Is there an aftermarket product/system out such that you can set a certain boost level for a particular gear. I heard that the SRT4s have something like this that comes stock on their cars. I'm not familiar with how it is achieved on the SRT4, but I'd like to have one my car or develop one if it doesn't exist.

 

An AEM EMS with the gm boost noid will do this for you..

 

AVCR is a good boost controller, gear dependent and blings.