i powershift alot of the time too.
255/50/zr-17 kdws in back
i know what u mean on the stock tires...i got it to whip sideways several times on the 1-2 shift (kinda scary at the time).
before gears on stock tires i chirped good into 2nd, and about 2/3 of the time scratched at all into 3rd (never 4th).

btw, 4.10s are gods gift to performance in this car IMO. i give them credit for my 13.2s with horrible 2.1xx 60's with nothing but gears and pred tune

Wow, I guess it's a good thing you didn't pay for mine then huh? I'll be sure and check with you before I buy my next car. My wife is thinking of getting a new car in the next 3 or 4 years, perhaps you'd just like to tell us what make, model and color?

Sean

Not really power shifting mine. I do let off the gas and push in the clutch, but just enough of each to get it to shift. I wouldn't really sweat not chirping/scratcing the tires, what that really means is that the tires are loosing traction. I don't drive mine like that much, I was just showing off for my dad. The 3rd to 4th chirp surprised me as well. It had never done that before. 2nd to 3rd I've only had a few times. Like I said too, it did it on one type of road surface and not the other. The one it did get 4th on was an older road with a nice shiny surface. The one it didn't was that rough, pebly type.
jeff

Mines black on black also, I have two other black rides, it's hotter than heck here and I live on a dirt road . . . once you've gone black you'll never go back :-D .

Look at these sigs with the guys chirping 3rd and 4th - they ain't stock :)

For my car its all an issue of very hot temps...tried this morning before it got hot and again tonite after it had cooled down a bit -squeels like a kicked dog in both ears. Doesn't matter if TCS or AC is on or off. But during the heat of the day - no chirp. I think someone else had it right, its still grabbing then - just you don't get the chirp because of the hot temps.

Earl

I have never had any problem chirping 2nd gear, and that's including at 5000 foot altitude and in the 100 degree weather.

With the stock tires on a nice warm day and a road that several people do burnouts on. I did a nice burnout in second and power shifted into 2nd. Next think I knew I had left a very long patch of rubber. We went back and measured it off. 1st gear left close to 60ft rubber, then a 4ft section was bare and then you could see when I hit 2nd gear. Another 20ft of rubber :nice: Ah, those were the days. Now my tires don't lay rubber at all. The squeal really good in 1st but when you go back there are no marks. Good tires :D

My 05GT M will get a pretty good chirp into 3rd and will even try to get a little sideways sometimes, even on a dry concrete road. My only mods are a Predator 87 oct tune and Ford Racing 4:10s. Into 2nd it gets real squirelly.

Mine is 100% stock!
Well except for the carbon fiber license plate frame on the back. Maybe that gave me a 20hp gain :dunno:
Kinda like all the stickers that give the ricers a 50hp boost :-D
jeff

hahaha i was waitin for someone with a blower to come into this thread and say that they are completely stock...except for 9psi of boost...

Amen brother.