Is there a difference in the factory cats from the lsa to the ls3 other than the shape?
looking to use stock manifolds and cats for an lsa. Seeing if it’s worth the effort. Don’t want loud exhaust and what would the most HP or quickest someone has gone with the stock exhaust with cats?
looking to use stock manifolds and cats for an lsa. Seeing if it’s worth the effort. Don’t want loud exhaust and what would the most HP or quickest someone has gone with the stock exhaust with cats?
