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Old 08-01-2012, 10:05 AM   #12
Cruising in Top Gear
ac_2007's Avatar
Join Date: Aug 2011
Location: Brampton / Mississauga
Posts: 1,199
Originally Posted by vic325ci View Post
...actually it adds 3% which is about 7 hp on a 330...and if you're worried about inefficiency, then you might as well get an M3
3% on paper? I really want someone to prove me wrong and demonstrate that underdrive pulleys actually have these gains on a dyno. Regardless, anything under 10hp gain remains basically unnoticeable.

To the OP, why not get him some LED tail lights to update the look of the rear? They'd only run about $250 shipped, or in some cases cheaper. I'd really like to know where and how an Mtech bumper could come under $500 painted.
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