Ok, so here is the latest (bare with me). I scheduled an appointment with Cobb Tuning Plano to look into the map discrepancy and to get a baseline for my car. Cobb replaced my K&N panel filter with one of their own for the test and left it in there free of charge. Kudos to them for that!
So, with that said... (takes a deep breath)... I am *VERY* disappointed with my "stock" numbers. According to their dyno my car only makes 182 hp and 227 pft torque at the flywheel (a whopping 15 hp less than Fords advertised rating). The torque is quite good though.
Either the correction and input factors on the dyno is uber conservative (Mustang dynos notoriously net lower numbers than Dynojet dynos, that is just a fact), OR my car has an UNUSUALLLY high driveline loss (highly doubtful), OR my car is just a complete "DUD". I have never seen such a low "horsepower to the wheels" number on a Fiesta ST anywhere in the world (and I have seen over two dozen different dyno runs on 2-3 different types of dynos) for this application. The number spread between all those dyno runs is less than 5%. I think I will have to seek a second opinion (and dyno my car on a Dynojet 248E just to get a comparison). :biglaugh: Also, I was a bit disappointed that I was not provided with the best 91 map dyno run to compare with the 93 map dyno run (is it a state secret?). I can't compare the two tunes curve for curve to verify which one is truly "better". I was only provided with my best run (they did about 10 dyno runs total). But... I'm not going to complain since they did my baseline for free. :meh: My best Cobb tuned run, supposedly on the 93 map (I really don't know for sure) netted 172 hp & 247 pft torque to the wheels. The "tuned" wheel horsepower number is on the lowish side of a bone stock car and with an estimated driveline loss of 12%. That's approximately 192 hp & 276 pft torque @ the flywheel (good lord that's some beefy torque!!!). They did do some OAR adjustment running to get -1.00 on the timing advance learning. Anyways, that's where I am. :whistling: