Dan, Thank you for a great product. This upgrade is a plug and play mod. Dan made me a custom program for our highly modified test mule ( Viper ), and put it in a new ECM so we could retain the old one for EMISSION TESTING and FOR WHEN YOU HAVE TO TAKE YOU VIPER INTO THE DEALER FOR WORK TO BE DONE. This is very important as the dealer has a bad habit of downloading any new updates into your car when it is in for service. If he does this will overwrite Dan's program. All you need to do is spend 10 minutes swapping the ECM's over when the car is cold. The one thing you need to do before installing Dan's program is to install a new 180 degree thermostat as he reprograms the temperature so that the fan comes on at a lower temperture and make it cycle longer.
The car runs much smoother.
The car run quiter.
The engine temp on a 90 degree day never gets above 185.
The oil temp on a 90 degree day never gets above 200 even with the A/C running.
The car ia a hole lot cooler when the A/C is running as the engine coolant is cooler making the engine run cooler therefor you get cooler inside the car.
The car no longer has any popping when you let off on the gas.
The car has a very smooth acceleration right to red line and is much smoother and sounds better than the stock ECM.
I have found that my fuel mileage has increased a little bit to.
The car has a lot more jump to it when cruising and flooring the gas. Same holds true for mid range accelerations.
We find that now you can drive in 5th gear or 6th gear the the car really pulls when passing ba slower car.
I would recommend this modification to everyone as you get a side benifit of have your A/C controled by the ECM. With the Mopar Performance Module there is no provision for the A/c.
Again Dan, Great job on this upgrade, it is tops on my list.
If anyone has questions about this product, or needs help specing it out or installing it, please feel free to call me.
Robbie