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Barely any power under ~2500rpm, then crazy power.. motor needs cleaning?
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| 03-18-2013, 10:02 PM | #1 |
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Second Lieutenant
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Barely any power under ~2500rpm, then crazy power.. motor needs cleaning?
Ive noticed that lately my car barely has any power below 2000rpm... it only really seems to kick in around 2500rpm... The car has 76000km (48000 miles) on it.. do you think the engine is getting dirty and needs a proper cleaning? It has new oil, spark plugs, and air filter.
Its also chipped with COBB... If I put it in 6th gear on the highway and floor it, it sounds like its really bogged down and doesn't really seem to have much pick up... Anywhere I should start? The power above 2500 rpm is pretty crazy though. I think peak torque starts under 2000rpm in this car so something must be wrong. Last edited by jonmaceng; 03-18-2013 at 10:19 PM.. |
| 03-18-2013, 10:04 PM | #2 |
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Second Lieutenant
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Did you notice this after installing the cobb
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| 03-18-2013, 10:18 PM | #3 | |
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Second Lieutenant
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Quote:
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| 03-18-2013, 11:49 PM | #4 | |
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Lieutenant
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Quote:
Unless you are at 80+MPH in 6th gear 'flooring' it at low rpms is NOT GOOD for turbo cars...try downshifting to 4th then have at it!! |
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| 03-21-2013, 01:31 AM | #5 |
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First Lieutenant
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Probably the turbos. happend to my cousin with a jb4 tune after a while no power under 2500rpm and when he upgraded to RB turbos it was much better so I'm not recommending going with hybrid turbos, I'm just saying that it might be the case. Hope this helped
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| 03-21-2013, 01:52 AM | #6 |
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Colonel
 
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Drives: BMW 335xi Sedan; BMW M3 ZCP
Join Date: Nov 2007
Location: NYC
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You changed your plugs, now Clean your valves. I had my cleaned (walnut blast), and you feel the immediate difference under 2500rpm.
If all fails, check for boost leaks and your turbos
__________________
335xi Sedan 6AT | Weather(70-85°F) | N54 Tune Comparison Chart || N54 Turbo Upgrade Comparison Chart
-PROcede Rev. 2.5 ~ v5 (3/17 maps) / JB4 (8/21 maps) / COBB (Stg2+FMIC LT Aggressive maps) †Procede Map2(UT 45 - IGN 40) Aggression Target 2.0 | 0-60 in 4.0sec || †Cobb E30 LT (35% Ethanol/65% 93 Octane) | 0-60 in 3.9sec AR Design Catless DP | BMS DCI + OCC | ETS 5 FMIC | Alpina B3 Trans Flash |235/265 19" Michelin PSS |
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