I have been following the threads about the MREV mod. I seem to gather that longer intake runners create more low end torque, but sacarifice some top-end power. The opposite seems true, short runners seem good for the high end.

Would it be possible to fabricate some sort of plenum or intake runner mod that actually adjusts its length based on RPM or speed? what im saying is something that can start off as a "long runner" and quickly turn into short runners at a certain RPM or speed or combo thereof?

Harv

 

Actually, in the 80's toyota had TVIS on the 4AGE motor. It had variable runners that changed the length. It was pre-Vtec.

 

Quite a few cars have some sort of variable runner system. I believe there was even a nonUSDM Nissan Maxima manifold with variable runners. Very hard to do well.

 

damn thats cool..lol.. How hard could it be? Just have rails and have a seloid that flicks them back.. lol probably requires a beefy *** selonoid.

 

Nevermind, read the original posters statement wrong, thanks, Blue05Z.

 

We are talking about intake runners, not induction tubes.