Hey guys I recently purchased a 1990 IROCZ with the lb9 and plan on upgrading to an LS1 setup in the future(couple of years) and until then I want a nice catback system in the mean time, I've pretty much decided on the Magnaflow 16829 system. Once I upgrade to an LS1 Will this catback setup be compatible with it, in terms of appropiate flow levels and backpressure is concerned? Also I read somewhere that the Magnaflow catback isn't ideal for a TPI motor is there any truth to this?









http://www.magnaflow.com/02product/d...rtnumber=16829

 

is noise a factor in this? because I have a gmmg on mine good for 82-02 F body and it is my favorite catback for our F body. alittle on the loud side tho with my headers and duel y pipe. Did not hear about magnaflow not being good for tpi before.

 

Noise isn't a factor, I want a catback that'll sound real nice(deep,growly kinda raspy tone) that is loud. Though I live in CA so I cant really get headers and a true dual exhaust going on, won't pass smog.

 

Also was wondering what the internal diameter is of the flangs; 2.5 or 3inch?