b@@sted_fd

does anyone have a copy or picture of the diagram that shows which wires to cut for the power fc install?

b@@sted_fd

bump...

Matt Hey

If you searched you might have found these...

https://www.rx7club.com/showthread.p...ight=wires+cut
https://www.rx7club.com/showthread.p...ight=wires+cut
http://westpenn.rx-7.org/ApexiPFCpinout.htm

Also you don't need to cut the pins...

https://www.rx7club.com/power-fc-forum-47/how-pulling-pins-ecu-connector-424626/

Max_Spd

iTrader: (78)

Sorry for the intrusion, but all that is needed for the install of the PFC is the 4 wires to be cut/pulled from the harness and thats it... or as I read in a few posts AC in and AC out need to be spliced? is that necessary or what?

I just got confunes the more I read on different things that people talk about...

Thank you...

Matt Hey

The A/C stuff does NOT need to be done. It does not affect how the car runs. The A/C will likely work on at least one of the fan speeds and may work on all of them (for awhile . The 4 pins may not even all need to be removed. They are for U.S. emmissions in the U.S. that are not in Japan. Non-California cars may only have to remove 3 pins and '95 cars (no EGR) only 2. It's simpler and safer to tell everyone to remove all 4 though.

Max_Spd

iTrader: (78)

Yeah I have a 95, NO EGR...WOW i didnt know that...I'm am somewhat new can u tell...lol

So what you are saying...please anyone correct me if im wrong...

No need for the AC mod to be done...and it should work with at least one fan speed (1) on the dial or (unknown) (3,1,2,4) random depending...but if i want the AC on all fan speeds I will need to splice AC in/out

As for the pin pulling/cutting on the harness I only need to do the: aws valve(26 pin, brown/yellow), split air bypass valve(26 pin, black/red).

And dont need the worry about, and just let it be...
egr switch(16 pin, blue/green), egr valve(26 pin, blue/yellow).

Am i right in my conclusion

and as faar as the learning different people are coming up with slightly different ways of doing it

one way:
10min on each 30min total
1-nothing on
2-defrost
3-everything on (I mean everything electrical)

another way
1-nothing on
2-A/C
3-everything on

This is weird and random in a way due to the fact that the Apexi manual describes the learning curve for all makes of cars, so different cars react differently, and to some idle suffers from bad or different learning routine in that its either 2 low or 2 high or plain retarded and acts weird when A/C and such are on...

So can someone tell me what the optimal idle suppose to be on an FD and what some of you had success with in terms of both the pins and the learning routine...

Thanks...

Matt Hey

The A/C will usually work with fan speeds 1 and 3 but most people want 4 for max cooling. All speeds work for quite a few people but it usually doesn't last forever. Splicing the A/C wire will not guarentee it will work on all speeds either. Sometimes the selector dial/switch is bad or something else. It's not always the same reason and that's why there isn't a universal fix that works. I recommend trying the A/C before trying any fixes.

That is my theory at least . Most people who don't clip/remove the 4 wires report a ruff idle but no damage to their 7. It's nice to see someone did their homework and knows how to use the search.


In my experience the PFC will learn the idle without the learning routine provided there is not a large vacuum leak and the idle screws are close enough for the Idle Speed Control to work correctly. Taking the car out on the road without going through the learning routine could cause a high or fluctuating idle and bockyness or dying which could be dangerous and people may look at you funny. It may then learn the idle but flipping on the lights or A/C may cause it to act up until learning some more.

Max_Spd

iTrader: (78)

Thanks for the advice and I take it u done this on yours, what year is yours anyways and what did you do to yours in termes of pre mod. to install the PFC...

Matt Hey

I bought my '93 RX-7 with a http://www.srmotorsports.com PFC already installed that is sold with the 4 pins removed inside the PFC. My theory about not having to remove some pins on certain models is based mainly on logic. If the EGR does not exist then the wire going to it has to be open or reutilized for something else. For compatibility with earlier models and the lack of significant added features in the '95, the chances are the EGR wire is not connected to anything and therefore can't cause a problem.

Max_Spd

iTrader: (78)

AAAAHHAAAAA!!!

Interesting...thanks...

jamespond24

iTrader: (13)

Sorry to bring this back from the dead. Does the pin cutting apply to all models of the PFC?

jamespond24

iTrader: (13)

I found out what to do thanks.