Gents,

Just bought a 2004 Denali XL, was curious about what performance items our out there - I'm sure that some will help out with gas mileage. I use to have a 01 Camaro SS, so the basic intake and exhaust seem like the first place to start. Let me know if I'm off on my assessment. Let me know what you guys all have done and the results.

Thanks in advance

 

See my sig, thats what I have done so far.

 

You have a ton of stuff - I bet she's a beast. I'm just lookinga t intake and exhaust for now, untill the warrenty runs out. What do you guys suggest, which ones work the best and which site vendor do you recommend. Thanks

 

i would say a good cat back, intake and a custom tune. that should help it out some and not void your warranty

 

What mwalls54 said would be a good start for you.