Which hi-flow cat to buy?
Merge collectors will be 3" and the y will be 3" also.
Barry from QTP did flow testing and I believe he chose the Catco for the best bang for the buck.
I am looking for a cat that costs around 50 dollars. Carsound and Catcos go for that much on ebay.
My real question is, are all Catco and Carsound cats universal or car-specific in a custom installation?

