My question would be, are you also changing your H-pipe? I have the Dynomax super turbo cat-back, and I didn't notice a
big difference in sound or performance until I changed to my off road H-pipe. Then the car sounded
way meaner and I noticed a good gain in power.
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White 1995 Mustang GT
Dynomax Cat-Back, Offroad H-pipe, a chip, K&N Filters w/o Air Silencer
My 1995 Mustang GT