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Old 02-17-2013, 11:45 AM
MustGoFast MustGoFast is offline
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Location: Menomonee Falls, WI
 
Join Date: Dec 2007
Posts: 553
Mein Auto: 2011 BMW 335is
Quote:
Originally Posted by Mau View Post
Hey there. Had the JB on for about 10 days and the extra power (up to 50hp claims) is just not there. Feels a bit sluggish on bottom end. Boosting about 10 lbs. Had many turbos before and you should definitely feel 50 whp difference. Ran a few times with a friend with a '13 335i and pulled away every time. Any experiences out there?
I would be surprised as well to not feel a difference, but even at 50whp a 335 is going to walk you hard, that's a HUGE weight difference to account for. I believe it's nearly 1400 lbs. An old metric that I was once told was 10lbs/hp for a simple comparison. So to really keep up with a 335 you need 140hp (ballpark) to account for the weight.
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