This, a million times this. Guys, you cannot compare data between dynos done in different places on different days by different operators as there's too many variables. It's irrelevant if the RST dyno over reads or not, as it will still give you the true bump in power between the first run done before the map and the run done after.
While this is true Dan, it is confusing to me (and probably Dave too) why the run at SRR is back down to near stock figures, after it had the initial stock run and remap run at RSTuning.
I'm not saying that RSTuning are no good, but maybe more explaining for us newbies would help for clarification sake.
Assuming that SRR and Weston did not allow the car to climb the rollers the difference between the two will be the HP gains, you can't compare the torque unless the ignition tacho was used as this directly affects the displayed torque reading.
If he wants to run again i will but as said comparing dyno to dyno is not reliable unless everything is done exactly the same.