okay.. here's a quick but critical question...

i know PFC has the ability to self learn the idle etc etc etc to find a perfect idle.
i don't have a FC commander at the moment. and also i'm running on someone else's fuel mapping and ignition mapping.

at the moment i'm suffering from bad idle... it stalls quite often... even at the traffic light.. the RPM go too low... and it just stalls... need to restart the engine...

are there any quick solution on how to make it learn faster ?

i'm now adjusting the throttle line give it a higher RPM as temporary solution to get the RPM higher so that it doesn't dies off...

 

You have to have some knowledge of feedback systems and how they work to understand why the PFC's might be failing.

Basically one or more of the parameters are too far out of range for the PFC to compensate. You can still adjust two of these without the commander. Idle air flow, use the air adjusting screw to increase or decrease it. Adjust the dashpot
to slow down throttle body closure. These have been discussed many times here as most newbs have these problems.

Ask Dave about my notes.

 

he still haven't respond back to me regarding your notes... but i'll continue to page him... gonna meet him around christmas time to tune my car.
i'll remind him to bring the notes along.

 

you need the hand controller to reset it or "DATA INIT" the unit
this will reset to factory defaults (including maps and all data) and then when you first start the car it will being self idle leran. it only does it once for the first 30 minutes after a DATA INIT has been done successfully. it should sort out your dodigy idle problem but youll need someone to copy your maps if its been tuned, and then restore it once done.

the FC commander manual gives you the install procedure and self idle learn procedure
alternative its in my PFC faq here

http://paulr33.skylinesaustralia.com...owerfc-faq.htm

28) How do I install the PowerFC?

 

what if i don't have the commander to reset the ECU ?

i mean.. does the self learn still work even i don't reset the ECU ?

because i got the PFC from someone else without the commander.

 

no, the only way it "self learns" is after the DATA INIT
which can only be done via the hand controller or datalogit

 

okay... then i need to deal with the fluctuating idle until i got the ECU reset and tuned.