Phoenix05VHO

Have you done any intake mods to yours. I am debating on whether or not to replace the air filter or purchase the intake system itself. Have you heard any bad things about FRAM Airhogs?

I have heard from some mechanics and techs that high performance air filters and cold air intake systems can actually do more harm than good by sucking more dirt into the engine compartment. Is there any truth to this and if so how do I eliminate this problem?

Can anyone recommend mods to existing exhaust/muffler for beefier sound? I do not want to replace the factory exhaust system. Just want her to Purr!! I would appreciate any input you may have.

Can anyone tell me what year Chevy/GMC released the VHO? I always thought the VHO was originally released as a "Mid year release - Performance Edition Package" in 2005 making this a limited production model. But I am noticing on this website some owners are saying they own a 2004. Also. does anyone know how many VHO's were manufactured in 05-06?

Could anyone tell me what they would recommend for plugs for 05 VHO? Heard that Bosch Platinum Series create problems w/ high performance engines.