My omp is going out. What solutions do I have? A brand new one for a S5 is 1400. I could buy a jdm engine instead and have an omp, a turbo, and a whole F*** engine. I am really ticked off at my car and at mazda for selling the omp for the same price as a new engine. What is up with that? Any way sorry for the rant. Does anybody have any ideas?

 

You can buy a used OMP, thats what most people would do. The other option is to get rid of the OMP system altogether, and run premix.

 

I'd run premix and just have the OMP plugged in, it must stay plugged in for the car to run properly.

If the OMP is failing and causing the ECU to go into "limp mode" then you'll have to buy another one anyways.

 

sorry to hijack the thread but how do you know if the OMP is failing on a s4... i seem to remember somebody saying only s5's have the limp mode...

 

I'd sell you my S5 OMP, but I need it to keep the ECU happy.

Check the forsale section, they are avaiable all the time.

BTW: Premix all the way Though you're still screwed if its throwing you into limpmode.

 

How is it the same price as a new engine? I'd buy a dozen if I could get new ones for $1400.

 

im sure he means a rebuilt or a jspec engine.. not NEW from mazda

 

Yes, only S5's have limp mode, you gotta do the drip test per FSM for S4's. I don't have the book in front of me right now but I know it's not hard to do.

Premix is your friend

 

The only way to tell if your S4 OMP has died is when your engine blows up and you notice the apex seals have seized.

The S4 OMPs rarely go out, they're mechanically driven by a gear inside the front cover, the S5 or electric and is controlled by the ECU. The motor goes out on the S5 and send the ECU into limp mode...assuming the ECU picks it up, i've heard that on occasion it won't pick up the dead OMP.

 

well it's going it to limp mode

 

list cost on a six port short block is 1400 from mazda

 

thats a pretty low quality rebuild, though. They have pretty low standards for end plates and housings, if i remember right.

 

this is what i do using an OMP i got from a friend. works fine ziptied to my strut tower brace to keep the ECU happy and now i premix.