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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 > Data log with weird RPM oscillation



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      11-06-2013, 06:51 PM   #1
deadmn1337
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Data log with weird RPM oscillation

Hey guys,

Did some data logging after a weird oscillation started to appear on my Cobb E30 OTS map. Take a look and let me know what you guys think might be causing it. I have DP's, IC, and exhaust on a e35 mix.

http://www.datazap.me/u/deadmn1337/3...-pull-1?1-8-22

http://www.datazap.me/u/deadmn1337/3...-e30-lt-pull-2

two different logs in case they caught something different but they both look similar to me.

Last edited by deadmn1337; 11-06-2013 at 07:09 PM..
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      11-06-2013, 07:52 PM   #2
WedgePerformance
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Clutch slip...
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      11-06-2013, 08:32 PM   #3
deadmn1337
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Quote:
Originally Posted by WedgePerformance View Post
Clutch slip...
Thats what i was thinking but it didnt feel like it at the time. I'll have to try a higher gear and see if it does it still, if so i guess i found my christmas present for myself this year.
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      11-06-2013, 09:22 PM   #4
Allen@MOTIV
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Definitely the clutch getting overpowered... It's a good problem to have

BTW, we carry SPEC clutches and flywheels and will match ANY competitors pricing.
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      11-06-2013, 09:41 PM   #5
deadmn1337
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Quote:
Originally Posted by Allen@PTF View Post
Definitely the clutch getting overpowered... It's a good problem to have

BTW, we carry SPEC clutches and flywheels and will match ANY competitors pricing.
Awesome! I will keep you guys in mind in the coming weeks as SPEC is the brand that I'm going with.
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