***Topgunz ROTREX C38R Supercharger Kit***

INFmstrTech

Stillin plenum with A2A setup....15.2 psi with a v3 SCi trim 2.87 serpentine pulley, 3.47 jackshaft pulley, 2.95 supercharger pulley, K&N filter. Validated through EcuTek data log. I’m sure if I had an Si or upgraded Ti trim and no filter it may be more...but that v3 can’t take that abuse for long before the oil slinger is destroyed and is eaten by the gears-trust me on that.

__________________
‘08 coupe w/Stillen SC, Custom A2A, SD, ID1050x, e85, eagle rods, high temp coated pistons, P&P heads, JWT C2, manual swap, stage 2 clutch. EcuTek(Eugene)

Optimiser

I have also have Stillin plenum with A2A setup but about 2000rpm slower with my pulley sizes (checked with Vortex calculator), but with upgraded Si trim and only get 10psi. I'm also running the "standard" belts on serp and SC. Are you using the Gates "RPM" belt(s)?
I have ordered these to see if they will help with boost, otherwise I have no idea how you could get 50% more boost than me, but would love to know.

DrBacon

It does happen. I have nothing more than a stock v3 SI and an RPM belt on the supercharger side (planning on trying to add one to the serp side as well as an experiment in the near future). I really can't stress enough how much of a difference that RPM belt makes. That normal belt stretches VERY quickly and begins to slip as a result. The last dyno run I did with the "normal" belt was at 10.5psi because of how bad it got.

I don't think we should continue to derail Topgunz topic with this old kit talk though.

INFmstrTech

[QUOTE= I don't think we should continue to derail Topgunz topic with this old kit talk though.[/QUOTE]

Agreed, just wanted to relay how it was achieved. That being said...I would MUCH MUCH rather move to the rotrex setup. Much easier to reach HP #’s(if your chasing that), the efficiency of the supercharger to me is one of the biggest pros; plus I HATE the Stillen manifold...I have the jx/qx60/maxima(whatever you want to go with there) T/B’s and adapters that absolutely do not fit because of the location of the Stillen mounting for the stock t/b. Having the stock manifold would just be that much better, especially with the bigger t/b’s. Super impressive Topgunz-keep up the fantastic work!

__________________
‘08 coupe w/Stillen SC, Custom A2A, SD, ID1050x, e85, eagle rods, high temp coated pistons, P&P heads, JWT C2, manual swap, stage 2 clutch. EcuTek(Eugene)