MAP jumping up and down - help needed

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Mar 27, 2016 | 03:09 AM

elior77

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From: Israel

MAP jumping up and down - help needed

Hey,

Got some none stable map - where to look first ? BOV ? vacuum leak ?

The peaks are 185kpa~ the lows 177kpa~

95 turbo miata
T28
DIYPNP
460cc
GReddy Profec EBC set at 12psi~(180kpa)

Thanks !

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MAP jumping up and down - help needed-80-capture_5d442f9ca70f28936ad484c45c025f5b4eaba24b.png

Mar 27, 2016 | 11:48 AM

squeegee

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Where is your map line attached?

Mar 28, 2016 | 06:36 AM

elior77

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From: Israel

Intake manifold after the TB

Mar 28, 2016 | 11:04 AM

squeegee

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Quote:

Originally Posted by elior77

Intake manifold after the TB

I hear there's turbulence there so teeing off the fuel pressure regulator is better.

Mar 30, 2016 | 02:39 PM

stefanst

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Could be caused by closed loop boost control.

Mar 30, 2016 | 02:49 PM

Savington

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Quote:

Originally Posted by stefanst

Could be caused by closed loop boost control.

This is my vote. The "noise" is only in boost. Noisy MAP signals are always noisy.

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