More than happy to help. I have done a lot of tuning on the Hemi,s using various methods. My turbocharged 5.7 Hemi uses pulse width modulation of fuel injectors directly, divorcing fuel from the factory ECU. Timing is easy up to 9 degree retard using signal delay, clamp on stock MAP sensor voltage, pulse width modulated closed loop feedback circuit boost control, progressive water/meth injection, overboost alarm, all from a single unit. I know I could tune a Crossfire, just never had the time, and have had one since new in may of 05!