Originally Posted by we_fly_high Im about to throw my XL magnaflow on the saab, ill take before and after for you but idle shouldnt change much. Not a fan of the XL models. They are not true straight thru flow.
ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06 waiting to go in... 3.90s, 214/220cam
I bought it for $30, brand new so no worries. This one is straight through, ill take a pic tomarrow but its just the round one.
2004 Avalanche pewter/black Cammed, Stalled, SOLD! 2009 Saab 9-7x Aero, Diamond Silver 1 of 21
Originally Posted by kerrige Not a fan of the XL models. They are not true straight thru flow. What muffler are you using on your truck??
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