I had Lonnie make a tune for me years ago. The car ran a little rough when cold, but ran OK once warmed up, and performed well, and while his customer service was a bit lacking, I let it go thinking I had a good tune, and knowing I was supporting a fellow MN12 owner. Years later when my buddy got a quarterhorse and he and I started messing around with stuff, I decided to see what was actually done in Lonnie's tune. Basically on the factory setup, or a good quality custom tune, there are multiple tables for each parameter to allow for adaptation as things change like outside temp, coolant temp, elevation, etc. What did Lonnie do? He zero'd out EVERY table except for the base one, so the car ran with the same spark and fuel parameters regardless of conditions. Basically he cheated so that the car would run good under ideal conditions, but whenever anything got outside of those conditions, the car could not adapt like the factory setup, so the car would run great at the track or on a dyno, but would have drivability issues in the real world. This is something that you wouldn't know, unless you had the ability to look at the actual tune, but he was basically doing probably 1/10th the work that he should have been, and charging the same as everyone else, and when people complained about drivability, he didn't want to say "well my tune can't adapt like the stock one", so instead, he would blame it on mechanical issues. Now, having seen what is involved in tuning, and having seen what the actual product I received was, I would tell everyone to steer clear of Lonnie.
-91 Cougar LS, coming soon, complete overhaul
with a 427" Windsor.
-90SC 5-speed, MP2, coated rotors, double intercooler, 15%OD, ported heads, comp stage 1 cam, 85mm TB, 90MM LMAF, 80# injectors, soon to be transplanted into...
-90 XR7 5-speed black on black w/sunroof
-98 Mark VIII LSC, Procharger P600b, TR3650 swap and 3.73s.
-70 Torino GT Fastback project car. Needs EFI and a manual trans, but I'm not sure what motor to go with yet.
-"Your buddy Mike is INSANE!" -ClintD's dad