yea, me too
it says kazuma-20hp
yeah, as mentioned in my post above--this is if you retuen your ecu. since most tuners simply bolt exhausts on, the 20 whp is NOT realized.
imo, you'd be lucky to get half that. but i havnt seen a dyno yet of just the pure bolt-on so thats just a guess. but i do know that you won't get 20 whp just from bolting it on.
for example: as far as saying the regular TRD
gives 10 whp..i HAVE seen a few dynos of these with just doing the pure bolt-on (no retuning) and it only gives 4 whp (which is actually a lot for only an exhaust)