Stage 1 vs stage 2
 

What is the difference between a gmtu1 and 2

Where did you find the #2? As far as I know there is no such thing

My #2 is Trifecta, works great, boosts a mellow 25lbs.:D

Cool ssfan! I would argue though that stages two three, etc. would be more than just another tune. Ya know bigger ic, hard pipes, pulleys, injectors, exhaust, clutch... That sort of stuff.

Lady 3bglover's husband is working on stage-3, I'm eagerly awaiting the good news.:D

Yeah, you me and a bunch of others. But I have to admit if money wasn't an option I would go straight to stage 8 as in v8..

Sounds like the Stage 1 to me, just said to be a stage 2 to try and get more buyers.

Yea that site seem to be expensive

Look at the picture and performance specs then look at gmtu. They are identical. Plus I paid alot less installed over four years ago.