hello dux too bad. l know bosch easy to tune. that been here for a long time.l had the siemens system of m104 lying around and was cheap to buy they at a scrapyard. for bosch they know the prices here. but anyway l have removed chip from my ecu and soldered an adapter for easy replacement.and l put a copy chipin my ecu and l tried to read the number 256 in the entire file. and we can't do anything with that.you say the same too bad for such a nice system. l now use a stm6 from prefectpower. the box is still for sale on the internet but the company no longer exists. if the software searches i have it.and i use that to adjust the air mass meter signal which works well i have increased the voltage +- 0,50volt.and them i use the vialle lpi gas injectie systeem to fine-tune even more power because the octane of gas is 103. you notice that on the dyno