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trito

01-13-2008 02:39 AM

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.

cjernigan

01-13-2008 02:43 AM

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.

trito

01-13-2008 02:53 AM

nope rpm seems pretty stable even at idle.

cjernigan

01-13-2008 02:58 AM

What engine management, injectors, all that good stuff?

trito

01-13-2008 03:30 AM

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

compy

01-13-2008 07:08 AM

Quote:

Originally Posted by trito (Post 198265)

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.

em99sport

01-13-2008 01:23 PM

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.

trito

01-13-2008 02:45 PM

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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