i've seen it a couple of times is there really any gain to switching to these? or is it just a waste of time switching to it? anyone got some dyno numbers? im talking about LIM AND UIM. thanks you guys

 

No real gains, or at least none worth going through all the trouble for.

 

ya thats what i was thinking more so just for looks.... ill prolly do it when i get my jspec motor i dont like the way the s5 motor looks w/o a intercooler... the manifolds just make it look like gagada

 

Aaron, do you have any info to back that up?


Soon, i may be able to tell you guys, but my car is not yet running. But i will switch between them..



I know just porting the TD has lots of gains up top, so we'll see..



-Zach

 

I know that soul assassin runs it on his 620Hp FC, and I consider him a good source for info and good modification ideas.

 

No, no real info to back it up. Just what I've heard for a few who have done it. Though if you REALLY want to know, see if Soul Assassin has a before and after dyno sheet...

 

Most people only put on the UIM as it just requires some grinding to do so. There are some horsepower gains to do changing the size of the surge chamber on the UIM.

Quote:
"While the intake ports are larger, the intake runners of these motors are still about the same size. The 13BT intake manifold has a surge tank plenum which is found to create too much pumping losses because of its large volume. The 13B-REW intake manifold is a "Dynamic Pressure Intake System" which eliminated the surge plenum tank and has opposed-facing secondary intake runners. This new design enhances intake flow by taking advantage of the strong pressure waves inherant in rotary engines. The throttle bodies on the 13BT are 3x45mm, while the 13B-REW are 1x45mm + 2x50mm."