posted already in 2nd gen forum, it i'd like to see what you guys think of this.

www.aero-turbine.com

it claims to reduce EGT's by a couple hundred degrees on piston engines, so i should think it would be a damn good idea in a turbo rotary.

 

It might do what it says it does, but consider this. If it accelerates the exhaust gas as it's entering the muffler, it does nothing for the exhaust gas throughout the rest of the system. It might push it out faster at the end, but it's going the same speed the rest of the time.

Imagine having an extra 30 hp when you hit 3rd gear. It will give you faster 1/4 mile times, but the 0-65 (or whatever redline of 2nd gear is) will be the same. If you could make a product that't accelerate the gas before it gets to the turbo... now you're talking.

 

I'm always open to new tech like this, but their explaination is missing ... something. It sounds like the usual perpetual motion BS that seems to crop up now and then.

Thermodynamically speaking, a simple nozzle can be said to "accelerate" air as well, since the velocity going into the large opening is slower than the exit velocity at the smaller exit opening. But in a nozzle, net flow in = net flow out, like 911GT2 is getting at. And a nozzle will present a restriction because of the smaller opening.

I'd say any HP gains seen from this device are due to its restrictiveness at low RPM. Think of how a motor can have less low-rpm torque after adding an aftermarket exhaust, but with the benefit of being more top-end-tuned.

If this offered a non-linear frequency to flow-resistance relationship, IE: tuned for lowend power *and* highend flow., then this gets more interesting. But the explaination on the site doesn't say anything of this sort.

Anyhow, our rotory temps will probably fry the thing to a crisp... unless it's "polished 304" inside as well :P

 

personally i never trusted these all in one auto parts (increases gas mileage, hp, ect) if something is to good to be true ... chances are it is.