My god someone "squished" the air fuel chart on that last dynojet post. You sure can barely tell whether it's more linear or not.
And Dan, air fuel is flat on yours because it's scaled 0-50.... it squished it down also.
Granted, both are probably linear even when scaled so that you actually can see. I'm just bustin balls!
Has anyone considered the fact that this could have been a downshift? Not running in the 1:1 ratio ought to skew the numbers a little bit, and do some funky things air/fuel wise.... this is almost identical to what happened to some of the more "beginner" custom tuning dealers with the Mustang 5r55 before someone explained how to lock the cars in gear.
I think that it's been said by quite a few professionals in this thread. Put the car on another dyno. I'd be willing to bet your results look normal. Make sure the car has fans on it, run it in the proper gear. Give the car cool-down time, too. Try to run it around 175-185 degrees. The lower the IAT's, the better. Not low enough IAT's where it will skew the results, but keep them out of the range that would pull timing. If the pull seems to short, or too long... have him datalog, too so that he can ensure you're actually in the correct gear.
Tell your tuner to take your printout, and add another graph with "Gear Ratio" which is essentially RPM/MPH.... I'd be also willing to bet it wasn't run in the correct gear.
That would knock the numbers down, and then with Standard Correction (STD) it would bring them back up to the point where they just seem a "little low".
I would take the car to a more experienced shop. James @ RWTD or Doug @ Bamachips might be of assistance. RWTD is in Mobile. Tell him Chris Rose from Tillman Speed sent you down.