ok im having some weird problems with my s300.
car:98 civic ex
motor: sleeved b16 9.0:1 compression, built for turbo n/a at the moment

i was running a jdm p30 ecu then bought a s300 from a friend and i put it on because i had a celo and wanted to know what code it was. (knock sensor and o2 sensor). ok the problem is when i put the s300 on the car and uploaded the jdm p30 basemap from hondata it ran perfect everything worked vtec etc (which didnt work with jdm p30) then suddenly after about a hour it just died at a light no warning nothing and wouldnt spark it would just crank. So i updated SManager to 1.5.4 thinking it would solve the problem, but it only prolonged it. i reuploaded the jdm p30 map after updating and it ran for about a day and did the same thing. can anyone help?!

i dont have a wideband hooked up to the car at the moment so i dont know the a/f. can anyone give any insight to the problem?

Also when the car dies and i try to start it back up the red light on the side is on. the ecu is genuine and version 1.5.4 is downloaded.

 

First check and make sure the ecu plugs are plugged in all the way..

Second open your s300 to make sure its not a counterfeit..
http://www.hondata.com/s300_counterfeit.html

 

I know its not fake ive opened it before. And ill try with the plugs lol...any other things