You can always get a NOS system on a pressure switch. Once the switch see's a preset ammount of boost it turns off the kit.

 

It's not the pressure that is the problem with this idea, even a modest 5psi would do the trick, it's the flow that will get you. You'd have to flow a good amount of air.

GT30R turbo spools at 4000rpm. At 4000RPM on the S2000 you are flowing around 200-300cfm of exhaust gas (depending on exhaust size there should be no pressure so 0psi). Now, find a compressor that can sustain 300CFM at even 1psi for any length of time, and make sure it's small enough to fit in the car. There are those who have used nitros to spool turbos, but these are drag cars, it's not really worth it for a street setup.

 

If you use some clever tuning you can reduce the spoolup time. The way you do this is by retarding the ignition timing in the areas of the fuel map where the turbo is off boost. What this does is burns the fuel in the manifold rather than the engine. Normally running retarded ignition reduces power, in this case you accept the reduction in power at those load points in order to get the MAP pressure increased at those rpm.

For example. If the engine is slow to get onto boost at 3000rpm, try retarding the ignition at the < 100 kpa parts of the table 5-10 degress.

This tuning is different to what most people do. Many tuners use a normally aspirated timing curve for MAP < 100kpa which is what you normally do to get the most power at that MAP pressure. Running retard at these points can help get the turbo to > 100kpa load points a lot quicker.

Give it a go.

Chris.

 

Get the right size turbo and you won't need any electric compressors to eliminate turbo lag. Turbo lag is really non-existant that even if all of this worked it would not be worth the investment.

 

I don't know but I been in Xclusive's car and that car spools quick lika mother.

by the time I spooled he had already 10 car lengths on me

 

That's not really a good way to do business on a street car. By letting it burn in that manifold your EGT are though the roof. Without proper heatshielding your asking for something to cook. Not to mention the added wear on the turbo from all that extra heat.

 

Yep...I wouldn't use an antilag system on a street car. There's a reason rally cars incredibly poor fuel mileage. Years ago I read that the old Mitsubishi Evo rally car got 3-4 mpg during the races and no more than 10mpg when cruising between stages!

 

[QUOTE=Scorpion,Nov 16 2006, 04:31 PM] That's not really a good way to do business on a street car.