Mail Order Tune Vs Dyno..
And I know a few buddies that tryed that and it ended very bad. there are also many other things that the Dyno tune guy can tell you that the mail order guy can't. Fuel press. levels. injectors maxing. not the right boost level. the list can go on and on......
And with the mail order you still don't know what your car made or if it is right or the best it can be.
If that is not an option the real question is does this new guy know what he's doing?

