91camaro372

I have a 91 camaro rs w/ a 3.1 v6 in it. I have the exhaust removed right now behind the cat because the cat and muffler was clogged. I need to make an exhaust system that will pass emissions. What I was thinking was throughing on a cheap universal cat, then do 3" pipe back to a flowmaster 40 series muffler behind the rear axle. The muffler would be 3" in and dual 2 1/2" out. Then have the 2 pipes go over the rear axle and come out on either side of the rear. Then after I get it to pass emissions i'm just going to replace the cat with a 3" pipe and hopefully some headers. If anybody has any suggestions for my car or a exaust system they think would work better that would be great.

91camaro372

Anyone at all?? I plan on doing the exhaust really soon so any input would be really appriciated...

nope

i'm no expert, but if you don't plan on going turbo i'd say you probably don't need a 3in pipe. that's just going to be adding extra noise especially if you get rid of the cat and put on headers.

IROCZTWENTYGR8

iTrader: (1)

The Dynomax system is good for V6 cars.

91camaro372

Well thats what I figured if I was staying with the v6 but eventually I want to throw in a 350 so I figured if I got my exaust set up now for that it would be better. So lets say I went to 2 1/2" could I still relocate the muffler and do a flowmaster single inlet/duel outlet behind the rear axle? Thats my main question here buecause I just dont like the idea of the crossflow muffler as much.

irocz28boy

iTrader: (2)

Relocate the muffler? Shouldn't it already be behind the rear axle as a 1 in 2 out? You can really put any muffler in stock location and just put a single exit. It doesn't have to be a crossflow. So to your main question, yes you can put a Flowmaster single in/dual out behind the rear axle.

project89

iTrader: (1)

u do not want a flowmaster on the v6 it sounds absolutly horid

a dynomax or magnaflow will perform and sound much beter then the flowmaster

if ur going to have the v6 for a while stick with 2.5 inch pipes a 3 inch ex will kill the low end tq u do have now.

91camaro372

Ok thanks for the help everyone. I have decided just to go with a dynomax catback because overall it would be cheaper and summit has a deal on them right now. Does anyone have a sound clip or video of a 3.1l camaro with a dynomax catback?

91camaro372

Ok so for my cat could I just use this catco universal cat with the dynomax catback? http://store.summitracing.com/partde...?part=CTO-6906
I have my exaust cut halfway through the bend into the cat so i'm going to need to cut it back a little farther and replace the bend and the cat. It would be much cheaper to buy the universal cat thats why I ask. Also sense it is a universal cat how would I go about bolting the cat to the catback system?

Thanks for the help so far everyone...