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So, I have an HKS TD exhaust, and JWT popcharger. Just got my Kinetix HFC's installed. I have to say, it added a tiny bit of rasp, and doesn't feel like it pulls any harder. Maybe slightly, but that might be me imagining it to feel like I didn't waste my money.
The only thing I haven't tried is resetting my ECU - could this be the reason I don't feel anything?
Feel anything? Like maybe 5 additional horsepower. That would be about 2 percent additional horsepower. You need a very sensitive butt dyno to feel a 2 percent change.