Goukid2

A buddy of mine, well lets just say the supposed "Professional" said that there are wire wires that i must cut in order for my Power Fc to run properly. He gave me this paper saying which wires to cut but it does not tell me why im cutting these wires or what the heck these wires are for. Has anyone ever seen this diagram before or even heard of anything like this?? Yesterday i got her tuned and while we were tuning her she gave no issues, but now for some weird reason i seem to bee having boost problems. Dont know if this has anything to do with it but im just curious if anyone have cut these wires on there harnes before installing there Power FC. Even my tuner was saying he has no idea why those wires must be cut. It didnt give any problems but just wondering if anyone did this.

SLOASFK

iTrader: (5)

This pic is from the PowerFC FAQ which is downloadable in PDF format(www.adobe.com) in the PowerFC subforum.

turBRO240

iTrader: (1)

it acually is better to cut the pins than the wires...... because in the US FDs have pre cats and EGR valves... and in japan they dont... and 93 to 95 PFCs in japan and US are the same... therefore we need to cut a few pins/wires

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

Goukid2

Ohhhhhh okay i see now. But I have all that crap removed anyways so do i really need to cut those wires?

turBRO240

iTrader: (1)

if the pics are already cut..... dont cut the wires.

but make sure its the correct pins that are cut

Goukid2

no the pins are not cut at all. But i just want to know Since i have removed my AWS, EGR, and SPLIT AIR BYPASS do i need to cut the wires anyways? It cant control whats not there right?

Monkman33

iTrader: (28)

If all of those items are disabled or removed already, would it still be necessary to cut wire/remove pins?

mono4lamar

iTrader: (32)

you need to remove the wires reguardless if you have the functions or not. and remove the pins dont clip the wires... if you decide to take the pfc out for whatever reason you can just pop them back in. also if you part the car out the engine harness is still completely intact!

-Lance

Monkman33

iTrader: (28)

That doesn't make any sense to still have to remove them. if the accessory is removed, then the harness wires will lead to no-where. same end result. I was also under the impression that the 95 FD's do not have EGR. But, I will still pull them anyways, since I have the whole harness out. Good time to tag each wire and bundle them inside the wire loom and such.

Goukid2

Who has removed the pins or cut the wires when they installed there PFC? Did anyone not do this?

windom

iTrader: (1)

I actually snapped the pins off the PFC itself. I don't mind because it's staying on the car for as long as I own it. This way my engine harness is still intact. I honestly didn't notice a difference, even after driving 1300 miles from NC without the 4 pins removed.

BoostedTimmy

You have to cut those wires, If you feel comfortable pulling/cutting pins than do so but ofcourse its much safer to cut wires instead. I forgot to cut one of the wires on my harness and it DID cause problems. EGR/AWS is nonexistent on my car.

I don't think removing the pins is vital to the car running, but it causes some small problems than can be a nuisance later on.

Goukid2

hmmm. Well i guess thats all i needed then. If it caused problems for your ca then i might as well cut them. I was just curious who did it was all.

alexdimen

iTrader: (13)

I wouldn't call hacking up a wiring harness safer.

If someone isn't comfortable pulling a pin from a harness connector, then they shouldn't be working on your own car. It's really easy.

You just put a scribe into the front of the connector, lift up the tab that holds the pin in and slide the pin out of the back. You can even heat shrink the pin, then if/when you need it again, just cut the heat shrink off and re-insert it. Like nothing ever happened.

BoostedTimmy

Well see I happened to cut the wrong wire during the process, there are 2 with the same color pattern (no where near each other though really) and I happened to grab the wrong one. Going back to fix it I only had to pull off a cap and splice the wire back together.

Had I pulled a pin there would have been hell to pay, I don't see the point of doing something irreversible like that to my 800 dollar toy.

I actually like the idea of heat shrinking over both to bad I didn't think of that.

Goukid2

Okay cool, i'll do it this weekend, Thanks a bunch Fellas!

Monkman33

iTrader: (28)

Um, cutting = permanent (yes you can fix it with a connector, but it is still permanent modification)

removing pin = reversible. you can put them back! they snap in just like the connector they are part of. so all you are doing is un-snapping it. Just mark which position you pulled each pin from and keep that with your maintenance logs. If you pull the wrong one, put it back, pull the right one. done.


Please, do not propagate false information.

fendamonky

iTrader: (6)

Meh, I snipped the wires when I installed mine.

You really may want to read the whole FAQ that DaleClark made in the PFC section. Run a search on "PFC FAQ" to pull it up. Becoming more familiar with the basics of your computer can only be a good thing in the long run.

Noxlupus

I didn't cut them I just removed the pins from the harness connector. Safest way to do it since if you take the wrong one out you can put it back in. Not to mention what others said about if you decide to remove the PFC for whatever reason.

Removing the pins is not all that difficult, it just requires a really thin flat head screw driver. Do yourself a favor and remove the pin, don’t' cut or snap anything off.

Just my 2cents worth.

rynberg

If your tuner doesn't know why the pins should be removed, perhaps you should look around for a different tuner.

Goukid2

Rynberg, honestly **** off! HE did NOT know what the pins were. Neither did I. If you can READ you would see that the instructions that I had were not labeled. So WE did not want to remove the pins because WE did not know what they were. Honestly alot of you guys are so freaking immature its not even funny. If you have nothing useful to say **** OFF!

rynberg

I'm just trying to save you from an apparently ignorant tuner. If he's not aware of that, who knows what else they're not aware of?

But I really appreciate the attitude!

Kento

Prepare for thread lockage...

cewrx7r1

iTrader: (2)

It is evident that most enthusist do not have an understanding of basic DC electronics. DC stands for direct current!

Cutting a wire does the same as removing it's pin does the same as removing the electrical load. The intent of the "instruction" is to remove a specific electrical load from the PFC.

In your domestic abode you can do this to your TV by:
(1) unplugging the cord (removeal)
(2) cutting the cord (dangerous while plugged in) same as cutting the wire
(3) removing the fuse for that wall outlet (removeal of pin).

All three have the same result, the TV will not function and you will not waste power.

Rynberg's statement is valid!

fendamonky

iTrader: (6)

wow... serious example of the pot calling the kettle black.

I have to agree with Rynberg (and not because he is a mod). A little bit of research before hand would have easily answered your question (DaleClark put out a great FAQ about the PFC, which covered which wires to disconnect and why). Seriously, if you are going to a guy to tune your PFC and he doesn't know one of the basic ideas of what/why you do something to the PFC than I would NOT trust him to tune it, unless you want to post a "so I just blew my engine" thread in a week or two. Bottom line. Your car your call bro, try not to over react when people try to give you good advice.