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hey just got off phone w/brian at GHL. he states 30 hp increase for turbos not N/A cars. n/a cars about 13 more hp and builds torque thru entire rpm range.
heat equal to oem.
no clearance issues ie. bigger than stock or ssi's.
yes you must use ghl exhaust only.
"nominal hp" difference btwn single out or dual out exhaust.( dont really want to cut on my RUF valance).
decisions decisions??????????
is louder he stated.(not a big deal w/cab, its already loud)
lifetime warranty to original buyer.
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