Guys I have notice that my car at WOT has been coming "white smoke" from the exhaust but only at WOT, then if I let the gas pedal of, it will take about 10 sec to stop the white smoke..
normal driving is ok. and even if I give 1/2 of gas is ok..the problem is a WOT, The strange par is this one, the car feels quicker since has been doing that

 

... you sure its not just because its cold?

 

Stop going WOT until you've figure it out.

From the sounds of it... you're going VERY lean at WOT... that would be why you're going faster... the leaner you are, the faster you will go.

I had this "problem" when my fuel pump was dying. I was looking at a video of me at a track doing a burnout and saw the white smoke. I was making excellent times but checked the pressure and it was way low. You'll be going faster... but not for very long.

First thing I suggest you do is check the fuel pressure... do it with the vacuum line off to simulate WOT..... can't remember the actual values you should get..... but someone here will know. If the pressure is low... it may be a pum... check your fuel filter, etc.

I repeat... stop doing it until you check it out.
Just to be safe.... a lean condition is bad for your car.

 

White smoke can also be the result of a coolant leak into the piston. If this was your problem however it should be happening regardless of throttle position. Just to play it safe check your coolant level. If you coolant is not low, then C Man is probably right and you may have a fuel delivery problem.

 

ok guys, I finished talking to the guy who did the custom programing of my car, he told me that it could be that maybe is letting too much gas... that he will check it with the laptop on saturday... tomorow I will check the coolant level
thanks.. if it was a blow head gasket... that can also be?