I'm not sure if it was mentioned before but why don't you work with Procharger to get their tune and see how it runs on your car? It sounds like either a mechanical failure with the imrc's or the tune.. I'm guessing tune.
Similar issues with the Hellion kit, hence my thread on the tuning for 6sp manual cars. Process is describing it exactly the same way I would. Cept my throttle randomly decides to partially close at wot...:headbonk:
Yea it's a daily. I would not put any springs on it that lower the front end more than an inch.. After the kit is on the front end will drop another half inch, at least mine did.
Awesome man, are you on the Facebook group? I'll PM you.
Here's a vid I did of mine the other day. Still working on the tune but it's getting better and better!
[ame]