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Old 01-13-2008, 03:39 AM   #1
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Default Bouncy WBO2 numbers

Hi guys,

I have a Zeitronix WBO2 and the reading I get fluctuate a lot. At idle it floats around 14.5-18.5 and sometimes spiked to 25-26. Under boost it bounces around 11-14. Could a vacuum leak cause this?

Thanks,

t.t.
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Old 01-13-2008, 03:43 AM   #2
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Does the RPM fluctuate as well? Surging idle means a vacuum leak or too lean of a fuel mixture. Both will cause it to surge.
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Old 01-13-2008, 03:53 AM   #3
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nope rpm seems pretty stable even at idle.
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Old 01-13-2008, 03:58 AM   #4
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What engine management, injectors, all that good stuff?
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Old 01-13-2008, 04:30 AM   #5
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Greddy manifold/turbo
RX-7 IC
1.8 injectors (testes and cleaned)
BEGI AFPR
Duel feed fuel rail
EMB with Autotune
Profec A Boost controller
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Old 01-13-2008, 08:08 AM   #6
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Quote:
Originally Posted by trito View Post
Greddy manifold/turbo
RX-7 IC
1.8 injectors (testes and cleaned)
BEGI AFPR
Duel feed fuel rail
EMB with Autotune
Profec A Boost controller
Well there is your problem.
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Old 01-13-2008, 02:23 PM   #7
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What he said might be correct, but I've found that placement of WB too close to turbo can lead to fluctuating numbers on gauge.
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Old 01-13-2008, 03:45 PM   #8
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oh I forgot to add that I have a RM DP so the WB is located pretty far from the turbo.
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