Just installed crawford plenum on friday,but car has a rough idle. Haven't driven it much since install. Do I have to do a reset or will the car eventually learn the new plenum on it's own?

 

check to have any air leak
hope it helps,
Mike

 

What type of rough idle...does it go under 600 rpms and then go back up suddenly or is it at 650rpms but still feels rough.

 

Use care to be sure that all bolts are torqued properly and all existing connections have been secured and tightened properly, as well. If everything checks out to be right, perform a simple ECU reset via the pedal method.

 

Yeah it goes under 600, then suddenly pops back up. I'm takin it for a little rride later to see if it smoothes out, if not I'll do the ECU reset by pedal like andy2434 mentioned.
Thanks Guys.

 

The ECU's probably just trying to relearn the A/F mix. I put an ez 50 miles on mine with some WOT and it ran just fine. Mine idles around 650, sometimes it'll dip below 600 for a sec. I wouldn't worry about it just yet. Pedal reflash wouldn't hurt either

 

Mine is at 650rpm, but still feels rough.