Hell my journal has info on every bolt on mod outside of a lightweight flywheel. I def agree with Gauge on this topic though. the differences between most aftermarket parts are within a few %. Then it starts becoming an aesthetics, reliability, and support thing. There are a few standouts though in the performance area. Most Vendors here will work to resolve issues, at least the ones on this forum. There are a handful that have not, and it's easy to find those complaints.
To date I have had great success with Motordyne, AE performance, AEM, Tanabe, GTM, NST, PPE, Z1, as well as inquiries with Boosted Performance, Fast Intentions, AAM, and Uprev. Some folks swear by Stillen G3's, F.I. exhausts, and Motordyne ART pipes. Everyone has opinions, if enough opinions are the same, then that is a good indicator of aesthetics, reliability, performance, and support.
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Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction
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