A competitor of yours did find that heat soak did kill off power under certain conditions (239 rwhp vs 271rwhp on the first pull) so yes you could say that I find your "baseline" pull as suspect. I don't doubt your final power numbers but I do think it is irresponsible to mislead people into thinking that they are going to gain 100hp over stock with your tune in its current state.
It's your business, do whatever you like.
http://www.mustang6g.com/forums/showthread.php/americanmuscle-2015-mustang-4280.html
Someone else having a happy dyno does not mean we are sandbagging. If you'd like I could show you the heatsoaked run. It didn't even break 180 on our dyno. The baseline we showed is the best average and repeatable run. Unlike many others, we compare before and after numbers with all things being equal. Coolant temp, act1, act2, and of course as similar weather conditions as possible.
I can give you a long list of cars that er have hundreds of baselines from that people say sound low. Our dynojet is one of the first dynojet dynos ever built, and it consistently breaks hearts day in and day out.
A recent example was a ford raptor we built, it made 542 RWHP std at our shop, and then when he got it home he took it to a local shop for a dyno day. Fully heat soaked from driving there it made 577 RWHP sae.
We've been around far too long and have way too much integrity that has been proven over the years to do something so childish as to cook the numbers.
If you're ever in Michigan, bring your car by. We'll dyno it for free just to show you how low our dyno reads so you can see we're being honest, as we always are.
Remember, were not some fly by night shop. We have an incredibly long pedigree in the OEM world, and are an OEM supplier.