hey me and my friend just put his new motor in his fd starting it up and its idleing at 2400rpm we have messed with his pfc and have every thing at spec. voltage wide open and narrow range. he has the nine piece block off kit from banzai racing we have been messing with the isc no changes. he is running 850 cc injector primary and secondary. also we removed the aws cold start up butterflys. i have looked through other posts and could not find any related or if they ever fixed their problems any help would be highly appricated

 

sounds like a vacuum leak. Look for a nipple somewhere on the UIM or LIM that is uncapped.

 

yeah we found one but capped it we will have to look harder i guess any other ideas i will keep you all updated on our progress

 

Do the rpm's come down as the engine warms up and gets to normal operating temps? Mine idles high until it warms up.