mejohn50
Intergalactic Snail
- Joined
- Jun 12, 2016
- Threads
- 22
- Messages
- 550
- Reaction score
- 508
- Location
- United States
- First Name
- Mitch
- Vehicle(s)
- slow junk
- Thread starter
- #1
Hello,
Thought I would share something I have been working on for a while.
I have a 2019 Mustang GT 10R80 with a Whipple. I typically run around on summer only street tires, but the tires are still no match for the power this thing makes in the first few gears. Depending on the weather, the pulley I am running, and the fuel I am running (pump gas or E85), I can spin the tires from a roll up to fifth gear. I have wanted to get boost (torque) by gear working on this but the Whipple OS seemed to make the intuitive options not work properly.
After testing a few things and working with one of our incredibly knowledgable forum members (@engineermike), I got it working...and it's hilarious. I can finally go WOT in any gear from any speed on my street tires without traction issues.
As you can see from this screen shot, at WOT (light blue line) in second gear it is limiting the torque (white line) to ~400 ft lbs. You can see that first gear is lower and third gear is higher. In this data log I had it set to 300 ft lbs in first, 400 ft lbs in second, and 500 ft lbs in third. You can see load (pink), torque (white), and throttle blade percentage (yellow) increase with every gear change corresponding with how I have the torque limits set in the calibration.
This is nowhere near fully dialed in. Each gear can take more power, and as you can see below it is also based on RPM, so I can really dial this in. This was a guess at how much first gear could take and then an increase with each gear change for testing purposes.
There are several limitations or possible issues that need to be contended with to make this work. For starters, the way the stock Mustang GT (and most all other V8 Mustang calibrations including Whipple) control the throttle blade for WOT operation is very simple. It basically ignores the driver demand table after a certain, calibrate-able, throttle pedal percentage. In order for torque by gear to work, the driver demand for WOT needs to be configured more like an Ecoboost, where it uses the driver demand table at WOT rather than ignoring it. The second limitation is that it only works through 6th gear, which I assume is a left over from either the 6R80 and/or the MT-82. I don't see this as a huge issue, becuase as you can see in the below screen shot I have it maxed out by fifth gear, but I guess some might find this limiting.
My next plan is to dial in the torque values more accurately for my setup, and then I am going to integrate this into one of my PCMTEC Custom OS slots so I can switch between a torque limited slot and a slot that has full power in all gears.
Thought I would share something I have been working on for a while.
I have a 2019 Mustang GT 10R80 with a Whipple. I typically run around on summer only street tires, but the tires are still no match for the power this thing makes in the first few gears. Depending on the weather, the pulley I am running, and the fuel I am running (pump gas or E85), I can spin the tires from a roll up to fifth gear. I have wanted to get boost (torque) by gear working on this but the Whipple OS seemed to make the intuitive options not work properly.
After testing a few things and working with one of our incredibly knowledgable forum members (@engineermike), I got it working...and it's hilarious. I can finally go WOT in any gear from any speed on my street tires without traction issues.
As you can see from this screen shot, at WOT (light blue line) in second gear it is limiting the torque (white line) to ~400 ft lbs. You can see that first gear is lower and third gear is higher. In this data log I had it set to 300 ft lbs in first, 400 ft lbs in second, and 500 ft lbs in third. You can see load (pink), torque (white), and throttle blade percentage (yellow) increase with every gear change corresponding with how I have the torque limits set in the calibration.
This is nowhere near fully dialed in. Each gear can take more power, and as you can see below it is also based on RPM, so I can really dial this in. This was a guess at how much first gear could take and then an increase with each gear change for testing purposes.
There are several limitations or possible issues that need to be contended with to make this work. For starters, the way the stock Mustang GT (and most all other V8 Mustang calibrations including Whipple) control the throttle blade for WOT operation is very simple. It basically ignores the driver demand table after a certain, calibrate-able, throttle pedal percentage. In order for torque by gear to work, the driver demand for WOT needs to be configured more like an Ecoboost, where it uses the driver demand table at WOT rather than ignoring it. The second limitation is that it only works through 6th gear, which I assume is a left over from either the 6R80 and/or the MT-82. I don't see this as a huge issue, becuase as you can see in the below screen shot I have it maxed out by fifth gear, but I guess some might find this limiting.
My next plan is to dial in the torque values more accurately for my setup, and then I am going to integrate this into one of my PCMTEC Custom OS slots so I can switch between a torque limited slot and a slot that has full power in all gears.
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