I have the Invidia and made good power. You can see the Dyno sheet in my signature. That was with Invidia test pipes, K&N typhoon intakes the Invidia Gemini CBE and uprev. I now swapped the test pipes for Invidia 200 cel HFC's for state inspection. My shop that tuned my car said a retune wouldn't be necessary since those HFC weren't very restrictive at all and shouldn't have lost any real power.
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2013 Ford Mustang GT 5.0 6MT ROUSH intake | ROUSH axle back | ROUSH shift knob | ROUSH coil covers 2009 NISSAN 370Z SOLD
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