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MAS and EGR CEL

Old 09-09-2007, 04:04 AM
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Default MAS and EGR CEL

Yes, another newb question, maybe someone can help me out. So my car (99 turbo miata on FM piggy back) is finally running right and I was tuning up for 12psi, I got to messing with the profec b s2 and finally got it to hold a steady 12 psi, took my eyes off the tach and **ouch** popped the rev limiter ever so slightly. Now I have a CEL that reads "MAS voltage too high" and "EGR flow insufficient". I can clear the code but as soon as I boost it again it comes back on. So my question is....WTF!?

I dont know how hitting the rev limiter would throw that code, maybe it was just the 12psi, who knows?
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Old 09-09-2007, 12:44 PM
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someone has to know something
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Old 09-09-2007, 01:01 PM
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Sounds like the MAF was maxed out and the egr showed to little flow.
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Old 09-09-2007, 01:48 PM
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Probably a 5V supply problem... I think the EGR and MAF are tied together.
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Old 09-09-2007, 02:35 PM
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Originally Posted by magnamx-5
Sounds like the MAF was maxed out and the egr showed to little flow.
What a pal.

But what do you mean a 5v problem, how can I fix it. I mean the car doesnt run weird, I just hate a CEL, it will drive me crazy.
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