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Old 06-12-2013, 01:40 PM   #26
sc00ter
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Look at rows 881-886 and 1460-1472. When you are WOT you are building boost all the way to 23.81psi which is WAY too high for the TD04. Especially on a stock/stage 1 map.

The good news is the only knock I'm seeing is under low load, which is fairly normal.

If I were you I'd get the car into a reputable tuner/shop ASAP. Let them take a deeper inspection and possibly fix up that tune.
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Old 06-12-2013, 01:56 PM   #27
BeardedShogun
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Quote:
Originally Posted by sc00ter View Post
Look at rows 881-886 and 1460-1472. When you are WOT you are building boost all the way to 23.81psi which is WAY too high for the TD04. Especially on a stock/stage 1 map.

The good news is the only knock I'm seeing is under low load, which is fairly normal.

If I were you I'd get the car into a reputable tuner/shop ASAP. Let them take a deeper inspection and possibly fix up that tune.
Will do.

Thanks.
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Old 06-12-2013, 04:36 PM   #28
sc00ter
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On second thought, the first thing I'd do is go get a compression/leakdown test to make sure it's not a broken motor causing the issue. If that checks out then I'd go have a tuner dig in and re-tune.
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Old 06-12-2013, 06:17 PM   #29
BeardedShogun
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I've already scheduled one with a buddy of mine

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Old 06-12-2013, 08:05 PM   #30
SpecBlitzed
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Limp noddle mode
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Old 06-14-2013, 05:12 PM   #31
BeardedShogun
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Quick update.

Flashed back to stock and removed the Cobb sf, in hopes of having the car return to normal and try diagnosing the problem that way, so the car went back to stock.
Couple days driving normal like that not only am I still getting hesitation but also I start flashing a CEL, AP tells me its code; p0171 "system too lean"

even more frustrated.
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Old 06-17-2013, 12:33 PM   #32
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Limp noddle mode
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Old 06-17-2013, 01:01 PM   #33
ResidentR
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I think something is up with your boost control. Looking at the logs you posted, you were seeing boost pressures significantly higher than they should have been, which can cause the p0171 since your ECU isn't tuned for it. I would make sure that all the vacuum lines for the wastegate and boost control solenoid are all intact and in place, and it might be helpful to get a boost gauge if you don't already have one.

If you don't see anything under the hood that looks suspicious to you, I'd definitely recommend taking it to someone else for a look.
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Old 06-17-2013, 01:06 PM   #34
dstroy
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So, you googled p0171 and went down the checklist of things that cause that? Dirty maf, faulty o2 sensor etc. the Cobb sf uses an oiled filter, my bet is that you used too much oil or didnt ever clean/oil your air filter or maf. Try cleaning your maf with CRC maf cleaner, ONLY use a cleaner that is specifically for cleaning maf sensor.

EDIT: I missed the part where you already cleaned the maf but you still might have cooked it with oil.

Last edited by dstroy; 06-17-2013 at 01:15 PM.
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