I have added a hahn turbo kit to my car (everything is stock for r/t model). It went from 120 whp to 215 whp. I am pushing 10 psi with my boost controller. Are there any other performance parts i could add that would either add hp/torque or help my engine stay strong. I can not put in a bigger turbo because I feel like I am pushing the limit on my stock parts. A bigger exhaust wont help much because I already have 3 in pipes. Any help?