Hondata

hi. i currently own a 91 integra with ls-vtec(b18b/b16a head). my ecu is p30 from japan. my bro install the s300 and everything seems working good but i'm getting codes from the dash for a secondary o2 sensor and knock sensor. vtec still kicks in but engine light comes on and i cant able to datalog. what seems to be the problem?

All hondata systems use an OBD1 ECU. There isn ot secondary o2 sensor on OBD1 ECUs. What are the exact error codes you are receiving?

i cant get any codes from the hondata unit. on the dash im getting code 2 & 23. the s300 unit is unresponsive to datalogging. we've done everything step-by-step to fix the situation. on top of that the ecu is under limp mode. i cant drive pass 3500 rpms. is there any way i can send my ecu for you guys to check it out or fix it?

question to ask. can my OBD-0 map sensor work on OBD-1 computers? or do i need to upgrade my map sensors?

Do you have a s300 or an s300j?

s300j

It is most likely an ECU socketing problem. Has J4 been removed?

I have removed the j4 resistor and moved it to the j1 location as instructed in the installation instructions. I also trippled checked the sockets and all looks good. I don't have a socket tester to test to see if all is good. I have 2 jdm p30 computers and I socketed both of them and removed the j4 resistor and moved it to the j1 location. So I placed the s300j on one computer and it doesn't communicate to the ecu. Then I placed the s300j on the other computer and it doesn't communicate with the ecu as well. Maybe the s300j itself could be bad? One of the ecu's stays in limp mode and other goes into limp if not used more than a day until normal heatig operations.

Any thoughts, anyone?

What version of software are you using from Help, About?

version i'm using 1.4.0.0.

Is it normal for the l.e.d. to be blinking? The red l.e.d. is on then it turns off to let the green l.e.d. turn on, then the green l.e.d.turns off to let the red l.e.d. turn on but in a fast blinking state. Is that normal?