MikeG

iTrader: (33)

You have to get that OBD2 port wired up ASAP, it's the whole key to letting you know what's going on with the engine. In the meantime I would check the plugs while you do compression/leak down tests. Also make sure the throttle body is opening all the way under WOT.

redtan

iTrader: (5)

Seeing how the dyno run was done in the wrong gear, the results are basically pointless to compare to anyone else.

Go get it done in the right gear and then we can say whether your engine is running right or not.

RealQuick

iTrader: (14)

I won't use a shop that doesn't let me run my own car.

mattster03

iTrader: (22)

Where are you experts getting this information from regarding dyno results being significantly different if you aren't in a 1:1 gear? It will make a very negligable difference running on a dyno in a any other gear. Think about it this way... when was the last time you heard of someone dynoing significantly higher with 4.10 gears versus 3.42's or visa versa? That's pretty much the same thing as having the car in a different gear. There will be very small differences due to friction, etc. but we are talking in the 1-2% range... nothing near what the OP is experiencing.

_Adrenaline_

iTrader: (4)

When i ran my GTO on a Mustang dyno, i did 3rd and 4th gear. The difference was 432/440hp it makes a very small difference.