Here at RP we make a solid 519HP & 522TQ on this bolt on set up with our tune. (Tune module will be available here in the near future.)
Disclamer: RP does not build kits for the highest numbers. We develop tunes, hard parts and packages with in a series of goals. Where you will see and feel power differences the most between each stage, is when power comes on, when and how long it lasts.
1. Reliability and Longevity. Because if you car doesn't run, its useless and expensive.
2. Power delivery, linearity and delivery.
3. Installation and OEM fitment of all parts.
Support: You can call and text James Renick direct for installation and questions anytime at (714)345-5926