I'm looking to get high flow cats for my 06 sts v and can't seem to find them anywhere! Can someone help me out here and give me a link where I can order them or any other recommendations what the best ones to put on are. THANKS!!
It's gonna be custom as our cats are part of the exhaust manifolds. Normally to replace the cats you have to replace the manifolds. If you can find a shop that is will to cut off the stock cats and weld flanges to the manifolds you can add aftermarket cats. Either option is not going to be cheap. The stock manifolds are about $1500 a piece. You could also buy a set of Tim's headers and add any aftermarket cats you want. With that option you would need to modify the stock exhaust to accept the cats as Tim's are designed to be used without cats.