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Old 09-03-2013, 01:28 PM   #3

Bad70supreme's Avatar
Drives: 2010 aqua blue SS/RS M6
Join Date: Feb 2010
Location: plainfield, IL
Posts: 2,706
What I see is 10 more HP at peak revs, and a tade more tq! Even though peak numbers are the same, you can see that up top the engine is breathing and pulling a tad stronger! I would not say it does nothing for power when it clearly does... Add some mods and that top end with the NPP exhaust will start to show even more! So if you want to keep a bone stock car it's fine, but add standard boltons I would want the NPP as I think it would clearly perform better.
10.91 at 122 H/C stock block N/A
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