Thinking about adding a programmer for better fuel mileage (not really into hot-rodding it) since fuel is staying up these days and will probably go higher this summer.
Googling the subject gives me a headache trying to read all the he said-she said replies and search here was very productive as usual. I decided to ask here for real-world experience from folks I trust.
So what say you?

Tim


'71 Charger 383/727
'17 Challenger SXT (Wifeys car wink )