how to Dyno a AWD 996TT on a 4WD Dyno Jet
You MAY be able to remove the drive shaft from the front differential. There is a bracket you have to remove and then three bolts connecting the driveshaft to the front output shaft of the tranny. From there you'll have to find a way to move the driveshaft about four inches towards the rear of the car in order to have it come all the way out of the front differential. I am not sure that you can do it this way as there doesn't seem to be anywhere for the driveshaft to go backwards, once its loose. Sorry I couldn't be of more help.
You MAY be able to remove the drive shaft from the front differential. There is a bracket you have to remove and then three bolts connecting the driveshaft to the front output shaft of the tranny. From there you'll have to find a way to move the driveshaft about four inches towards the rear of the car in order to have it come all the way out of the front differential. I am not sure that you can do it this way as there doesn't seem to be anywhere for the driveshaft to go backwards, once its loose. Sorry I couldn't be of more help.
so i have to remove the under tray cover in order to remove the shaft

i hate it too.
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It comes out very easily, once you remove the cover and the three bolts (there are six there but only the three that hold the forward shaft need to be removed. One those three are free wiggle it loose and there is plenty of room to pull it out of the front differential.
Once the shaft is out you certainly can run it safely on a Dynojet. As Stephen mentioned above you do not want to run it in 4WD mode as they are not coupled. Once you undo your front drive-shaft it is a different story, no problem. You may want to leave it out for a while, you may like it. Many do not put it back, and end up removing the rest of the all wheel drive components. There is no harm to the electronics or mechanicals to leave it disconnected, everything works as before.
Once the shaft is out you certainly can run it safely on a Dynojet. As Stephen mentioned above you do not want to run it in 4WD mode as they are not coupled. Once you undo your front drive-shaft it is a different story, no problem. You may want to leave it out for a while, you may like it. Many do not put it back, and end up removing the rest of the all wheel drive components. There is no harm to the electronics or mechanicals to leave it disconnected, everything works as before.
Mine did just on the dyno...please explain why yours did not....I would think that at some point, power would be transfered to the front and there would be nothing there? Wouldn't you get PSM/ABS lights?
Seriously not trying to start anything, just want to learn....
Seriously not trying to start anything, just want to learn....
I could just be forgetting but I dont remember any lights coming on especially on the track other than when it normally would have come on, during a slide or hard cornering. But I'm positive it didnt come on when I dynoed it.
The PSM or ABS light almost always comes on when dynoing as the cars ABS senses that the rear wheels are turning at an unsual rate compared to the fronts which are not turning. Every car I have dynoed that has ABS (no matter what the manufacturer) the light will come on. Once off the dyno as soon as you start the car and drive even a few feet it resets the ABS light on its own, there are no codes to clear.
I disconnected my front for 6 months so I could dyno over and over easily and drove it around daily without any codes. You should not get any codes on a 6 speed car.
I disconnected my front for 6 months so I could dyno over and over easily and drove it around daily without any codes. You should not get any codes on a 6 speed car.



