RAM Cummins CSP4 SwitchCSP4-S
At first with the tow mode I was impressed with the throttle response ,then not knowing what to expect when I changed my tune and oh boy watch out it became a hand full all at once felt sorry for these people that don't do their home work before they got gaped.thanks for a great product.
WHO IS THE TUNER/CALIBRATOR
PPEI, also known as Power Performance Enterprises, Inc., is led by the business owner and lead calibrator/tuner Kory Willis. PPEI began calibrating/tuning back in 2008, specializing in Diesel Performance but has since expanded into the Gas and Powersports industries. Kory and the team at PPEI have set many world records along with continuing many industry “firsts”. We take pride in knowing that Kory not only prides his work, but also thoroughly enjoys setting expectations high for our team so our customers can have the best products available in the world.