Gonna check out the spool w/o the catback in the near future and am thinking about using this for the cutouts. Anyone use it or know of someone? How'd you/they like it and how does it compare to running the electric setup?



Writeup on it:
The VES system is a system that works “on demand” at the onset of boost on turbo and supercharged vehicles to free up all the backpressure (just as a large exhaust system would) in the exhaust stream so the engine can make maximum power. The VES system works as an active dump tube that completely bypasses the restrictive exhaust system when boost is present. As soon as the turbo spools, the valve begins to open. By the time the turbo makes full boost, the valve is fully open.

Highlights of the way VES works:

* Completely quiet and stock-like sounding during startup, idle, and cruising.
* 0 delay in valve response to boost, yet very smooth transition into boost mode.
* Automatic open/close under boost using existing boost source on turbo engine and does not rely on wing nuts or electrical motors.
* Integrate a boost controller to control when the valve opens or completely turn it off.
* Addresses virtually all complaints associated with large 3” cat-back exhaust systems.

Highlights of how our VES components are built:

* Solid billet steel construction holds up to high (turbo) temps and won’t fatigue and fail in continuous heat.
* Precision CNC machined to tighter tolerances for a gasket-less seal.
* Built using existing, reliable wastegating technology.
* Standard valve built to accept most common actuator bolt patterns for wide range of spring pressures.

 

 

if this is truly "0 delay," this is really neat. No matter what, the electrical units will never be zero delay. They'll always take time to open/close. If they can slam this one open/close, it has my vote

 

Very interesting. I wrote a few posts in another thread about some of the stealth advantages of using this kind of setup with turbos. I still think it makes a lot of sense from a streetability perspective even if the performance advantages are a little questionable.

I also wonder how much the C6 Z06 cutouts cost? I think GM has set them up with a TPS switch, right?

 

noob, I believe the new Z's cutouts only function above a certain RPM as well.

 

 

I remember that... went all over the net trying to find this but had no luck since I couldnt remember what it was called at time.

 

You could do that pretty easily with this one as well.

Solenoid and an RPM switch.. BINGO.

This would be very LOUD at WOT.. looks pretty cool though.

 

wow!!

arnel the difference with my cutouts open is dramatic(power and spool).

listen to my vid, not that loud at all. i'd say its quieter then h/c w/b&b prt FOR SURE!

flickin the switch is no biggie, plus i can open partially

 

Where did you find those at?

Would be something fun if they were not overly expensive.

 

certainly easy to do, I was just saying I think that's the way the stock Z's are built.

Basically, you could have a number of switches, not unlike a properly setup nitrous system.

WOT + window switch + HOBBS pressure switch = it'll only open when you're foot is on the floor, above a certain RPM, and making a certain boost pressure. Granted, if you're foot is on the floor and you're in the RPM where you'd be making boost, there's no reason for the pressure switch, IMO. Although, this idea works best with something like a QTEC because they are electric. The solenoid + a window switch would work nicely

 

I wonder if the difference is as great running a catback like a stinger? First thing is to remove the cats and see if I could live w/o em. It'd be great to put the cutouts upstream of the cats.

 

If you use shorty headers or stock manifolds you might have room but with long tubes, there's very little straight run of pipe to put a cut out in. That was my plan before I got to looking at things. With a turbo system though, you can probably find a spot.

 

yeah w/those ones u posted you could mount them right after pre cats i am guessing that those cats are going to make a huge difference when they are gutted.

i drove my car around with NO x pipe on one night!!! u could hear the turbos 2 times louder then cutouts open.

 

Where were these at? Never posted an answer.

 

I could be wrong, but I think this system is activated by the same vacuum source that you would use to operate your wastegates, this would explain why there is no lag time to "open".
I remember reading an article on this system.

 

For what it's worth, my point was that GM has already figured out how to make cut-outs work it would seem. The cut-outs on the Z are made to open at WOT, so they must be good for a lot of open/close cycles and they must also open/close pretty quickly. Any RPM/TPS switching is probably done outside of the cutout.

 

Those things are pretty neat.. BUT $285 a piece... WHOA.

Too much for that noise.

 

Yea but... I didn't think the electric version was that significantly less.. Also, if the difference is significant.. say 40/50 hp then relative to other mods it's not so bad.

Arnel

 

arnel MORE...