ive been thinking about buying the GM stage 3 PCM. Mainly for the 100 octane tune and the 50 shot tune. Just got some questions.

How easy is it to switch between 93 octane and 100 octane tunes? Is it a button or something?


How is the dry shot tune activated?


Ive already heard that you cant tune this PCM, but is there any beliefe that you might be able to in the future?


Also post your own Personal experience with the PCM, likes or dislikes. I only want to hear from people who have or currently use the stage 3 PCM in regards to opinions of it.

 

the tune is in the pcm.. nothing you have to do but swap out the ecus..

by itself i dont really see the point.. why not just Tune your current pcm with the settings for a 50 shot... the Stage III setup (50 shot) is not even a wet kit so its not even a true 50...

 

Ive been 100% happy with mine. To change the redline and the 100 tune is realy eazy. I also hope that someone someday soon will crack the tune on this pcm. Also i noticed the the car drives smoother and my gas mileage has gone up with no change to my driving.

 

https://www.cobaltss.net/forums/nitrous-oxide-51/nitrous-gm-stage-3-a-56311/

there's a big discussion on this ^^ thread, something like 304hp