Alright guys. Just did a b18c1 swap in a ek using an 99-00 Si ecu & 99-00 Si harness. The problem is that when I first start it. It idles fine but the more I drive it. Seems like the idle gets worse and worse, and it starts to miss at idle, and idle really low. I reaplaced the plugs & wires. Checked the dist & rotor. All look good. I just dont know what to think. The more I drive it. It just seems to barely want to idle and seems like its missing. Any ideas?

Only thing I could think is that the Si(p2t) ecu doesnt like the b18c. Think a P73 ecu would make it want to idle better?

 

you need the gsr ecu, different fuel maps/vtec point and the seconday butterfly in the IM.

 

I know all that, but it drives fine. The only thing is doesnt like to do is idle nice. Thats why I beleive something is wrong.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SilverEk3dr &raquo;</TD></TR><TR><TD CLASS="quote">I know all that, but it drives fine. The only thing is doesnt like to do is idle nice. Thats why I beleive something is wrong.
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Yeah, its called fucked up fuel maps and ignition tables. Just get the right ECU and go from there.