cold air = more air = more fuel = more power ! thats right!
but new cars ecu control the boost of the car and even at cold times do not allow it go up the limit
like at 997 at cold times is 1bar and at +85f outside is 1bar
the same air amount = the same boost = the same power

If I am wrong, tell me pls why!

 

you are right looking at that equation, but 1 bar of hot air contains less oxygen than 1 bar of cool air..... so things change in cool weather

 

Yes, put it the other way around. When on a racetrack or dyno, all cars will suffer a powerloss when hot. The fastest times of the day tend to happen early in the morning when we run on the track. Even though the track surface is colder (ie tyre temps take longer to heat up), the power of the motor is more efficient due to the cooler conditions. I went to the dyno last year on a cool evening and we hit 505whp. A few weeks later during a hot day we had to go back. 435whp. Massive differences. Mostly to do with heat change.

 

I tried a lot of tricks till I got into 4s and when I did it.. that was directly a 4.7s, biggest trick was raising the boost till 1.8bar

 

A pass from my car tonight, still stock motor.

 

Nice. Acceleration in 3rd is very strong @ 0.9 g and you are shifting as if you mean it so . What boost do you run?

 

Thanks, 28psi.

 

Why do you shift so early? Seems its working nicely, but do you have a good reason to do it ? I shift above 7000rpms on similar turbos as they are still delivering a lot of power.

Congrats on your results, never thought it can be done with your type of setup