TwinTurbo.NET: Nissan 300ZX forum - 3 inch exhaust questions
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Subject 3 inch exhaust questions
     
Posted by EUGENE on March 28, 2009 at 1:29 AM
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Message I'm just about to buy the Z1 GT675RS turbos and Mike Smith manifolds. Currently I have stock gutted precats, 2.5" test pipes, and Greddy EVO2 catback. The catback is relatively new and I wish I'd gotten a 3 inch catback, but I didn't, so I'm just gonna just live with it. But I would like 3 inch downpipes and testpipes.

I have two concerns. First, the Alloy Toyz 3 inch SS downpipes and 3 inch to 2.5 inch SS testpipes look nice, but I haven't heard much about them. Do most people think of these like the AMS knockoff manifolds or are these products better?

Second, I passed my GA emissions inspection when I still had a stock exhaust system. My next inspection will come in about 6 months. If I install this 3 inch system, is there any way that I can temporarily reinstall my cats to pass inspection or is there no turning back after I install 3 inch downpipes?

     
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