Hondata

Hello I am from portugal so sorry my english are not very good, so I have a b16 turbo at 10 psi, I have tuned before with crome without problems, now I want to tune with s300 and I have many missifires in pressure and whem missfire stops dataloggin, stop usb, I have to start dataloggin again but if missfire again stops dataloggin, so where is the problem, when I put another ecu with crome rom I dont have any problems.So can Anybody help me?

This sounds like an ignition problem (caused by intereference from aftermarket ignition components). Please list exactly what has been done to the car (all modifications).