Twin Scroll Comparison...Before/After
Twin Scroll Comparison...Before/After
Not sure if this is of interest to anyone here but here is a recent car we just finished up. Although it IS NOT an Evo (Honda s2000) it is still a pretty direct comparison.
Before is with an open long runner sidemount manifold/GT4094r .85ar Housing
After is with Divided long runner sidemount manifold/GT4094r 1.06 housing.
Results
Before is with an open long runner sidemount manifold/GT4094r .85ar Housing
After is with Divided long runner sidemount manifold/GT4094r 1.06 housing.
Results
I'm sure someone will tell you your test is no good because TS is just hype...
That being said, I've been doing TS turbo set ups for the last 4yrs and those graph look very familiar
That being said, I've been doing TS turbo set ups for the last 4yrs and those graph look very familiar
That seems like an unusual choice of turbo for the S2000 at that power level, but that is a tremendous difference. I should emphasize tremendous because in my experience, the difference between the open and twinscroll is far more vivid on the street than on the dyno. The owner must have noted a night/day difference in power delivery.
On the dyno, there is a 700 rpm improvement in spool and much more power under the curve. This is despite the fact that the TS setup was run at ~2psi less boost.
On the dyno, there is a 700 rpm improvement in spool and much more power under the curve. This is despite the fact that the TS setup was run at ~2psi less boost.
Where is the Vtec jump?? Normally we see a jump when Vtec hits but i am not sure how your dyno reads.. Hard to compare with what i have seen on dynojets since your using a dynapack.. I would still run 6262 on an s2000.. In single scroll they have a better powerband than the 4094 from my experience..
Mike
Mike
Where is the Vtec jump?? Normally we see a jump when Vtec hits but i am not sure how your dyno reads.. Hard to compare with what i have seen on dynojets since your using a dynapack.. I would still run 6262 on an s2000.. In single scroll they have a better powerband than the 4094 from my experience..
Mike
Mike
We've made ~840whp on a 4094 before, i also don't know if we can get the 45+psi out of a t3 6262 on a honda motor needed to make those numbers.
Either way 6262 is badass
Trending Topics
That seems like an unusual choice of turbo for the S2000 at that power level, but that is a tremendous difference. I should emphasize tremendous because in my experience, the difference between the open and twinscroll is far more vivid on the street than on the dyno. The owner must have noted a night/day difference in power delivery.
On the dyno, there is a 700 rpm improvement in spool and much more power under the curve. This is despite the fact that the TS setup was run at ~2psi less boost.
On the dyno, there is a 700 rpm improvement in spool and much more power under the curve. This is despite the fact that the TS setup was run at ~2psi less boost.
This was just pump gas, off the wastegate springs. The car will make 800+.
The car is a whole different car on the street...can't even compare as is the case with most twin scroll cars.
I think the overwhelming consensus is that a different turbo would be a better fit here, but this is about illustrating the before/after difference between open/twin, with the same turbo, same car.
Regardless of what turbo is used, anytime one can create more power under the curve and spool it faster, with no significant changes, it's a win/win situation.
Regardless of what turbo is used, anytime one can create more power under the curve and spool it faster, with no significant changes, it's a win/win situation.
That seems like an unusual choice of turbo for the S2000 at that power level, but that is a tremendous difference. I should emphasize tremendous because in my experience, the difference between the open and twinscroll is far more vivid on the street than on the dyno. The owner must have noted a night/day difference in power delivery.
On the dyno, there is a 700 rpm improvement in spool and much more power under the curve. This is despite the fact that the TS setup was run at ~2psi less boost.
On the dyno, there is a 700 rpm improvement in spool and much more power under the curve. This is despite the fact that the TS setup was run at ~2psi less boost.
Jesse its a loosing battle lol, the 4094r is a garbage turbo dont you know this!! I mean you guys only went 9.60's on it on like 30lbs right. Hey wasnt that manifold a twin scroll too 
Alright great results though, can you post pics of this machine? Its not the silver one is it?
Alright great results though, can you post pics of this machine? Its not the silver one is it?
is that s2000 a 2.2 motor with with variable valve timing and lift on the intake and exhaust cams?
)Look at the gains @ 5000rpms ~119wtq/113whp. Thats hard to argue
BTW: I'm not saying the gt4094r is the best turbo ever...far from it. Its what the owner of the car had and wanted to work with. I would love to see something like a s366 on the car
Last edited by AFI Turbo; Jun 15, 2009 at 09:06 PM.