I'm planning on going with a rev hard turbo kit. The stage 1 sounds pretty good, but then the stage 2 doesn't look so bad either.

So heres my question. Has anyone had a stage 1 or stage 2 that can tell if there is any lagg time difference between the two? At what RPM is the stage 1 and stage 2 going to give me full boost?

 

Many things factor in to when it will spool, but my friends si with 2.5 downpipe and non turbo n1 spooled a stage 2 around 4500. Pretty shitty spool for a turbo that small (t3/to4b). Made like 245 at 7 pounds or something like that.

 

there are 2 many factors such as what motor you have . . . . if you have any sort of internals or headwork done etc . . . . you'll prob. hit full boost depending on how much you plan to boost at about 4,000rpms

 

i have the stage 2 and i love it..but its for sale

 

i have the stage 2 it spools at about 4700. they can make some power too.
i have mine tuned to 15psi 340 hp and 19psi 360hp. the difference
is at the higher boost levels its not efficient