400hp w210, om606 Turbo or 320cdi?
400hp w210, om606 Turbo or 320cdi?
A bigger IC wont add power but will help to keep power level upright in hot conditions. Limiting parts are still injectors and turbo, see what tuikku is building, thats always a good advice which way to go.
Oh, and for aggresive tune you will need 300kpa MAP Sensor which also has to be integrated correctly in mapping.
Regards, Alex