first off yes i searched. found alot of stuff but nothing was useful. but heres the problem: one day I go to start my car to go to work and it revs to 1,6-1,800 rpms settles to 8-900rpms and runs super rich and misfires. it smokes an reeks of fuel. as soon as i let it get to normal operating temp poof. runs fine. no issues at all. drives fine, idles fine, boost/pulls fine. this started a few weeks ago and has been doing it ever since. sometimes when I start it up cold it revs all the way to 2,000-2,200 rpms for 20 seconds or so then it settles back to 8-900rpms.. I havent messed with anything or changed anything. just started doing it one morning and has been doing it ever since. my S14 has been boosted for 17,000 miles and never did this before. ill give a little more info on my setup incase it helps:

S14 KA. 172,xxx
SR T-25 At 7psi
FMIC
HKS SQQV
3" downpipe
3" exhaust
BKR6E plugs
Enthalpy Tuned ECU


any input will help. thanks.