DrJer

Active Member
Jul 23, 2012
188
2
Swift Current, Sk
VetteCoins
600
Car
1997 Coupe
Arun/Manny, have you guys done this yet?

I'm thinking that with a centri blower, we should be able to pulley it down (ie. 3.2" vs. 3.7") to build boost quicker, then regulate the max boost with a wastegate setup similar to turbo cars. Poking around on the internet this seems possible. It would be even better if it were adjustable so if I ran it wide open at 15 lbs but could step it back to 12, 10, 8, 6 etc. for street/different tracks/drag strip etc.

1. Is this a possibility?
2. If it were tuned at max boost, with the wastegate activated would it need a different tune?

Street? 6 lbs. Drag strip? 15 lbs. Autocross? 10 lbs Road course? 9 lbs.

Thoughts?

Vortech Centrifugal Supercharger Wastegate Install - Muscle Mustangs & Fast Fords Magazine

^ pls forgive the blue oval post
 
It can be done, I know of several guys doing it.

Infact-I may do this on my own car since my new setup should be pushing 25-30 psi.

The only thing you would need to do is convert the car over to SD(Speed density)-unless you have a 2010 and newer pcm then it can all be done through the MAF with it's extended range.

The speed density tune would allow you to go up and down in boost without affecting the tune, since SD gives you a x amount for fuel for X amount of boost.

You would need a wastegate and controller such as the AEM.
 
Would there be such a think as boost control for each gear you are in? Say, 6 lb first, 10lb second, 14 third, etc? Just a thought on being able to tailor the hp to the max available traction.
 
My car is currently tuned off a 2-bar MAP sensor (SD tuned) and has the MAF removed (HP Tuners in the stock computer).

So just the wastegate/controller setup?? And the current calibration should be able to take care of less boost - correct?

Obviously the plumbing is important to do correctly - which is the tricky part then?
 
My car is currently tuned off a 2-bar MAP sensor (SD tuned) and has the MAF removed (HP Tuners in the stock computer).

So just the wastegate/controller setup?? And the current calibration should be able to take care of less boost - correct?

Obviously the plumbing is important to do correctly - which is the tricky part then?

If the car is properly 2 bar tuned then you can dial the boost down and the fueling will be correct.

The hardest part would be to get the wastegate the controller to work perfecty. There would be some trial and error-but eventually you'll get it bang on.
 
Would there be such a think as boost control for each gear you are in? Say, 6 lb first, 10lb second, 14 third, etc? Just a thought on being able to tailor the hp to the max available traction.

Riley-unfortunately we could not do boost by gear with the stock pcm-but there is another upgrade.

Last year Haltech released there Sport 2000 standalone for C5/C6's. I am actually the first in Canada to receive one. I did not get around to installing it last year but it's on our "to do list" at Dasilva's.

With it I can do boost by gear and so much more, it offers full wideband feedback and closeloop wideband. Meaning I tell it the AFR I want it to run and it will command it.

I can also build in several safegaurds-like if the AFR leans out-it can shut the car down-same for methinjection-if it fails-it can pull out power. And not from a IAT increase-but a decrease in pump pressure.

There are so many inputs and upgrades. EGT tuning, logging, nitrous, boost by gear, wastegate control, etc, etc,,,,,,,
 
Really the smart thing to do is to buy an efficient blower, pulley it properly, and live with the fact that you have a certifugal blower and not a roots, or a turbo. That's it.
 
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