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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 > Procede Log Using DataZap



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      10-01-2013, 09:11 PM   #1
pits200
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Procede Log Using DataZap

Need some help reading my log, car seems to run strong, I'm fbo in this log running e85 and meth just for safety sake. Boost set point is what I'm trying to hit but the car doesn't seem to be hitting it. I did a boost test and found no leaks, wastegates rattle a little but close at the right hg.

Thanks for the help

http://datazap.me/u/pits200/log

Last edited by pits200; 10-01-2013 at 09:16 PM.
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      10-01-2013, 11:47 PM   #2
Wedge1967
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Your boost is hitting about 50% of set point and target. So I would assume your user defined values are not allowing for 100% boost. Take a snapshot of your user settings.
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      10-02-2013, 06:48 AM   #3
pits200
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Quote:
Originally Posted by Wedge1967 View Post
Your boost is hitting about 50% of set point and target. So I would assume your user defined values are not allowing for 100% boost. Take a snapshot of your user settings.
Unfortunately that computer is in my car and I'm on the road. But I think you're look at dme boost vs boost set point.

My actual boost is about 10-15% lower if you take a look at the log again and my wastegate dc is getting pretty high which it usually never was.

It's very possible my turbos are getting worn as I have 75K miles on them.
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      10-02-2013, 08:23 AM   #4
Joshboody
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Check vac first since it's the easiest, then for a boost leak.
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      10-02-2013, 08:42 AM   #5
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maybe it's nothing, but doesn't Pit's duty cycle look high for only hitting 14psi in that first pull in the log? 83% DC at only 14psi seems off to me.
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      10-02-2013, 09:54 AM   #6
pits200
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Quote:
Originally Posted by jpsimon View Post
maybe it's nothing, but doesn't Pit's duty cycle look high for only hitting 14psi in that first pull in the log? 83% DC at only 14psi seems off to me.
Ya, that is kind of what I was thinking and I'm not exactly sure why it's trying so hard to hit it's boost target.

I suppose a vac leak would explain that a little but like I said I did a leak test up to 20psi and didn't hear or see much.
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