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03-22-2012, 10:56 AM #1
Off road mids instead of high flow cats
I live in a county that doesnt do smog testing, so i put on the off road mids. is there any downside to this setup besides the obvious of not passing emissions if tested? and the noise of course.
2005 Impulse Blue GTO
Kooks Longtube Headers (off-road mids) , SLP Loudmouth II Catback, Vararam OTRCAI, MSD Spark Wires, 238/242 .595, Trickflow 225cc Heads, SLP 25% UD Pulley, Breather, Elite Engineering Catch Can, 3200 TC,Hayden Trans Cooler, P&P TB, Dyno tune by Sunshine Performance
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03-22-2012, 04:31 PM #2
- Join Date
- Jan 2009
- Location
- North Jersey
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- 11,496
Phantom Black Metallic- 2004 GTO M6
I don't think there are any issues other than the noise and possibility of an inspector looking. You should be good to go.
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03-23-2012, 06:22 AM #3
The off road mids just give ya more flow, I have close to the same set up, also had the diablosport tune in mine. Then I took mine to a tuner and the DS tuner made the least power so first I would put it back to the stock tune it will handle that set up better, in fact the stock tune made 12 more hp, and after he finished the tune there was a 67 hp difference to the wheels, so unless your going to do any big changes the next step to do is take it to a tuner and you won't think it is the same car.
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03-23-2012, 10:41 AM #4
thanks for the input gents.
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