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      07-29-2011, 01:10 PM   #40
Mark06
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Drives: 330i
Join Date: Mar 2011
Location: Texas

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Quote:
Originally Posted by Volasko View Post
You should post a video if possible of this choppy acceleration. I am having a hard time understanding what exactly choppy acceleration is? I would have taken it directly to the place that did the tune!
I did take it back and they replaced an O2 sensor that was faulty. This made the codes go away but did nothing regarding the acceleration.
The best way I can describe "choppy acceleration" is by rpms at WOT:
1-3.5k: everything is normal (smooth and power feels about right)
~4k: We are still accelerating but it feels like I let off to about half throttle for half a second
4-5k: The engine feels like it surges and "makes up for" the hesitation around 4k
5k: hesitation similar to at 4k
5-7k: once again, everything is normal (smooth and power feels about right)

Hope this helps
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