when it is started cold with choke off i hear a PSST (sounds like air pressure blow-by, could be a vacuum leak) for a second then stops and continuesever few seconds, sounds like its coming from the PAIR reed vavle or PAIR control valve. and also when it gets up to temp (200 or so) the idle will bounce between 1000 and 1500 any ideas on what it is or how to test the PAIR system i have looked around but not alot of info on what the PAIR system is

Why not list your mods so we know what we are working with? :D

John

only mods that i know of is a jardine pipe, k&n air filter, the guy i bought it from said the computer had been re-mapped but im not so sure it was :dunno those are the only things i know of everything else is factory