i finished removing all my emmisions and installing a 3inch turbo back. started the
car up and it ran beautifully. went back and started it up about 3 days later and
the car shot up to 3.5k sat there for about 20 sec then went down to 1.5k and had a fluctuation in idle. checked for leaks found none. here are my mods. i just thought it was intresting to have the car work so perfrectly and then do this. oh also i had the battery disconnected during the 3 days.

3inch turbo back.
no emisions.
all vac lines ziptied.
throtle body mod.
hks fcon (not installed just yet)
hks fcd
walbro fuel pump

ive read up on the emisions mods but was there anything that mabey i should have kept? im going to work on it some more tomorow but for now just ive me some ideas.

 

sounds alot like the accelerated warm-up system. might want to look more into that.

 

Yeah, AWS would do that, or a bad BAC

 

well here is the problem i dont have anyof that stuff anymore........... no thermowax. no bac. no anything.

 

your positive that you removed the aws selenoid? its just below the BAC, its a valve, and it routes air from before the throttle plates via a metal tube that runs along the TB.

Cause cold starts are usually a higher idle, but not 1500rpm difference.

Either way, the 1500rpm and shifty idle is becuase of vac leaks. Time to pull out the carb cleaner and find those first before you continue.

 

yea checked for all vac leaks. found none. vavle under bac and all vavles from that location are removed.