This one:

The OMP position sensor switch, it's not available separate of the OMP assembly, you may want to research that some, a complete assembly may be your only option

I probably have an extra OMP assembly laying around...

Hey buddy, it would be great if you could find me a switch. I know it's just a poteniometer such as a tps,etc. The problem is is that I don't have a working one here to see what it puts out. I have older omp pumps which also have the setup but the wiring plug setup is backwards. I don't even have the original engine in there but I'm trying to get the stock dsc, throttle body and a couple of other things working. I may not even need it in the long run. Thanx!

I think I read somewhere in this thread that it is just a TPS off of another Mazda.

you can bite me down under :cwm27:

Ok, so I removed everything in anticipation of my OMP hoses and oil injectors arriving today. I figure I might as well pull the fuel injectors and have them cleaned and flow tested as well since I am in there and they have 119,000 miles on them.

I must say, the UIM is pretty clean and even looking into the LIM it looks clean as well. I guess running a WIX air filter is a good idea.

Question though, the senor on the OMP seems to be sitting all the way counter clockwise. Should I loosen the bolts and adjust it so the bolts are in the middle of the adjustment slots?

Edit:

For example, mine is positioned the opposite of this one and I have never touched those bolts previously.

https://www.rx8club.com/attachment.p...1&d=1182492219

it probably makes too much sense to leave well enough alone ....

I just wonder why mine is positioned the opposite of others? I guess I will leave it and we'll see how it works when I bolt everything back up.

if it ain't broken don't go and f-it up, you won't know for sure until you get it back together and get it up and running, unless you get limp mode then don't press your luck

Yeah I wasn't getting limp mode before so I will just leave it for now.

Thank the good Lord for the search function and this thread.

At 145k miles, I just had to replace my engine. Got everything all bolted up and turned the key to find instant limp mode. CEL lit but with no code (that I could pull with my laptop anyway).

Repositioned the OPM possition sensor by rotating all the way clockwise and then backing up just a little counter clockwise. No CEL and no limp mode! Woo hoo!

Now I'll just have to watch my oil level for the next few weeks to make sure the OPM really is working. At least I'm not in mystery limp mode land anymore.

Glad to see you got it sorted, definitely keep an eye on oil level.

bump, probably one of the most overlooked threads on the forum

to bad a Moderator hasn't made it a sticky.....

I don't necessarily agree with some of the earlier assertions about increasing flow, but the position relative to safe mode vs proper operation is important, mostly because the switch position adjustment isn't discussed in any factory literature

does anybody make OMP emulator (which will allow its elimination and still not trigger P1688 and limp mode?)

Just for clarification.....i am not asking how to lubricate, i am asking if somebody made emulator which will allow stock OMP be removed and fool ECU...

if somebody has one they are keeping it a secret ...

Should be far from impossible to make one if you do some electronics.

But as far as I've understood, you do not need a emulator, just leave OMP connected and out of the way.

I hope it was that easy I know my car feels way faster than it was before but the omp that I have on it now just limps the car out now and then I'm still able to get up on but the power just falls all making a stock rx8 feel faster than mine I have my omp just connected and out of the way but I know it's affecting my throttle response badly

What? Your posts are hard to read. You have your OMP disconnected and out of the way? If so, why?

Sorry if they are hard to read Im usually busy and I just reply without spell checking.

My OMP is still connected but I Just relocated to the side in my engine bay compartment. I just don't like the fact of how something so simple controls so much such as acceleration, throttle response and such.

Like I had to adjust it so I can get over 4k now, now I have a moment were the car accelerates and the rpms drop off preventing me of giving it gas. I know this because I had a stock rx8 eat me from comming off the line but when I'm moving i can pull away from him everytime.

But I'll be buying a Cobb to stop this problem..

Why did you relocate your OMP? Hopefully you researched the topic.

Has anybody attempted to relocate the omp?
For example a top mount turbo manifold will cause damage to it

Is it possible to just move it to another location and have lines for oil running down to the original location?