jackhild59

iTrader: (7)

You don't have to fool the ECU if you spend $100 and go Rtek 1.5 for S5. I was unaware that they produced the 1.5 and had only been looking at the 2.0. Another member PM'd me to check it out.

1.5 is available for self-install. The only modification is that it disables the MOP functions in the otherwise stock ECU.

If you leave the MOP on the front cover, it will then inject at whatever rate it is set at, or you can go ahead and remove it and use a block off plate.

I am currently thinking about switching my front cover for an S4 to use the mechanical pump. Then a switch to the Rtek would complete the easy conversion.
The only hold up is that I am trying to determine just how to adapt the linkage from the mechanical MOP to the S5 throttle.

RotaMan99

$100 for only the removal is a bit much but I suppose its really personal preference.

If you could include voltage dividers in a small plastic project box next to the ECU and directly wired into the specific pins, you coudl remove the full range unless you need it for something else and the OMP.

The Rtek is great but its nice to think that there may be other ways of going around it.

I have already done it and here is the writeup.
http://howto.globalvicinity.com/gv_w...=305&co=1&vi=1

Havoc

Its more of an issue for guy that have aftermarket ecu's and no premix. eg the guys with micros that cant control the omp and cant be stuffed changing all the front covers over to mechanical. + mech omp's are getting quire rare in OZ now.

Bump welcome to the forum's !! was thinking aut your device when I read the thread. should be good when it gets going. I bought a E* puely based on it can run the omp.

-Anth aka 2nd gen 7 from PR and AR

bumpstart

are you being deliberately ignorant ?

there is many reasons why you would wish to drive the OMP aftermarket

- what do you do if you want an entire late series motor on LPG?

- many cheaper aftermarket ECUs cannot do so

- there is limited supply of 4 oiler mech OMP and TBs, and they cost the average Joe major labour to fit
( i can swap a timing cover blindfolded , and have done so umpteen times )
you get pretty sick of doing it when a small electronic brain that costs less than the labour time will do it , and do it better

- there is many people who make the option to swap in s5 engine to s4 FC
and find the need to swap ecu, wiring and dash
JUST to run the OMP
( the original analog s4 ECU will run the motor fine provided the injector ballast is omitted )

- many people have to pass a genuine emissions test, premix PITA will not help there

-EOMP saves 80 % oil consumption over s4 mech type , more with less


so whats acceptable to the s5 or s6 or s7 or s8 owner with a microwreck?

fitting the mech OMP and s4 TB is not an option for s6 onwards is it??
( and its a major cost, parts find and PITA for the s5 owner )
what are you going to do with that s4 timing cover with FD ?, swap it on?
what are you going to do for the original crank sensor?
and no linkage on TB ?

let alone work out the cost of the labour to drag the engine to fit all this 10 year older mech OMP

for less than $100 i can make it go, hook up 5 or 6 main wires
( load and rev version )
and the 9 OMP wires themselves
and you have an E OMP that works, with load logic
( the flash programmer not included in basic package, but will make a trim pot for +/- 20 % )
( and also provide a flash programmer port to make the logic entirely customizable )



not so stupid now is it?

bumpstart

gudday anth
i got tired of my mail box full of the same old questions from people too lazy to search for themselves

so i thought i would look at the US sites and maybe get a bit of intellectual stimulation

i think that may have been an optimistic outlook

ITSWILL

iTrader: (12)

Thats all nice but im pretty sure this thread is about a guy who runs premix and wants to get rid of his OMP all together.

While what you are talking about is interesting and useful in many circumstances, Im not sure i see the relevance in this thread.

If you could emulate the stepper motor, the ECU should be none the wiser.

bumpstart

my reply is to this post in the thread
you can now pick your choice of ECU, and no longer worry about premixing
or having a need for ECU with stepper abilities

fooling the s5 ECU so that it believes it has a EOMP , because your premixing
is akin to unbolting your engine and hooking up reins for horses

if you have a s5 motor and ECU
then the OMP already works, with 80 % less oil consumption than the previous motor
it also puts the oil where proven needed, the apex seal crown
( and yes i have the data that shows direct relationship with OMP output and seal temperature at load )
not like premix with a full racing mix at all times , all uselessly over the rotor face
( why do you think mazda stuck with OMP, and deleted premix in the bowl in 1970? )

why delete the EOMP for premix in FC or FD?

i cant really see the logic in totally disconnecting the EOMP
with FC or FD , leave it be, and premix lightly if you have 400 hp
( granted a s5 turbo retrofit into early gen 7 with 12a timing cover but running s5 ECU will still need to be fooled, or aftermarket ECU , or s4 ECU )

OK
maybe your motor has higher output than the intended 200 - 250 hp flow at 128: 1 at load the OMP is intended for
or maybe your running a motor in
or maybe you know your racing heavily this meet
- this sort of aftermarket set up is programmable , and also readily but broadly adjustable with trim pot
for those with 400 hp, they can add a tiny amount of premix over and above that needed to make up the 128:1 the omp can supply at around 250 hp



the apex seals will still get oil directly as intended
the motor will have adequate oiling for 400 hp air-flows
the motor will not be excessively oiled and wasteful at all other rpms other than load
your wallet, and the environment will be happier

ITSWILL

iTrader: (12)

OK now i see why you where you are coming from.

I agree, I would just premix and leave the EOMP in. I don't know why he would want to take it out, but then again it is his car and it was just a question.

Aaron Cake

iTrader: (1)

No, I just can't think of any reason why I personally would ever need to do this. I'd just use the S4 metering oil pump and associated front cover. However if I really needed to run the electronic metering pump, I would just buy an off the shelf servo controller, connect it to the TPS, and be done with it.

bumpstart

show me your vid of it working ????????
oh, hahahaha

so do you think something off the shelf will be scaled so as to work with the s5 TPS??
and do you think something off the shelf has a 5 V supply for your TPS?
does it have any calibration to stop any out of range hunt ?
( which will push the motor to limits and burn it out )
does it have gain frequency adjust to achieve a 1/4 decay sine pattern for proper PLC feedback control >?

there is a fair bit more to it than just some off shelf toy disk drive stepper controller

that's why all the "pros" with mouths bigger than brains
- have yet to do so with any cheap off the shelf toy kit

http://www.youtube.com/v/9oLAKZeQPZw
ps
you avoided getting out a small amount of cash and simply hooking up 11 wires
so as to add $100 worth of s4 cover, and $300 labour to do it right at the shop ( for most )
( and you still need the s4 TB )
whats the average FD engine owner to do ??? in a FD , he doesn't have your options?
( and probably sees the value in saving the labour charges in lieu of money for unit and hooking up 11 wires )

bumpstart

this is what is supposed to happen, mazda numbers
more, with less
( read up on how the s8 lifted its HP from the s6, you will realise the smart EOMP was integral with the improvement to ensure octane at high load )

we are but one step away from 3D map algorithm for the EOMP
( currently making a logic deck that has a MAP sensor and tacho counter and PWM drivers )

when done, it will replicate something similar to the mazda OEM s5 intention
( basic models is to emulate TPS position like s4, but with user trim function )

Aaron Cake

iTrader: (1)

Holy back from the dead...

I don't have such a thing working, and never will. As I mentioned if I had an S5 engine I would just swap on the S4 front cover and use a mechanical metering oil pump. I would replace the expensive and hard to replace electronic pump (which, lets face it, has a failure rate exponentially higher then the mechanical pump) with a mechanical unit and be done with it.

Go to your local industrial supply warehouse and pick up a catalog of servo controllers.

Well, yes. But I fail to see why you would need another 5V source when the ECU is already supplying it and you are just reading the voltage as the wiper?

You're kidding me, right? Seriously I'm trying to be a nice guy here dispite your attitude, but this is all really standard stuff. It's just closed loop stepper control. This is not complicated. Industrial applications out the wazoo, thousands of off the shelf controllers. And frankly, absolutely trivial to do with almost any microcontroller. Hell, a BASICStamp will do the job.

It seems as though you are very unfamiliar the contents of industrial control catalogs. These are hardly toy kits. Just Google "PLC stepper motor controller".

Acroy

iTrader: (3)

yowza... dead horse beating alert!!

those of you who find this thread (like I did a while back) searching for a clean way to go premix on your S5: the easy ways are

1) leave omp operational and premix anyway. i am. won't hurt nothin...
2) rtek. drop the $100 and it'll let you clean up the engine bay a bit. or better, get the $400 version & do some fuel tuning.
3) redneck option: stash the omp somewhere out of the way off the engine so the ecu is still happy....

that's all folks