Hi, I just recently got this ss and it’s a lot of fun.

I just replaced the IC Pump and got a new CAI and like I said it’s tons of fun but I really would like to pump my power up to 250 maybe even more. I would prefer to stick with 91 since 93 isn’t available near me and I want better mpg then 85. I was thinking maybe the stage 2 kit or stage 3 but I just want to know what would be the best for 91.

Any suggestions would be much appreciated, thanks in advance.

 

Looks like the LSJ tech support went down hill lately.
Unless you're doing a super nasty build, the LSJ doesn't need 91 or 93. Bone stock, run 87. If you're going with the Stage 2, you can run 89. If you're going for fuel economy, always run the lowest octane you can without knocking.

You want an easy power mod list?
Long tube header, 2.8 or 2.9 pulley, 60's, dual pass, tune.... done.