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Originally Posted by amracer
how you guys just installed a generation 2 stillen exhaust and I love the sound but I don't feel any gain in performance just wondering if you guys had this same expierence with the generation 1
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I noticed some... not a ton. The sound changes quite a bit obviously. I had CAI insstalled at the smae time so the combo might result different than exhaust alone or CAI alone. Also, the 2nd gen is a littel quieter but with that I've heard it has a littel less gains.
If you just got it, give it a week or so... the ECU needs to adapt and the exhaust might "open up". All I can tell you is I've always dyno'd strong and tracked well against other VQs -so for me the combo of mods I have work well.
FWIW, the MD 1/2" spacer was the most recognizable butt dyno gains I got. Definitely best bang for the buck that I have.
I just got HFC today... still evaluating... seems the low end TQ is a little stronger but it seems sluggish in the mid-upper end. I'm going to have the ECU re-flash updated tomorrow... We'll see how it goes.
With bolts ons you will not get any neck jerking performance gains... and from what I've experienced, the
combo of the "right mods" is what will show the best improvement.