[Olli]

What about the cold air filter and other spark plug?
I have already change them. A had a BMC CDA filter and Denso Iridium IK20 spark plug.

Do i must tell that to MTH or is the software the same?

The car also works with serial spark plugs. My car works with MTH software and serial plugs without any problems. Although HiTec recommends spark plugs with a higher calorific value because of rised cylinder head temperatures. With HiTec, you even reach about 162kW.

About 19% smaller pulley i was reading, that it's not good, but it's more power and torque at lower rpm.

Of course you achieve more power, but the water pump is combined with the charger. If you increase rpm of charger, the speed of the water pump will also rise. I guess, 56,5mm is really near the border killing the pump.

Hi tech is to far for me. In one way i have 800 km. Does hitech put on the car MTH software?

What is the price for MTH software and they the right pulley? Could i buy the pulley here in europe or i must order it from USA?

HiTec is using MTH Software. It is adapted to the charger modification. If you do the software update on your own, it´s pretty cheap, because you only need to registrate at MTH and buy a OBD3-cable. Then you can read out the original file, send it to MTH (email). Franz sends your new file back and you can flash it into your control unit. The registration ist about 60€, the cable also. To flash the data, you need a laptop.

But if you way to drive is "only" 800 km one way, I give you the advice to drive to HiTec Viernheim. These guys did the modification a dozen times and you will be glad, having this work done by specialists. Although you can take out a tuning policy. Price for the HiTec mod. ist about 650€ including performance test and "TÜV".

greetz

Olli