BISS 420a

[redeclipse7782]

I have a star stage 2 turbo on my 97 gs 420a engine. I was wondering if there BISS screw on a 420a throttle body? My car idles at 1000-1200 rpm's and if i shift into neutral while driving my rpms go to 1500 and do not drop down. This also happens when i come to a stop then after a couple seconds slowly drops down to 1000-1200. If anyone has a picture of a 420a throttle body and where the BISS screw is it would be greatly appreciated.
Thanks,
Brian

 

[green95hrcgs]

NO. There is no BISS screw as there is on the 4g63. Our idle is determined by the ECU/PCM.

Try putting your foot under the gas pedal, and lifting up. It could be that you throttle cable is sticking. It has happened to me a couple times.