i've got a 98 hatch with a b20 in it using a conversion harness to a obd1. with the LS ecu it runs and drives fine but when it comes to idling(at a stop light) it' will idle then die out. with my roomates skunk 2 ecu he claims it's for a b20/vtec but will rev to 10k so i don't think it's for a b20/vtec. well with that ecu it runs and drives fine, but feels slower, and it idles perfectly. any ideas of what's going on? also i've been thinking that's it's not getting enough fuel at idle so is there any way that i can up the fuel pressure? well besides getting a new FPR?

 

could be a couple of things wrong with it. as for upping the fuel pressure, pinch off return line dont do very long though

 

well what else coule it be? i changed the fuel filter, plugs, it's got a new throttle body gasket, cleaned the throttle body, cleaned the iacv and adjusted the idle. when it does idle it idles at just under 1k

 

i've also checked for vaccum leaks and couldn't find any, but there is a port on the back of the manifold that is plugged