This is a little older thread, but I use Wengerd, and have a flex tune from him. I run dedicated e85 though and just use the flex for a tank or two if I am switching fuels.
I have a ported Gen3 intake on my car along with longtube headers and a pmas intake plus e85 tune and obviously injector. I ran on the dyno and was basically 375+ rwtq the whole run to 400 peak (450hp/400tq) and I forgot to tell the dyno operator my limited was at 7700 so he was cutting it at 7k...
205/78 is pretty much on my daily route, haven't gone there yet as I just got tune and switched over to e85 this tank, my tuner told me it will run on 60+ but 70+ is preferred so I will check out that Racetrac and test.
Wanted to do the Kroger the first because have heard it was the highest...
I just got my car a month ago, already had all supporting mods for E85 so got a tune for it, only been running it for a few days now and haven't tested many stations but tested and filled up at the Kroger at Hwy 78 and Murphy Rd the other at 90%. Have been hearing that Krogers have the best so...