Yea I notice mines comes on around 4500 rpm... That's when the engine changes tones.. However it really doesn't start to pull until about 5300 or 5500... That's why I don't like the dual stage... I much rather have a single stage like on the other VTEC's..
Actually now that you guys mention it, i think it engages at 4400rpm and the butterflies open at 5500-5700rpm not sure though, never had a 1.8 nor that intake manny. Milan
I do not have the GSR manifold (using a B16 head) so I garauntee that the VTEC crossover is at 4400. It is very audible with ITR cams.
so when does it open on the p28? same rpm's? i have the mugen chip in mine and it opens at 4400 and redlines at 8200 and i would like to know if this chip is fubar'd
mugen does not make "chips" you have a clone of a mugen ECU and someone changed the rev limit and the vtec crossover.