Ok, just installed my catback on my 02 firebird v6
all of the plates besides the closed, and smallest hole after closed suck and sound ricey when you're above 3,000rpms
i put the closed plate in, and noticed a fairly big performance gain, but the exhaust sounded near stock.. only one pipe is being used, the other one is blocked off so nothing comes out the tip
the second to closed plate sounds good and has a little performance gain.. when you floor it in first it get raspy, but after that its nicee.. when im taching in 3rd or 4th gear it sounds great
over all i'd use one of these 2 plates
all of the plates besides the closed, and smallest hole after closed suck and sound ricey when you're above 3,000rpms
i put the closed plate in, and noticed a fairly big performance gain, but the exhaust sounded near stock.. only one pipe is being used, the other one is blocked off so nothing comes out the tip
the second to closed plate sounds good and has a little performance gain.. when you floor it in first it get raspy, but after that its nicee.. when im taching in 3rd or 4th gear it sounds great
over all i'd use one of these 2 plates
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