SRT-4aKId said:
I'm not feelin' the gauges. Looks nice though. I hear that the SC is already running at max boost from the factory? So I guess buying pulleys, and keeping up with the stock SRt-4's isn't happening, or am I wrong? Very nice car.
There is some room to grow with the supercharger. There has to be some other factors taken into account first. The injectors are near max, the Mass Airflow sensor is about maxed, and the Manifold Pressure Sensor is about maxed. The supercharger is spinning around 11,500 rpms to the best of anyone's knowledege here. 1:85 ratio pulley at 6,450 redline. The manufacturer's site only shows test results for up to 14,000 RPMs. There is ALOT of room to debate what the limits of the device are. We have a few GrandPrix owners at the Redline Forums and they claim to be spinning their M90's WELL in excess of that number. The biggest issue there is, will the increase in heat offset the increase in boost pressure. Also, with the Manifold Pressure Sensor maxing out at 14.7, that needs to be upgraded to read the higher boost levels so the computer can keep fuel control.
Personally,I feel there is alot of room to grow. I don't think GM would send out an engine that is able to handle between 400-700 hp on mainly stock internals, and not provide any room to grow. If you look at that Cobalt 272 that was at SEMA, they claim to have got that HP with NO major engine work.