I had the NITROD for my srt4 and it worked great.When i sold that car and bought the srt6 it would not work.I got ahold of NITROD and talked to them about it.I took a pic of the pin layout on the port of the srt and sent it up to them so they could see what the difference was.To make a long story short they said they could mod mine to work with the crossfire if i sent it back to them which i did.When i got the guage back the car was already in storage for the winter but i went and plugged it in and it looks like everything will work fine now after they modified it.All functions seemed to work as much as i could tell without actually driving the car.Their customer service is top notch and the guage is very nice.I used the hell out of it on my srt4 and i am looking forward to doing the same on the srt6