When getting the hellcat dyno'd tonight the best out of 4 attempts was 450 hp for some odd reason. Traction control was turned off, but abs was kicking in and wouldnt let the hellcat max out. Does anybody with dyno experience or hellcat dyno experience know how to get the abs system to not interfere? Might be a dumb question, but it's the first time i've ever had a vehicle dyno'd. Everytime you could smell the brakes.
Even with driver error, mph should be relatively consistent... driver will effect the ET more than MPH in most cases..and mph is a direct reflection of what kind of power the car is making.
I want to goto the track often as well but the driveshaft issue concerns me. I have a '74 Camaro with a 427 4-speed that rung the driveshaft off. It looked like it had been cut with a plasma cutter. That still haunts me.
We put it in track mode with the full 707 hp enabled and held the traction control button for 10 seconds turning it off, but it still didn't work. You could see sparks in the rear tires during the attempts. I'm not aware of how experienced the tuner was operating the car during the dyno, but every other car there went fine.
As already mentioned, it is not the TC kicking in, it is the ABS. The front tires are not moving but the rears are at a high rate of speed so the ABS tries to intervene and cooks the brakes. Pull the ABS fuse in the front panel and it will be fine.
This also has the side effect of disabling TC and ESC. This is also why on on-board Hellcat dyno videos you will see the TC, ESC and 'BRAKE' lights illuminated.
A decent dyno operator should already know this and would have saved you from cooking the brakes.
As already mentioned, it is not the TC kicking in, it is the ABS. The front tires are not moving but the rears are at a high rate of speed so the ABS tries to intervene and cooks the brakes. Pull the ABS fuse in the front panel and it will be fine.
This also has the side effect of disabling TC and ESC. This is also why on on-board Hellcat dyno videos you will see the TC, ESC and 'BRAKE' lights illuminated.
A decent dyno operator should already know this and would have saved you from cooking the brakes.
For some reason the dyno operator was really set on shifting the car himself. He said if he pulled the abs fuse he wouldn't be able to shift so we never tried that. I'm very new to the dyno as you can tell I didn't know any better.
Pulling ABS fuse only disables ABS, TC and ESC. It should not affect the ability to shift. I think you may want to take your car somewhere else before he forgets to strap it down or something.
Pulled fuse 5 and 6 from the under hood. Disabled abs, dyno pulls fine. Even with torque limiting turned off in the tune and fuses in, rear abs kicked in (i also have. 450hp dyno pull) now after replacing fuses, i need to clear abs codes to get lights off...
Serious Horsepower in Houston should be able to help you. Give them a call and talk to Jerry. You could also call Livernois in MI and ask them as well. Both places are on point with their dyno skills. Good luck.
^ what he said X2.
Must only work correct in MN on Sunday's with a full moon approaching with negative D/A. Sure worked for us, Speedman was able to log 197 mph. No sparks I was video taping him, I logged a beastly torque number while Speedman watched my lack of sparks.