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Fixing code 27 MOP(general) on a 91 na!!

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Old 04-16-09, 10:11 PM
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Fixing code 27 MOP(general) on a 91 na!!
I have a S5 91 na vert. Can anyone help me out fixing code 27MOP (General) - Basic Fuel Injection and fixed timing. If i rpm the engine up to 3500rpm the check engine turns on and engine doesn't work quite good.. I've scanned the ECU after that and gave me that code. If i disconnect the OMP and use premixed i can solve the problem, right? thanks!!
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Old 04-16-09, 10:26 PM
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I don't think you can disconnect omp on s5. It goes straight into limp mode.
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Old 04-16-09, 10:28 PM
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You would have to replace the MOP to get rid of the code. you cant just disconnect it, the code will still be there.
You can either go to a standalone ecu, or use Rtek ecu stage 2 flash to get rid of the MOP completly.
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Old 04-17-09, 02:05 AM
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The waiting game......

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Or just use the omp... But I also have one for sale if you need one.
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Old 05-13-13, 07:12 PM
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ok So i know that this is an old post, but how much would it be to get a new MOP
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Old 05-13-13, 10:50 PM
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whats going on?

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brand new from mazda? probably $1000+
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Old 05-14-13, 12:23 AM
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I deleted my MOP...I use a Sham-Wow!
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Old 05-14-13, 12:41 AM
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Lapping = Fapping

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I used Kool Kreem

Now my mop is 20% cooler

Looks more like Fluttershy or Skrillex actually.
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