Oh, my God. You are a pro. For me, so onto a petrol pump with a bigger pressure I have need. What kind of injector you use. How large an, and how many ohmic? My acquaintances vems they are useful. I it would not be liked only chip. Can you help with him? Slick I do rubber, but vain 120 scratches.
We rebuild the engine now onto stronger one. Help with your expertise. I say thank you for it nice  

Tires are free, so a lot of people use all kind of slicks.  (from track and sprint tires to M/Ts and Hoosiers) 

Atommano, thanks.

I'm not sure if this is the place to give advices but I'll do it anyway.
to 345i: Are those HP on wheels or on engine? Did you do any tuning till now?
The easiest way to have more HP is to change boost control chip whic is in car ECU. Othervise you can't have higher boost than 0.7. Those stock engines are capable to have 1..0-1.2 bar boost with the stock KKK27 turbo. If you reach this boost you will have 320-340 hp on wheels which 370-380 hp on the crank. A lot of 745i drivers are talking about higher HP but I have 2 of those cars and I can asure you that is very hard to get more than 340 HP with stock turbo. I have Holset HX40 turbo which is larger and on 1.2-1.4 bar boost it gives me 380-390 RWHP...

With this chip you will need mechanical boost control device and a new petrol pressure regulator because you will need more fuel. With the standard pressure regulator you always have 2.5 bar of fuel pressure which is not enough for 1.0 bar boost.

2 everyone: I forgot to ask, do you use slick tires or you have to use DOT tires on races?