Hey just did my B18c swap. It runs all good and timing is set and running P72 map. The problem is in idle the car will idle perfect but once in a while 'pop' like backfire and then idle good again until a few seconds later when it pops again. Car drives fine with no misfiring or hesitation. What could the problem be? Could it be it running rich at idle or something to do with the ignition system?

Thanks

 

Sounds like its missing...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ILoveJDM. &raquo;</TD></TR><TR><TD CLASS="quote">Sounds like its missing...</TD></TR></TABLE>

If its missing wouldnt it happen other places in the rev range? Only pops on idle and i've had a look at the plugs and they aren't fouled.

 

i would try to get a wideband and datalog you a/f ratio at idle becasue you could be running either lean or rich to have a stumble at idle. most likely a lean condition i noticed that most base maps are lean at idle.

 

Dont have access to a wideband though. Will check plugs again soon

 

yeah i know sometime its easy for someone to say buy this and that like i did but just letting you know. checking the plugs will be the best way to check for you.

 

Bump still happening. Could it be symptoms of the dizzy about to crap out?