caffeine

Ok so I'm buying a stock 2006 Z06, with 25k miles.
I have a budget of $5000 give or take to spend.

Can forum members suggest the best mods to do to get the most reliable horsepower gain.

Thanks

RecMech

If I was starting with a stock Z06 and just want to increase the fun factor:

MGW Shifter
Headers and/or cat back
Cam
EFI Live or HP Tuners plus dyno tune
Tires
Spend the rest on days at the track running 1/4 or 1.0 mile passes

C6z06man

Don't forget you'll need to address the valve guide problem if it hasn't been done yet. You can fix the heads and do a cam in that budget.

Todds427

With a budget in mind, I would start by changing the CATback exhaust (new mufflers) stock suck and sound to quiet. Then I would add headers and new "X" pipe. Then change the air filter to a CAI (cold air intake) such as a Vararam, Blackhawk, Callaway, etc. and lastly I would purchase a handheld tuner like Diablo, they really help the car run better and more efficient, if you can contact Lewis for a custom tune using the Diablo, He IS AWESOME! and you wont recognize the car it will run so much better!!

Unreal

Heads, cam, intake, tune. That will easily eat up the $5k budget.