[dhpnet]

My Cruze gets the most takeoff power at about 40-50% down on the gas pedal. When it gets to about 4th or 5th gear I can push the pedal down further and it increases power. But it's still better when I don't push it all the way down. Everything (including throttle) is controlled by the ECM, so it must have been programmed this way. I refer to pushing the gas pedal instead of opening the throttle because I don't know how the ECM controls the throttle, or if putting the pedal to the floor creates WOT.

 

[dhpnet]

My biggest gripe with the car is the un predictable roll out. One time you pull out and its like i need to grab a paddle and help, and the next time its spinning the **** tires. worse when let to its own shifting.

Thanks for the update. I have noticed the same thing with my 1LT Auto. I have had times when it spins the tires from a full stop and I have even had it chirp the tires when shifting into second. It launches so fast that my head hits the headrest and it pushes me back in the seat. Other times it feels like a dog and barely accelerates.

I think it has to do with the weather. I have been watching the torque app and my weather station at home to see if I can find a correlation. I also bought a small handheld weather station that I keep in the car. So far it seems to get the most power when the temp is around 50 F and the humidity is around 50% and the barometer is above 30 inches. And, like I said previously, I get the most launch power around 40% throttle. I only use 91 octane. I think there might be something in the computer that changes the tune based on air density, and I think there may be an optimal air density for the car, but I don't know exactly what that is yet.