IS350jet

Forgot to add the part about the learning computer. If you're out there all day nailing your car to the floor, the car will soon learn that that's the way you like to drive it and will compensate by shifting more agressively and will have a more aggressive throttle input via the throttle servo. For the record, I rarely drive my car that way.

07Txlex

Good point but I doubt you have to "nail it to the floor all day". I don't at least and as said no problems losing traction

IS350jet

I have the BS's, REO50's

07Txlex

Are those better? Sorry I really don't know if they are, lol. Hey man either way if you can't now you will be able to soon

IS350jet

LOL! I don't know which ones have beter traction. Maybe the BS's are harder to spin than the Dunlops?

STIG

I just step on it. Works pretty well.

IS350jet

I also notice that you have the sport package. Is it possible that with the stiffer suspension you're not getting the weight transfer, and therefore, less traction?

tt061880

I doubt that would be the reason because I have the luxury package.

Gernby

iTrader: (1)

There will be WAY more diversity amongst IS350s with few miles than there will be with 10K miles. Break-in is the equalizer. As I said earlier, I wasn't able to break my tires loose when it was new, but I had really great dyno results at 9K miles.

javyLSU

iTrader: (21)

That's not true - once the throttle position sensor detects wide-open throttle, the car will deliver maximum acceleration no matter what driving "behavior" the ECM has learned.

Javier

lobuxracer

iTrader: (2)

And it will shift at redline regardless of the ECT/snow switch position. I've proved this to myself a few times. Just be sure your floormat doesn't interfere with the accelerator's travel so you definitely hit WOT, and there will be no issues at all with full throttle acceleration.

FWIW, I raised my accelerator pedal about 1/2" to get it closer to the brake pedal height and ensure I will hit WOT when I mash on it.

tt061880

I think your car is the only one that does that, my car barely shift in redline but I think it doesnt make much of a difference.

combfilter

iTrader: (3)

mine shifts right at redline. It's peaks into it just a tad, but always does it before wot.