The Next Ecu To Dominate The Sau Community?

[Cubes]

Not sure what others would charge but its not rocket science.

Requires access to a datalogit and a little loom fiddling which is bugger all. I'd say in all, 30mins to 1hr max in labour providing the bloke doing the work has half a brain.

[LTHLRB]

looks like im in the right hands then

[666DAN]

but Dan tells me that they can all be stuffed in behind the original ECU

I havent done this yet because im waiting to get it tuned then ill install it properly

you make me sound brutal, seriously though my Field harness was literally folded in half with the excess wires sliding into the cavity behind the ECU.

[gts-4 dreamer]

so how much beer would it cost me to get the 26 pfc installed in my stoopid 25t then ?>

cuase otherwise im going to save up an get me a emanage ultimate...laaawt of saving though

[paulr33]

a faq for the emanage would be very useful

its not a matter of beer

but a matter of changes, adaptions and known "gotchas" when using the rb26 PFC on rb26

the biggest known gotcha is no VCT support at all

if you have aftermarket exhaust cam gears then this point is void.

in summary;

you need to copy the stock rb25 maps onto it (need datalogit)

need to parrell up the afm signal (single afm into twin afm ecu)

need to parrell up the 02 signal (single 02 into twin 02 ecu)

rescale injectors down to rb25 size (unless u have larger ones)

but there are plus sides;

djetro option

working air temp support

can use twin or single afms if u want (both work)

can use twin or single 02 sensor (both work)

and u can buy it new from most apexi distro's (nengun comes to mind) for $890 delivered

[paulr33]

ive been thinking about buying a 26 pfc for a while now

and just trying it on my car as i have datalogit

but the main worry is the wiring loom changes

i guess i could open it up and make the changes

ap engineering style

[Pauly33GTS-t]

if i had say.. an uncle with a microelectronic engineering firm, would he have the needed tools to do it?

[Cubes]

Paulr33.. Just simply pull the wires out of the loom ecu plug. A fine metal toothpick and it slides out.

But then again Paul... I can't believe your still game after your last effort. haha

[paulr33]

yeah im not to keen to go hacking my wiring loom after last time

[paulr33]

how many would be interested in a custom "ap engineered" style PFC to suit their rb25

it would mean however no working VCT support. if you have aftermarket exhaust cam gear then this problem is void.

it would involve me buying a 26 PFC and then making some changes to suit your rb25

[Cubes]

Might be worth checking out if jaycar has anything suitable to trigger the vct from an rpm signal.

I know I've said that before paul but surely some one on this site should be able to easily sort somethign?!? :S

[paulr33]

you would think so, its purely an on/off relay to fire the solenoid

[paulr33]

Might be worth checking out if jaycar has anything suitable to trigger the vct from an rpm signal.

I know I've said that before paul but surely some one on this site should be able to easily sort somethign?!? :S

http://www1.jaycar.com.au/productView.asp?ID=KC5378

[Cubes]

So hows the vct work?

Just above idle it enables, then at the preset 4700rpm for example it disengages again.

This increases overlap during the mid range to aid turbo spool and mid range torque, over 4700rpm it turns off as to reduce overlap and prevent reversion etc due to backpressure which by doing so helps top end.

[paulr33]

yep

i had mine turn off at like 1900 for a bit of fun

and the car was sluggish and drove like a bucket of poo

thats not to say it would do the same withit complelely off

[Sydneykid]

http://www1.jaycar.com.au/productView.asp?ID=KC5378

I think you would need 2, one set at say 1,200 rpm to turn it on and one set at say 4,700 rpm to turn it off. You could install them at the ECU and use the same pins in the ECU plug as the standared VVT. Pretty simple actually.

cheers

[paulr33]

have just realised the same "ap engineering custom" ecu could be used for rb25 and rb20

in fact its easier on rb20 as you dont need to worry about VCT support

[LTHLRB]

if your running a pretty hardcore engine you wont be using vct... i wont be

[Cubes]

Clint32 built up his 'hardcore' r32 gtst track car.

Was awesome to look at.

He purposely retained the vct and 9:1 comp ratio and still made the power he wanted. GT3040 on the engine dyno it pulled 580hp at 26psi.

[LTHLRB]

3040? geeze thats a big figure...

Im just going to run hks cam gears no vct on this engine.. what do i do with the solenoid? leave it or take it out?