Does anybody know of a good tuner for older TBI PROMS? This past winter I swapped in a TBI 7.4L in my FIL’s 1993 C1500 Sportside. I modified the stock 4.3L harness to work with the 7.4L components and used Howell for the PROM tune. Now, I’ve had nothing but good luck with Howell on past projects but after 3 different PROM tunes I still don’t think they have this thing calibrated correctly and looking for alternatives. The truck runs great! We’ve put about 2,000 miles on it and it has tons of smooth power through all ranges, it will smoke the tires like mad but the problem is it likes to die when coming to a stop. It does not drop a SES light nor leave codes. I’ve swapped in known good IAC motors and just about everything else. Fuel pressure is spot on at 12 psi. I am convinced they have it programmed as an automatic rather than a manual transmission. I am confident there is not a sensor issue, air leak or anything else with this engine. It has to be an outright calibration issue. They did add a “hot tune” that I would like to get rid of as my FIL is complaining about the rich smell at idle as well. I am running a 1227747 ECM. I have an extra PROM but need a stock tune for a 1993 7.4L with a manual trans and 3:08 gears. Looking for a good alternative to Howell. Anybody got any suggestions? This truck is just a city cruiser driven by a 70 year old man, not a hot rod.