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My brother and i have '05 Silverados, his a 5.3, me a 6.0. my tune worked wonders, his is not that great...

love the tranny mods...

Hi all;

I got the hptuners for me and my brother, he has the 5.3, k&n cold air, exhaust, 4.11 gears, lowered, and i have the 6.0 ss awd, same stuff.

Got a question tho, his engine has a nasty...