rx-7ml

Ok, so I've just seen that they do a Power FC Pro kit in japan, that basically is designed for high powered drag setups. It has the ability to do ignition cut, whereas the standard one does fuel cut.

Bascally, I have a standard PFC and wondered if there would be any benifit in me getting the Pro. I'm not going single, and will be sticking with the twin setup, so power won't be huge. Around 400 atw hopefully.

When does the ECU use fuel cut?

TIA

NewbernD

iTrader: (1)

It's not worth getting for you for several reasons.. The PFC Pro is based on the older v2.x style PFC.. not that it's anything bad, just not the latest and greatest. Second, the only thing it really buys you is a 2-step rev-limiter for drag launches... and those are usually based on ignition cut.

To answer your questions, the PFC cuts fuel when boost rises above the target boost setting by a certain ammount, and at redline.

I'm not sure if anyone's suffered any damage directly from the fuel cut (it's complete fuel cut, not just a percentage so you won't run lean.)

There would, however, be benefit from getting a Datalogit & wideband so that you can tune your PowerFC..

IGY

Actually they have the power fc pro in any version of power fc. The older 2.X version is a removeable chip, and the 5.X requires that you send the pfc to Apexi because the chip is surface mounted.

Yes, all it does is get you a 2-step rev-limiter that is ignition cut based for drag launches. Not wise to use on stock turbos I will add.

By the way, to upgrade your pfc to pro costs about $80 for the chip.

NewbernD

iTrader: (1)

Didnt know that, IGY.. but we don't hear much about the Pro version over here. Thanks for the correction.

Have you used one? I'm curious if you need a new commander to set up the 2-step, or does the commander pick up the changes from the new chip? Or is there another method?

IGY

I haven't used it. You use the same commander. You lose the AC idle settings and the 2-step settings take their place.

LetsGO7

iTrader: (2)

IGY...You are wrong on the which version to use.

You have to get the correct model (which is the older one, 2.XX)

They only allow the olders ones to come in (i have the list on which pfc can be moded on). But the 8,000 Yen pricing is right.

I got one and it's the older model that has been done.

Why not the stock turbos? It's not an Anti-lag system...you MAY get SOME boost lauches but very small.

-joe

Just get the stock Power FC...(i don't have a datalogit nor wideband...until i get them...i'm taking it easy) I will update on what happens after tuning.

IGY

No, you are wrong. Take a look at where I live. You can get the pfc pro chip for any pfc. I listened to the Apexi dealer talk on the phone to Apex about it.

Why not stock turbos? Um yeah go ahead. Let's see, anti lag= fuel in the manifold to keep the turbos spooling during a shift. Drag launch 2 step/pro start= fuel in the manifold to spool the turbo creating boost before launch. Sounds like the same thing to me. The excessive heat that is generated has cracked many a manifold and melted many a turbine wheel. On smaller housings and wheels the damage is more likely to happen earlier.

LetsGO7

iTrader: (2)

i hope you can read japanese... goto Apex-i or better yet goto AP-engineering website (japan).

go under mazda....the column with PFC models.

they list all the model PFC that can be chipped. From kouki, zenki, and kouki (280ps) 414-001, 414-002, and 414-003 these are all older models of PFC.

So you're wrong...I called AP Engineering...they asked for the serial number....newer starts with FD3S4 and older starts with FD3S2...

But when i was talking to an ap-engineering staff, Furukawa san, he was telling me about the years that the PFC was made in, somewhere in that matter...the point?! He was checking if the chip can be put on the PFC that i had or not. i.e. FD3S2 (XX)XX-XX...X, the (XX) are the years printed on the serial number, older PFCs were made between (mid98~early01)

who cares if you live in Okinawa...you have to take a boat to get to main land, don't you!? SO it's not like you are living next door. OH yeah....Apex-i doesn't really deal with AP-Engineering goods. Maybe the Dealers for AP products do. So you were talking to wrong people. Also Japanese people always talk in that middle ground...if you know japanese, you know what i'm talking about.

LetsGO7

iTrader: (2)

the boost lanuch...said some boost launches..not ZERO! please read...Also i'm not the pro on two stage rev limit vs. anti-lag, but this was questioned and answered by AP.

-joe

IGY

I'm sorry I grouped Apexi and AP Engineering together. They are so closely related that I usually don't make a distinction between the two. I was also asked the version. I think the confusion you are experiencing has to do with the fact that they sell the chip seperately for the old versions because it is easily removeable. For the newer versions you are required to send the pfc to them/ cannot be performed by a dealer, because the chip is surface mounted. I have both versions, I know the difference.

LetsGO7

iTrader: (2)

i know the difference between the two but i always understood that it need it to be older one. I ordered my PFC and it was new from AP and it is the older model code made in 01. Oh well...i have one.

-joe

IGY

Who said anything about ZERO boost????? It is very apparent you don't know what you are talking about when it comes to antilag vs. two stage. My point was that by using the two stage you are effectively inducing raw fuel into the exhaust manifold caused by overly retarded ignition timing creating extreme heat and pressure in the manifold which in turn spools the turbo creating boost. Antilag does the same damn thing, it is just used in a different application. By the way retarding the ignition is not the only way to achieve the same result, you can also cut timing, or add extra fuel, or both.

IGY

Before I bought the newer version the previous owner had already arranged for it to be shipped to ap engineering for the upgrade. He went 3 rotor instead. I should send it off to have that and the twin driver upgrade done(allows for more injectors), but I already have the pro chip for my old version and I can just use resistors to run extra injs.

rx-7ml

thanks for the info guys.... now get off my thread

IGY

That's not a nice way to treat the people who answered your ? is it. If we weren't on your thread you wouldn't have an answer and you would be pushed onto page 2 where nobody goes. J/K

LetsGO7

iTrader: (2)

yeah! IGY is right.

:P