Ok well I turned my modshack stage 3 up to 4 turns and my car does not like it at all! When I step on it my DV sounds like its puking, it is very spitty and choppy. For a second, my CEL came on, but it only came on for a sec! Every time I step on it, It sputters! I dont know what the hell is goin on! Do I need to change out my DV spring or what!

 

Yes you do have to change it so that it will hold and release the boost better. I run the blue spring and it works like a charm.

 

i run the yellow.....

 

I have the yellow in now, I'll change to the blue and see how that works.

 

it may be becuase of the giac x software its very agressive

 

Whats the highest PSI you hit before it goes back to a steady 20PSI?

 

The highest number that I have peaked at was 24psi but that was just a single instance, most of the time with the weather changing and everything I will peak around 22psi then level off at 20steady. Hope that helps.