^^^I got rid of my Evo for the same concept. I went full bolt ons and a tune (granted, its nothing even remotely close to all you had done, nor was it in the shop near as long as your car was) and it ran like crap and was coming back to the shop every other month. CEL's, leaning out while idle, surging, pretty much all driveability went to ****. I returned it to stock and traded it in for a new Challenger scat pack which im keeping 100 percent stock, I was fed up with modding.
Now it sits here where it has been for the past two months....
Used 2012 Mitsubishi Lancer Evolution TC-SST MR in Manassas VA | Used Mitsubishi Lancer Evolution near Chantilly & Centreville | Stock: M50713A