this would be such a good thing for the holset community, with a ton of sales involved..
I've thought about making one myself since I have an actuator and bracket laying around, but with school and work, and no welder, it's just not possible..

so I figured one of you guys might want to jump on it.. the only thing i'm expecting is the 2nd or 3rd one at a really low price.. maybe start a nog discount after that to support the site, and then branch out at full price to the dsm/subby/etc. guys out there..

it's a great concept.. single port open until 5psi or so, then the actuator pulls the lever and port #2 is exposed..

 

cool Idea how much for that and is that a T4 bolt pattern?

 

Last time I checked, those bad bitches were goin for $600+......

 

From memory the series 4 RX7 uses this type of setup standard.

 

Excuse me if im ignorant.. but would this not effectively block off 2 runners on a properly made twin scroll manifold?

 

yes, but you cant do paired cylinders with a setup like this, everything has to merge to a common collector

 

The theory on this would be to use a divided exhaust housing, with a standard merge collector

 

wouldnt this make your exhaust back pressure skyrocket?

 

it opens at a given psi, so lets say 3psi or 4psi.. a honda for instance, isn't going to even make enough horsepower to be affected by the back pressure enough to notice a change.. it's all about increasing spool time on a big turbo

i'm surprised no one here is jumping on this idea.