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Originally Posted by south_ms_sprcru
did you cut all four of your cats off? and the high flow cats you got, do you happen to have their part numbers?
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yeah I cut off all 4 cats and replaced them with the Magnaflow cats. The part numbers for everything are:
(2) Magnaflow Cats (94305)
(2) 14” round 2.25” Magnaflow Mufflers (10415)
Magnaflow X-Pipe (10790)
I didn't notice any torque loss or gain personally, but I haven't put many miles on since getting everything installed. The truck is near silent at idle, it can get a little loud at around 2 - 2.5k rpm, but it doesn't drive me nuts. I'll see if I can get a better video later this week.