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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 > Can someone take a look at these logs?



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      05-10-2012, 05:04 AM   #23
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Originally Posted by enrita View Post
timing not being pull on cylinder 1 does not mean all cylinders are happy. Cyl 1 is normally the happiest of them all.
I would log always 1-2-5 at least. Best is all of them.
I believe I used the COBB default setting for logs. And I believe it was timing correction that I logged. SHould I try another log with timing on all cylinders? But as far as what you see, does it seem to be ok? Or not enough info provided to make a decent accessment?
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      05-10-2012, 01:30 PM   #24
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Updated with accel. pedal position and timing results.

Confirmed, you let off the pedal, which is what closed the throttle partially.

Also confirmed no timing pulls on 1 2 or 5 on this chart. I charted 3 4 and 6 as well (pic not provided) and they didn't have any timing pulls either.
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      05-10-2012, 03:24 PM   #25
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Updated with accel. pedal position and timing results.

Confirmed, you let off the pedal, which is what closed the throttle partially.

Also confirmed no timing pulls on 1 2 or 5 on this chart. I charted 3 4 and 6 as well (pic not provided) and they didn't have any timing pulls either.
Cool, thank you very much. So I guess my car is running pretty good then? It seems like it anyway from what youve said. Well Im happy about that. Hopefully nothing to worry about for a while lol
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      05-10-2012, 03:33 PM   #26
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Cool, thank you very much. So I guess my car is running pretty good then? It seems like it anyway from what youve said. Well Im happy about that. Hopefully nothing to worry about for a while lol
That run certainly looks pretty decent. I'd still recommend doing a 3rd->4th gear logged run just to be sure (even if you can't take 4th all the way to redline).
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      05-10-2012, 05:25 PM   #27
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That run certainly looks pretty decent. I'd still recommend doing a 3rd->4th gear logged run just to be sure (even if you can't take 4th all the way to redline).
So I should do a log of third gear switching into fourth gear? What would that show that just a third gear run wouldnt show?
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      05-10-2012, 05:45 PM   #28
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So I should do a log of third gear switching into fourth gear? What would that show that just a third gear run wouldnt show?
Correct. I'm afraid I don't know the answer to your question, it's just what I've read. My guess is that a single gear (especially a lower one) doesn't put a high load on the engine for very long. getting 2 upper gears worth probably presents more opportunity for a timing correction or some other issue. I'm sure some useful information can be gathered from the gear change itself as well
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      05-10-2012, 06:29 PM   #29
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Correct. I'm afraid I don't know the answer to your question, it's just what I've read. My guess is that a single gear (especially a lower one) doesn't put a high load on the engine for very long. getting 2 upper gears worth probably presents more opportunity for a timing correction or some other issue. I'm sure some useful information can be gathered from the gear change itself as well
Ill Have to give it a try and see if I can find somewhere safe to actually use 4fourth gear at those speeds safely. I have I95 right around the corner but it always has a lot of traffic. But Ill give it a try. Thank you for all your help.
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      05-10-2012, 06:58 PM   #30
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Ill Have to give it a try and see if I can find somewhere safe to actually use 4fourth gear at those speeds safely. I have I95 right around the corner but it always has a lot of traffic. But Ill give it a try. Thank you for all your help.
Not a problem. Do 2nd->3rd if you can't do 3rd->4th safely.
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