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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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Originally Posted by phazen23 View Post
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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Originally Posted by woptang22 View Post
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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Originally Posted by phazen23 View Post
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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Originally Posted by woptang22 View Post
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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Originally Posted by phazen23 View Post
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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