Thread: Has Anyone Gone From Jb4 To Cobb??
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      01-31-2013, 08:22 AM   #42
SfValley335i
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Quote:
Originally Posted by RnmEvo9 View Post
I had JB4, switched to Cobb and made a LOT more power with it. What gives?

Thats your opinion but dyno charts dont lie. Jb4 makes more power up top compared to cobb ots.
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