the other way around, Pettys was using Arrington back in the hay days, eventually one of the tuners from Arrington as they where failing as a business went to Petty, good tuner, dont know if he is still thereSo as Toxic mentioned, Arrington sent me tunes via diablo sport. Although at that time I think they were using a 3rd party tuner (the tale I heard it was Petty's Garage :dunno: ). Shortly after they dialed in my tune the business was sold off and a couple of months later I installed headers (with high flow cats) which prompted me to update my tune. Since the trinity has very limited tuning capabilities I switched over to HP tuners and all I did was load the tunes with the trinity which I then read with HP tuners and then finally loaded with HP. Using my wideband and fuel gauge I was able to make the adjustments to PT and PE fueling that were needed.
Looking at the final tune from Arringtion in HP there were several things I did not like...for starters they deactivated my rear O2s and disabled a bunch of DTCs which prevented me from getting all the emissions monitors to pass. After trial and error I found the rear O2s didn't impact fueling (provided COT was raised) and I managed to enable all DTC monitoring without any issues. In fact, I was finally able to get my emissions monitors to all pass which is why I stopped messing with the tune as the car is due for emissions in October. Once I get the HC cam installed I plan on getting it finally tuned on a dyno but that will all happen after the emissions test.
many stories regarding the final days of Arrington, its a shame, at one time, they were producing great engines and builds