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My NWP 75mm throttle body upgrade review

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Old 07-22-2015, 07:16 AM
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the3kgt2
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Originally Posted by 93viperrt10 View Post
Grassroots Motorsports did a piece on this upgrade in its August 2015 magazine. They did back to back dyno testing of this upgrade and found that there is a 5 hp increase between 4800 and 5500 rpm. Since that is the sweet spot if you track your car then maybe $350 for 5hp is worth it.
Did they do a tune before and after? If not it could just be leaning out the tune. When I tuned the throttle body we didn't gain anything.
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