Post the shop Nick!!! LOL. I have a feeling I know who it is. And its funny you should have this problem because I'm waiting to get my car on RAD's dyno because me and about 10 other people think there is something wrong with my cars tune I.E Running really rich. And I'm curious to know if its the same shop and if it is the same shop there is another member on this forum that had to have his Z retuned by the same shop because the car started to run really rich again.

I've heard of a similar issue from several people in that area, I'd really like to see the rom file to see what that shop is doing...

You mean the shop with the really high reading dyno? :stirthepot:
If it is, then I think I've been there before, but luckily not to get any work done :p

Sorry to hear that nick

Its definitely not the same shop. This was in Westchester. You're numbers are extremely high! 339whp bolted? somethings up.

Numbers between dyno's aren't comparable. Different dyno types give different readings, Mustang and Dyno Dynamics read the lowest but are good for tuning because they are dynamic load dyno's. Dynojet's tend to read the highest but are inertia dyno's of fixed mass and don't give as much tuning flexibility. 280 on a Dyno Dynamics could be 330 on a Dynojet, so quoting WHP numbers without context on where they came from is pretty meaningless. Even a given dyno type can have fairly varied reading between different shops depending on how well it is calibrated.

Sooo how do u explain 339 on a mustang?

Different calibrations are possible. He could go do a different mustang dyno and get 300.

This is true

Once RAD has the dyno up and running I'm hoping to get more accurate numbers and fix my possible tuning issue.

Let me know what day so i can bring mine in too lol. We can just keep hitting the "RAD" button on the vending machine :happydance:

Lol ok.

Lansdale PA about 30 min Northwest of Philly

I'm calling you tomorrow to set up an appointment. :tup:

Nick what was your base whp and your tune whp?