Cobra dyno day

[cobred]

I have an apointment for a chassis dyno session on Saturday. My car was on a dyno jet 3 years ago and is now going on a mustang dyno. I have made a few changes since then but my main reason for this session is some timing tuning.
I'm curious if anyone knows the difference between the 2 dynos as far as what h.p. will show? In other words, will one read more or different then the other?

[MChat]

Mustang Dyno's typically read about 10-15% lower than a dyno-jet.

[undy]

I would not go on the Mustang dyno as you will not be able to make any reliable "before and after" conclusions on performance gains when using the 2 different dynos.

Dave

[cobred]

The reason I was going on the mustang was the shop with the dyno jet moved out of state and I only know of 2 other shops aroung and they both have mustangs. Tonight someone I know told me of a shop with a dyno jet so im cancelling tommorrows session and calling the other shop.

[Power Surge]

Ed, go to Joe at Mustang Magic.