RPM Outlet RPMOutlet.com
Outdated programing to bad no return
I purchased a Diablo Sport tuner $385. It would not work at all for the 2008 duramax. I contacted rpm outlet which told me to contact Diablo. Diablo told me the tuner had outdated programming in it and had obiously been on the shelf a long time. I again contacted rpm. I told rpm all I want is up ...