So what is the stock hp rating for the 4sp auto trans? Is it 235 or 250? I haven't been able to get a real answer for that yet.

I just picked up a new 09 SS to replace my LT2 that was rearended.
Tx
Eddie

 

235

 

235 in 1st and 2nd then 250 in 3rd and 4th

 

Well, I'm hot off the dyno and with my tune off I put down 277WHP and 270TQ BUT when I hit that button it was a whole different story @ 28 pounds of boost I was at 315WHP and 388TQ.

I have an exhaust, catless down pipe, inter cooler, piping, k&n intake and to tie it all in a Trifecta dual tune.

 

So is this GM stage tuned over with Trifecta? To bad the comparison wasn't at the same boost; GM stage tune 22 psi, Trifecta 22 psi. I don't know if I'd be comfortable with running 28 psi with some of the problems other LNF's are having over the long haul with high boost.

Yes I know you can request the boost at what ever # you want with Trifecta.

 

Yeah im accually getting my tune turned down a little bit

 

Well, my gauge stays between 22 and 25 psi, but the dyno read 28psi.

 

On my tune i tips in at 26psi and settles at 24 but i need to tame it down a bit lol.

 

Nice numbers, I'm assuming yours is a 5sp right?

 

Tx guys!