how to get more power out of a stillen supercharger kit?

dal1307 · 05-20-2011, 09:24 AM

Quote:

Originally Posted by RCZ

Ummm I'm making 455whp at 9psi with a custom tune. Otherwise its an out of the box Stillen supercharger kit. If anyone has any doubts, my car trapped 121MPH last night at the track. For comparison, the 2012 GT-R does a quarter mile run in 11.0@122mph.

OP, don't listen to all the people in here talking trash to sell GTM products. Notice how they have no real suggestions to help you, they just want to criticize the stillen kit and bring you down.

I am planning on getting the 928 Motorsports impeller soon. I think it will add a lot of midrange torque and some high end power with the increased volume. I wouldn't be surprised if PSI went up due to the flow. Probably bump me up to 470whp.

RCZ is right. I have no complaints from my kit and my review speaks for itself. I just wish I lived closer to sea level! I am hoping to be able to replace my 9PSI pulley and get up to 8 PSI of boost at altitude. I am currently trying to determine what RPM the blower is turning with the 9PSI pulley to see how close I am to the 52K upper limit. That 928 motorsports impeller also looks promising but would cost a bit more than a pulley swap.

Mr.Squeeze · 05-20-2011, 10:41 AM

Quote:

Originally Posted by dal1307

RCZ is right. I have no complaints from my kit and my review speaks for itself. I just wish I lived closer to sea level! I am hoping to be able to replace my 9PSI pulley and get up to 8 PSI of boost at altitude. I am currently trying to determine what RPM the blower is turning with the 9PSI pulley to see how close I am to the 52K upper limit. That 928 motorsports impeller also looks promising but would cost a bit more than a pulley swap.

There is no way for you to know how close your are to the limit of the unit without having cog pulleys.In order to find out how fast you are spinning the blower you have to put in the crank pulley size plus the supercharger cog pulley and jack shaft cog pulley ,and use the impeller speed calculator on Vortech web site..This is the one of the reason's I made the switch to a cog set up.With the 928 motorsports impeller you can spin to 60k up from 53k.

Even with doing all of that there is still some belt slippage that you can not account for from the serpentine belt on the front.

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