Stock motor runs super lean/rich when s300 installed

nonpoint986 · Post by **nonpoint986** » Mon May 17, 2010 12:44 pm

I have 2 different question.

so i have a 97 civic ex d16y8. (swap coming soon) so that means i have a p28 obd1 ecu with a obd2a converter built on the ecu. just wanted to screw around with s300 and play with the datalogging section. when i install the ecu my air/fuel would not stay stable. super rich to super lean. so i uploaded the pre configuration for the d series with vtec....that didnt work so i bought plx system. thats how the air/fuel was off. what pin should i wire the plx wires to since its obd2a converted?

Why else do you think my air/fuel is going crazy?? lol

Post by **Spunkster** » Mon May 17, 2010 2:05 pm

http://www.hondata.com/techplxwiring.html

http://www.hondata.com/help/smanager/ecuconnectors.htm

nonpoint986 · Post by **nonpoint986** » Mon May 17, 2010 2:29 pm

well i had it right then. pin d16...its like the ecu doesnt see a o2 sensor at all, so the ecu seems to be guessing. stock calabration.... i will mess with the voltage offset. and see what happens.