Well I installed my pfc w/ comm. last night. I have more mods than it is set for so just drove it around w/ out getting into boost. Everything went smooth w/ install. Did the 10 minutes no load, w/ load,etc. and it cleaned right up to steady idle. Don't have a/c or air pump by the way. When getting out of normal cruising, (eg. pulling off to come to a redlight/stop..etc.) The car will hunt from 650 to 1250 just a couple of times and then steady back out to 850. I have played w/ my idle screw and no difference. Max RPM is 6000 and max knock was 46. Being real easy until tune.. Any insights? Thanks Garret...

 

take it off O2 feedback loop in the etc. menu. With the air pump gone, you'll idle better.

Tim

 

Also adjust your Rev/Idle settings Try F/C A-E 1450, F/C E/L 1450, F/C A/C 1450, Idle A-E 700, Idle E/L 750, Idle A/C 900rpm. If it still does it, raise the F/C another 50 and that should cure your problem. You might also need to adjust the bleed screws some more as well.

 

thanks guys..will try it!!

 

made it better but when coming out of gear it wants to stay @1200 now...After warm-up before driving I am 750 and 850 no load and lights on.. Maybe a vac. leak? will spray around tomorrow

 

yeh vac leak

vac hose popped off bro

 

Well every car is different try lowering the F/C points. You are gonna have to toy with the PFC settings and the idle screws for your problem. I've spent hours toying with mine and its still not where I want it. Motor is race ported so I've come to accept the fact that shes not gonna idle like she did when stock.

 

I found no vac leaks.I am non-seq. so not to much to look for..Sprayed around manifolds and no rpm jumps of any kind. I have been constantly toying w/ my rpm settings. A bit lower than what was suggested is making it better. If anybody reads this I guess i need to swtich off the seq control system since i am parallel.. Does not matter now because I am driving and not getting into boost..A few more goodies needed before I set a date w/ tuner....

 

did you tune the 02 feedback loop off?

Tim

 

yea I did Tim... helped some.. also adjusted the rpm/idle settings...thanks

 

do you have the datalogit? how aggressive is the street port? What kind of vacuum do you pull at idle after it's warmed up and idling in the 800's?

Tim

 

If your motor race ported? Mine is and I only see about 15 at about 850 rpms. I believe that the vacuum reading is very dependent on the porting.

 

Tim I'm reading 392 mmHG @ 800 rpm on commander. about 15 vac on boost gauge @ 800......No I don't have datalogit software just thought about entering a rough mao in the commander..Definately won't if there is any danger involved....

 

-392 that is.(vacuum)

 

so mild street port then since it's still pulling nicely at idle.

Tim

 

yes.....mild street port

 

My $0.02. I found that a few weeks of driving after I installed mine the PFC did much better idling. As if it just needed more time to fine tune itself. Smooth now.

 

i see ..yea today I turned it over and it was stuck on 1600 rpm while warming up.. have not started in a few days.. just shut off after 7 or 8 minutes.. just have to be patient..