10R80 - First Two Gears are SLOW

[WERA49]

My 2019 GT is stock, other than the dealer installed Roush supercharger. It has 20" wheels and a 3.15 gear.

When leaving from a stop, first and second gear have lower acceleration that I expected. In third gear the car wakes up and the front end lifts higher.

Will a custom tune fix that? Is this something that Roush builds into their conservative tune?

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[shogun32]

There's all kinds of ignition retard in the low gears. Ford calls it torque management

 

[luca1290]

And it's there to protect your gearbox.

Anyway you are already making a ton of power on that car, you will spin forever and ever if you try to put it on the ground on first and second.

 

[engineermike]

I dont think Roush intentionally limits torque in low gears. I have seen false knock make it seem that way though. You’d need a good log to know for sure.

 

[wazslow]

Are you sure traction/stability control is completely off?

 

[WERA49]

Are you sure traction/stability control is completely off?

Thank you for the information. I'll verify the traction/stability control in the near future.

 

[Garfy]

And it's there to protect your gearbox.

Anyway you are already making a ton of power on that car, you will spin forever and ever if you try to put it on the ground on first and second.

True as even a pure stock base GT with 3.15 gears will smoke the tires to the redline in 1st and continue after it shifts to 2nd IF you turn traction control off. I wonder if the OP had that issue before the supercharger was installed?

 

[Ramairetransam]

pull the dyno plug or whatever its called by the airbox on the the drivers fender , it will shut off all tcs and stabilty .

 

[WERA49]

True as even a pure stock base GT with 3.15 gears will smoke the tires to the redline in 1st and continue after it shifts to 2nd IF you turn traction control off. I wonder if the OP had that issue before the supercharger was installed?

Sir, I bought the car used. The supercharger was installed by the dealer before I bought the car.

 

[monte87]

3.15's are horrible even for a supercharged application. I have same situtaion, it doesnt build steam until 3rd, and is a mutt off the line......

 

[Zathras]

What drive mode are you using? In Normal drive mode, my car is a slug in first, or whatever gear the A10 selects when you start rolling from a stop. I think Normal mode holds back a ton of power in first gear.

In Sport or Track modes though, it's a whole other story... got more power than I can put down.

 

[Garfy]

Sir, I bought the car used. The supercharger was installed by the dealer before I bought the car.

Sorry, didn't know that as your post didn't mention that. Never drove a supercharged current generation Mustang so don't know what it's supposed to feel like. Stock model seems fine taking off from a stop in Sport mode.

 

[WERA49]

Today I switched to track mode and floored it from a stop. It instantly smoked the tires. The weather was cool and I had not done a burnout to warm the tires.

The nearest dragstrip is a 150 mile round trip. I'm not sure if they're still running this late in the year.

All I want is to get into the 10's in the 1/4 mile. The engine is stellar and the car is fun to drive. I'll get some better tires and test various modes and start procedures next year when the tracks open.

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