Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner
1 - 14 of 14 Posts

2 Posts
Discussion Starter · #1 ·
My name is Bob. I have a 2007 Envoy Denali 5.3 V8. Plans include a dual exhaust modification and hi flow air box with some programming to maximize fuel economy and HP/ torque.
I'm open to suggestions on the exhaust mods, but has to be a bolt on as I'm going to do this in the driveway.
1 - 14 of 14 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.