New 07 Hummer got Questions....

[Adrianhummedup]

Hello Hummer peeps!! New to the site and have a few questions I hope I can get answered in here.

2007 Hummer H3 Black on Black....

1. Throttle Body spacers(Poweraid Spacer), are these a good buy in regards to throttle improvement and gas mileage? Also will it void my warranty if detected?

2. Cat back exhaust, or are there any other exhaust you'd recommend besides Magnaflow?

3. Airaid Intake System, will this void my factory warranty as well and are the gains noticeable? I'm looking for a tad bit of low end throttle response and a tad bit better gas mileage not much its a Hummer...

Gizzone