i did the "mail in" flash about a year ago..... do i need to do a reflash if I add just a perrin catback? Car is otherwise stock.

thanks

 

no you don't

 

Will i see much gain with the Perrin catback with the "mail in" reflash?

thanks

 

Al.... do you agree that I don't need a reflash if i get just a cat back?

thanks

 

I'm pretty sure you dont _need_ one but I did get one when I got my catback. Now I'm wondering if I should get a reflash with my new dp and high flow cat.

You should be ok.. but you may need a MBC to keep boost under control with the exhaust.