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Discussion Starter · #1 ·
i have flowmaster super 40 mufflers and i kinda want it to be louder. im considering cutting off before the muffler and after the muffler then just welding in a plain old pipe. what will the effects of this be? will this make my car stall out? will i lose hp? will i gain hp? will i lose or gain gas mileage? has anyone done this? btw i have an 04 3.9l with full bolt ons
 
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