l83 6l80been trying to refer my tune to other stock tunes finally got rid of all my dtcs. as well as my map issues.stil having cold start issues,isnt hunting for idle but runs like a dog ,no ass at all for the claimed 400hp 425lbs.ft torque as discliaimed in hot rod magizine. iam just wandering if iam ready to maf an ve tune with whats goimg on with this scan,yes i have a leaky bank 2 exhaust going have it bent more an buttoned up when weather permits.just hoping tranny setting an vss is right an if that would cause low power.not getting any limp modes as far as i know.