-18-19-20

Thanks

[shawntech]

Originally Posted by Jeffman

Check your vacuum tubing. I had the same problem. Smoke testing found my failed vacuum line at the brake booster. Check this out http://www.e90post.com/forums/showthread.php?t=988667

sorry but your thread made no sense then nor does it now, also everything except for the BPVs runs off the vacuum pump.

[SS e93]

Originally Posted by Jeffman

Check your vacuum tubing. I had the same problem. Smoke testing found my failed vacuum line at the brake booster. Check this out http://www.e90post.com/forums/showthread.php?t=988667

Forgot to add. I went to the dealer to see if it was my turbos/wastegates for a warranty replacement. According to them, they did a smoketest. I am also hitting target boost according to Cobb logs. I seem to just have a longer delay than usual hitting boost. The rattle is within normal limits, and since they couldn't figure out what I was complaining about, I ended up not having to pay any diagnostic fees luckily. I am at 73k so I guess I could just replace all my vacuum lines anyway, and go from there. When I have time I am going to pull my plugs to see if any are fouled. I just don't want to be chasing a problem by basically blindly replacing something hoping it fixes it.

[Jnat]

Originally Posted by 135Pats

Thanks for chiming in, that's more or less how I felt about the log. Pretty awesome what it does for timing corrections, wow. Actually, I'm probably running more like E35 right now, I filled a bit on the generous side (figure better to run a little tight on trim than run too aggressive a map w/o sufficient octane). I'll get E30 on the nose next time I fill and see if that does anything. At this point it looks like the Walbro options are pretty tried and true, so unless there are huge cost issues that I don't know of, that will be the route I take from here. Meth just scares me as a fueling solution, gotta be honest.

I agree. Meth is obviously great, mine is a DD so I just don't see meth as being a solution for a daily, maybe I'm wrong.

[Jnat]

All the throttle closure talk with Cobb is with traction control on or off?

[bplant13]

Originally Posted by Jonny954

Well...I don't know how to do that... lol
Any other suggestions?

Did you ever solve this mystery? I have the same thing, coincidently it happened after I removed my dp fix and reinstalled cobb stage 2. I ran stage 2 up until last week, until I needed to pass emissions, and never had a problem while on stage 2 or stock with the dp fix. Only now that I'm back on stage 2, as soon as I took the dp fix out. I'm only getting the 2nd cat code.

[NJ335 XI]

Has anyone tweaked their cobb files especially for the Aggressive Stage 1 with FMIC? If so is there anyway I can try it and see what difference it makes on my car? Appreciate it.

[Abacus38]

Is it normal to have 3-5 degree of post shift timing corrections?

Logs posted --- >http://www.datazap.me/u/abacus38/200...b-e30-race-map

[Jeffman]

Yes. But a lot of tuners taper off the load above 5500 rpm or so to avoid this.

[Jnat]

Originally Posted by Jeffman

Yes. But a lot of tuners taper off the load above 5500 rpm or so to avoid this.

Yes

[hellokitty]

Just installed Stage 1 Sport Map on my 335is and ran this log from gears 1-3 at WOT.

Can anyone please tell me if things are normal or is there anything wrong? Thanks.

http://www.datazap.me/u/moss/1-3-201...15-16-17-18-19

I'm a little concerned with the timing correction in Cyl 4-6 toward the end of my run but it looks like it is caused my the boost spikes when I'm shifting. Any way to correct this?

[abdullahb]

So who wud care to share a cobb n54 fbo meth tune...and i dont want lulz_m3's map...share ur ideas .... We got atr...why pay for tunes....oh and using e85/e30/e70/e60...all ethanol is not possible here in my country! So share!!!

[CarAbuser]

Originally Posted by abdullahb

So who wud care to share a cobb n54 fbo meth tune...and i dont want lulz_m3's map...share ur ideas .... We got atr...why pay for tunes....oh and using e85/e30/e70/e60...all ethanol is not possible here in my country! So share!!!

If you just take a map customised on another car you will likely end up with problems. The whole point of a pro tune is to reactively adjust parameters depending on how your car behaves.

So you can either read around the forums and gain enough knowledge on tuning to tweak your own map or pay for a pro tune.

[abdullahb]

I can take a customised map and finalize it myself....but to start from an off the shelf map...now dont get me wrong...im pulling on a clk63 blackseries with long tube headers exhaust tune and intakes...and im pulling an e60 m5... The car is no joke....

[BQTuning]

Originally Posted by abdullahb

I can take a customised map and finalize it myself....but to start from an off the shelf map...now dont get me wrong...im pulling on a clk63 blackseries with long tube headers exhaust tune and intakes...and im pulling an e60 m5... The car is no joke....

Sometimes it works, most of the time it doesnt, and it may require additional PID adjustments if you know how to use the PIDs. The worse thing to do is compensate the corrections using wgdc which will deteriorate mid-upper power

[abdullahb]

Money is not the issue...its just that cobb is much more expensive than jb4 and jb4 is muchhh more supportive!

[Chris E93 335i]

How come my cobb dose not feel as fast ? the car runs smooth no issues

2009 E93 335i N54 34K miles W/NGK plugs just recently installed

Running Stage 1 aggressive IJE0S ID :confused

help

[ashmostro]

"Does not feel as fast" as what? Your question is impossible to answer as currently phrased.

[skim7x]

Originally Posted by Chris E93 335i

How come my cobb dose not feel as fast ? the car runs smooth no issues

2009 E93 335i N54 34K miles W/NGK plugs just recently installed

Running Stage 1 aggressive IJE0S ID :confused

help

Your COBB does not feel as fast as...........? ... a civic? ... a stock 335? ... a La Ferrari?

I'd have to say it's probably because #1 you're running the lowest Stage possible #2 it's an OTS map... are you sure you installed it correctly?

[ashmostro]

Originally Posted by skim7x

Your COBB does not feel as fast as...........? ... a civic? ... a stock 335? ... a La Ferrari?

...a FISH!