4" exhaust????
#11
just put a 4" mbrp turbo back on my 01 crew cab 350. lovin it .sounds slightly deeper than stock. performance is well despite slower spool up when it dose boost ive noticed a slight more freedom to the motor the truck wants to move sometimes you just gotta let it run. 4'' down pipe might as well if your gonna do the whole system 4" why go only 90%
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