[88Racing]

What kind of headers?

Long?

Short?

Long tubes you'll need a custom tune.

Shorties=look nice under the hood but do nothing for performance. No custom tune required.

Cat back exhaust=no custom tune needed.

High flow cats=need a custom tune.

X/H pipes=need a custom tune.

Intake kit=no tune needed a custom tune will make it better.

Supercharger=need a custom tune.

Best way to do custom tunes. Figure out what you are going to be modding before you order. I have given you just some examples that require or don't require them. After you figure out the mods. Go ahead and order the gryphon and it will come with canned tunes. But when you are ready to do the mods make sure the custom tunes are in place that are needed for the mods or you could be throwing a code or two. Just put all the info down on the order form and maybe call and talk to Bill.
Sure new custom tunes can be written at any time and cost extra but have them before the mods that need them are done.

Lars