I have searched but I was wondering what are the gains for a 99 cali spec y pipe. It seems budget is taking forever to get the new y pipe out but it seems no cali spec owners upgrade there y pipes because of the main precat. How much hp will you gain for a 99 cali spec?

 

I'm interested in this info also.

 

i have a 99 cali spec, and i just installed budget y-pipe, test pipe, and new muffler.... i got about a 20hp boost from all 3 upgrades COMBINED. so i would guess that the y-pipe gave me about 10hp.

 

F the main precat. I got a budget pipe, and although I haven't taken it to a dyno yet, the butt dyno registered a definite improvement. Supposedly the new budget pipe can be retro-fit, so you could buy the regular one now and then the replacement piece later on down the line. I'm not too sure how they're going to pull that off, but either way the Y shows improvement, cali spec or not.

 

bump??

 

10-15 from the y pipe