My numbers Mustang Dyno vs. Dynojet

[chad05gt]

Is this a common difference?

318hp/340tq Dynojet 3rd gear pull w/ tr3650

287hp/307tq Mustang 4th gear pull w/ tr6060

Is the large difference due to the dyno's or the gears they were done in or both... and then there is the transmission differences...??

 

[stkjock]

there usually is a difference... 8-12% is the common wisdom

but both pulls should have been in 4th a 1:1 ratio

 

[don_w]

I'd say both. The dynojet will generally give higher numbers. But doing a pull in 3rd gear gives useless crap numbers. I know this from experience.

 

[chad05gt]

Apprec.

Looked like some 'fuzzy math' b/s to me as well.

Thanks

 

[05mustang_TT_charged]

yep with the dyno calibrated for a 1:1 ratio the car needs to be in 4th gear since that is the 1:1 on these cars with the 3650 and 6060. the higher torque number is because the mutliplication in the trans is different. Cody knows all this and I am sure it was a 4th gear pull. We made 15 pulls on my car to get it right and they were all in 4th gear.

 

[chad05gt]

Correct...

Both in 4th gear, my mistake.

yep with the dyno calibrated for a 1:1 ratio the car needs to be in 4th gear since that is the 1:1 on these cars with the 3650 and 6060. the higher torque number is because the mutliplication in the trans is different. Cody knows all this and I am sure it was a 4th gear pull. We made 15 pulls on my car to get it right and they were all in 4th gear.

 

[Steedman07]

Ive heard of dynojets being more like 15% + higher than a Mustang dyno...