Hello,
what are the biggest injector that P28/P30 can control?

 

as long as it works under 12v and ground controlled, then the ecu can make it work
but the stock ecu cant turn the injector down so any injector bigger than the stock 240s will cause the motor to run rich

 

I mead chiped ecu. I will use as every day car and i need stable 750-800 rmp idle .

 

Those two words don't belong in a sentence together. Get a tune. Your car and motor will appreciate you..

 

getting a tune means crap w/o the means of putting the tune in the ecm. either via a CHIP or a full blown ems.

the s200 uses chips. so in effect it is a chipped ecu.

the p28 can control any injector providing it has the correct resistence through the driver circuit.

dont worry about how big it can, but how big you need. being out of the loop and having crappy rc1200s for the run i ran my car, my s300 with 1200s did ok. idle was tollerable. but with the new crop of injectors and all the updates hondata was coming out with, you shouldnt have an issue.

 

Yea, anything thats goona put more fuel or air than a lil over stock, needs to be tuned to run.... stable.