2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

S5 MOP disable write-up please!

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Old Jan 22, 2005 | 10:48 AM
  #26  
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Originally Posted by Aaron Cake
Ha! Think $300 and up. And if you think that is expensive, grab your local yellow pages and look up "electronics enginner". Find a local firm, give them a call and explain your problem to get an estimate.

Remember, the cost of producing a QUALITY part is enormous. Designing the circuit is not a big deal, programming the micro is not a big deal. But tooling up to produce a quality case, PCB, sourcing connectors and TESTING under ALL circumstances is a huge undertaking. And that's not even considering the cost of the parts, troubleshooting "dud" circuits, etc.

the device should be sellable in the $100-$200 range with a profit. It is not fair to tell someone to consult a local engineering firm to have one made for them, because they would own the product then, they would be paying an engineering firm as a consultant to develop the product for them and they could go sell hundreds of them.

Hopefully, you would invest some time and money in developing the product and sell hundreds of them at a reasonable price per unit, while making a profit yourslef.

Engineering firms do not 'tool up' to produce these things, that would be absurd. It's subcontracted to firms which specialize in circuit production, abs molding for cases, and certification for testing. Places which are already tooled for and specialize in this type of work, the engineering firm simply designs & develops the product, the production run is all handed off and done in quantity.

I'm currently in a contract job for such an engineering firm, I have been hired to handle the software (architecture and programming) end of a linux based human machine interface panel on a form of vending machine. The firm doesnt make anything themselves beyond simple crude prototypes out of non-production materials (I'm talking plaster and cheap sheet metal hacked together for concepts and test fitting). Almost everything is out sourced, otherwise they wouldnt be capable of producing anything, the overhead of tooling to be a DO EVERYTHING shop would be too much and put them out of business before they produced a single thing, it's unrealistic. Most the companies that do the production work also permit quite large balances of debt while the product is being developed which get paid off after it starts selling.


You do however have a point with the FC owners being cheap, you could do all this work and accrue alot of debt developing the product and you won't sell much, unless it's very well priced which is a requirement with this market. What about the FD market though?
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Old Jan 22, 2005 | 02:38 PM
  #27  
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you dont have to zip tie it in the engine bay. get yourself a block-off plate from k2rd, remove the omp and lines, take a pair of plieres and yank out the littl worm gear/oil pickup that extends int the block, then just bolt it back over the block off plate. looks much cleaner this way.
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Old Jan 22, 2005 | 03:44 PM
  #28  
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Originally Posted by andrew lohaus
take a pair of plieres and yank out the littl worm gear/oil pickup that extends int the block
Do not try to do this, if you are referring to the shaft that drives the MOP which sits inside the front cover, you cannot simply yank it out. There is a gear on the end of it that is retained with E clips, to remove the shaft you must remove the front cover and take off the E clips first, so the gear can slide off the shaft, then the shaft comes out.
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Old Jan 22, 2005 | 04:16 PM
  #29  
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Originally Posted by pengarufoo
the device should be sellable in the $100-$200 range with a profit. It is not fair to tell someone to consult a local engineering firm to have one made for them, because they would own the product then, they would be paying an engineering firm as a consultant to develop the product for them and they could go sell hundreds of them.
If I could sell 10,000 of them, then yes, $100-$200 is a reasonable amount to charge. But the odds of selling that many is very low. I figure at the most that I would sell 10, maybe 15 over the next few years.

I'm sure you can appreciate the kind of cost, effort and TESTING that goes into a product that must survive in automotive conditions.
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Old Jan 23, 2005 | 03:45 AM
  #30  
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heh - this is on my list as the first S5 mod. The mod would be to remove
the limp mode for the MOP from the ECU (codes 20, 26, 27 and 37). Then
you could just unplug the MOP and leave it or remove and install a
blockoff plate.

I did up a proto modded chip a while back but never got around to
testing it. If there's enough interest I can put this next on the list
after getting the Rtek2.0 done (in testing now!). Pricing will likely be
the same as the current 1.5 ($95 self, $115 installed).

Anybody in Vancouver willing to test in exchange for one installed free
drop me a pm. I'de be ready in about a month or so for an NA version,
TII would be longer as I haven't dug into that code yet.

-Henrik
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Old Jan 23, 2005 | 03:54 AM
  #31  
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Henrik, I'm not qutie sure what you are talking about. Are you talking about the same thing as Aaron Cake or something else entirly?
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Old Jan 23, 2005 | 03:59 AM
  #32  
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something else entirely, He is refering a chip that you could put in your ecu. Aaron is refering to a chip/device that you put on your OMP wiring harness for the S5 to fake the ECU into thinking its still working.

Just curious, but why don't you take the electric omp apart, take out the circuit board with the harness connector, put it in a sealed box, and mount it on the firewall with it plugged in? would this be good enoughe? or does the cpu know that the motors are not there?
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Old Jan 23, 2005 | 09:28 AM
  #33  
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The ECU needs to see the feedback from the motor. The ECU moves the stepper motor, then checks an encoder to make sure it is now where it expects it to be.
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Old Jan 23, 2005 | 09:37 AM
  #34  
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Solution: Get a standalone



Question: Do aftermarket reprogammed ECUs detect the OMP too?

Last edited by Valkyrie; Jan 23, 2005 at 09:40 AM.
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Old Jan 24, 2005 | 12:25 AM
  #35  
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No, I'm talking about modifying the code in the ECU so as to ignore
a failure (or lack of) the MOP. This entails replacing the ROM chip
in the ECU. Nothing would have to be added elsewhere.

-Henrik
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Old Jan 24, 2005 | 01:15 AM
  #36  
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hinrik you hit it.. you make that possible and you've got your first one sold.... what other things could we add to the na chip better mapping>10,000 ???
put the lt12 in the turbo car. can't have both
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Old Jan 24, 2005 | 03:14 AM
  #37  
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Oooooh, ok. I get it now, thanks all. Thats an awesome idea Henrik and I am also curious as to what else could be done to the mapping, like astrochild7 said.
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Old Jan 24, 2005 | 03:45 AM
  #38  
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Here we go again....

Remember that one guy who had a year off and was gonna do the same thing...

lost cause folks, trust me, too much R&D
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Old Jan 24, 2005 | 10:57 AM
  #39  
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It's not a lost cause to hack the code, henrik will probably do it first... then what, foot in mouth? Circumventing it @ the ECU level in the code is the best option and not much work.
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Old Jan 24, 2005 | 12:06 PM
  #40  
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Originally Posted by BlaCkPlaGUE
Here we go again....

Remember that one guy who had a year off and was gonna do the same thing...

lost cause folks, trust me, too much R&D
Considering the fact that Henrick already has released several chips for S4s, I don't think him releasing a chip for the S5 is a lost cause. It would be a HUGE service to everyone with an S5. It will save tons of time and money. My car was undriveable for several months due a bad OMP. Its getting very difficult to find working replacement OMPs (that are reasonably priced at least), and you also often have to replace the entire ECU when the OMP goes. This would be the first mod on my list if I didn't get a Haltech...
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Old Jan 24, 2005 | 03:00 PM
  #41  
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I am in favor of somebody hacking the ROM chip inside the ECU. That is the BEST way to handle the issue. Once the programming is known then a lot of ECU/CPUs can be modified.

Henrik, send me a BETA, I'll test for you.
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Old Jan 24, 2005 | 03:05 PM
  #42  
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Second, Straghten a Noob out

OMP or MOP The Faq says both are correct.
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Old Jan 24, 2005 | 04:12 PM
  #43  
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Originally Posted by pengarufoo
Do not try to do this, if you are referring to the shaft that drives the MOP which sits inside the front cover, you cannot simply yank it out. There is a gear on the end of it that is retained with E clips, to remove the shaft you must remove the front cover and take off the E clips first, so the gear can slide off the shaft, then the shaft comes out.


there must have been some misunderstanding. you dont do anything involving the front cover for what im describing.

you are pulling out the little shaft that sticks out of the omp, not the front cover. this shaft WILL pull out with just a good pull from a pair of pliers (it engages a worm gear and is only a friction fit). ive done it twice and even put it back in to make sure it didnt screw anything up. you just do this so the omp can be remounted flush over the block-off plate
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Old Jan 24, 2005 | 07:54 PM
  #44  
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Either MOP or OMP are correct. I think the FSM referres to it as the MOP so that's why i use it. You, however, can use whichever your little heart desires.
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Old Jan 26, 2005 | 01:44 AM
  #45  
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Originally Posted by jhammons01
I am in favor of somebody hacking the ROM chip inside the ECU. That is the BEST way to handle the issue. Once the programming is known then a lot of ECU/CPUs can be modified.

Henrik, send me a BETA, I'll test for you.
you have pm

-Henrik
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Old Nov 7, 2005 | 05:51 AM
  #46  
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premixing is good for all rotaries including the infinis?
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Old Nov 7, 2005 | 10:53 AM
  #47  
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Premixing works for all rotary engines.

Whether it is better then the metering oil pump is a subject under debate.
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Old Nov 7, 2005 | 11:43 AM
  #48  
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I feel it is as long as your mixing properly.
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Old Nov 8, 2005 | 03:53 PM
  #49  
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A lot of people feel things. But no one yet has invested the time and effort Mazda has regarding the oiling system.

It's a long argument, that's been going on for many, many years. I don't premix any of my RX-7s. Never felt the need to do so UNLESS I'm beating on the car all day at the track. Then a little premix never hurt anything...But that's in combination with the stock metering oil pump.
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Old Nov 8, 2005 | 06:11 PM
  #50  
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Henrik:
If that is Vancouver, BC (as opposed to Vancouver, WA), I can test 2 sets of those for you on two different cars.
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