for those that are in the dark its the turbo thats exhaust housing changes to produce amazing control over boost levles. I know minion was talking about it I just wondered if it was ever done.
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Kick azz is my boost hero!!! 
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A buddy of mine has a Daytona Shelby with the VNT (Variable nozzle turbo). It's great because it's like having a smaller housing for quick spool at low rpm and a bigger housing for big boost at high rpm. I thought it was a sweet idea so we gave serious thought to boosting my Cavalier with one. We started doing the research, tracked down part numbers, etc. and hit a brick wall. Apparently the vane pitch is electronically controlled somehow and we couldn't figure out how to make it work so we gave it up.
bummer. yeah if the idea ever catches on, im sure that someone will make a control unit.
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Kick azz is my boost hero!!! "
I know Garrett has been making them for a while now. You might be able to find an aftermarket kit with the controls and everything. It's a long shot but if you really want one...
I think Jcavi is talking about the ones that actually alter the angle of the vains inside the turbo
their already being used. Search on e-bay for them. You'll find them in diesels and some smaller 4-cylinder expensive vehicles.
Typically its controlled by an actuator on the turbo housing
-Chris
IamRascal wrote:I think Jcavi is talking about the ones that actually alter the angle of the vains inside the turbo
their already being used. Search on e-bay for them. You'll find them in diesels and some smaller 4-cylinder expensive vehicles.
Typically its controlled by an actuator on the turbo housing
Correct. Garrett has been developing the VNTs for turbo diesels in the UK for a few years and I remember going to one of the SR20 forums and they were getting pretty popular with that crowd. I think they're the same as the VNTs that Shelby used for the Daytona and Shadow CSX. And if I remember correctly, the actuator is controlled electronically somehow but I could be wrong. I know when we were trying to figure them out to use one on the Cavalier we had a lot of unanswered questions as to how we can make it work. Maybe we were simply looking in the wrong direction.
