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Re: Better gas mileage...
Don't waste your time. They are junk and are a scam to make money. If you must have it then I would recommend the throttle body spacer. I doubt it will save gas and see horsepower but it will give you a better whistling sound.
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2006 Titan XE 4x4 (PRG 4" Performance package)
2003 Evolution VIII (358awhp/354awtq) that's on 91octane,stock boost, stock turbo.
2007 GSXR1000 (not enough road to touch redline)
"Dream as if you'll live forever, live as if you'll die tommorow" : James Dean.
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