Need some help. Project needs a baseline TQ and HP of current mods on a 996TT EVO stg 2. On a Mustang Dyno-4 wheel dyno, do the front wheels spin? Do I need to disconnect the drive shaft before the run and dyno the rear wheels only? Car does not show any ABS or PCM error codes. Any help would be great. Thanks in advance.

 

If the dyno is a mustang 500se, like the one below. Make sure the shop locks the front rollers to the rear rollers, so they spin at the same rate...and you will be fine in AWD.

 

Thanks. I will check first. Do you know what the differentials are supposed to do? Do the front wheels not get driven until slip is detected in the rear? And if so, is 40% of the available torque available or less? This would explain why the front wheels don't spin if the dyno was not locked front to rear...maybe?