Quote Originally Posted by Scottydoggs View Post
Top Swap Info and Faqs, Also lots of 3800 Info read this, and then re read it.

your tech 2 is not gonna re tune the pcm. if your na now your running twice as much timing as a sc set up. so you'll need a re tune.

hd tranny is kinda a waste of money, not needed. only difference is the hd diff. and most like the na gears better then the sc hd tranny gears.

and get the 3 inch down pipe if your plan is to top swap it. might even want to get headers and add a 3 inch 50 dollar ebay hi flow cat to the dp.
Meant using the Tech2 for diagnostic troubleshooting moreso, $40 charge to reprogram my PCM with ZZP isn't bad, not worth spending $500+ on my own HPTuners setup.

Really surprised to hear that about the HD trans, honestly relieved though.

I was thinking I'd go 3-inch anyways because I'd think it would sound deeper, don't want an annoying high pitched drone exhaust.