[Nasty]

The A/F is going to change but it's only going to be a few tenths of a point. So, yes you'll be fine to drive it for a little bit until you get a tune. It's going to throw a CEL, probably. So order a tune for them and you can drive it until you get it. Unless you've got a tune that's already on the ragged edge you'll be fine.

 

[Nasty]

VMP is definitely a good choice, you won't be disappointed. Turn around times are pretty good, too. If you email Justin, he can give you an idea on when he can get it done.

 

[Nasty]

I dynoed mine before and after. The A/F went from from 12.6 to 13.4.

Hard to believe..

 

[Nasty]

What kind of headers? Any graphs?

 

[Nasty]

Do you have a graph that you can post up?