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Discussion Starter · #1 ·
I have an Auto Prelude Si.
in first gear at full boost its 7lbs.
the auto holds boost (unlike sticks) but it drops it to 5lbs max. in 3rd it goes up a bit to 6psi.
can any other Auto Turbos explain this?
 

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Discussion Starter · #5 ·
When I went to the dyno the AF gauge went out while on my car. So I cant tell exactly what Im running at A/F wise. I have the Vortech FMU with Fuel Pump. I think it might be the tranny too.
 

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Discussion Starter · #9 ·
Its like this.. On a stick when you shift it blows off and then reboosts to get to the desired level. On an auto tranny it builds boost and when it shifts it doesnt blow off if your flooring it.
It shifts to the next gear and slightly drops to 1-2psi and stays there until the next shift when it goes up again.
My guess is that when it drops to a lower RPM after it shifts the fuel pressure changes causing the change in boost. But why it doesnt build back up to the max boost is beyond me.
 

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check your waste gate it might be bleeding off pressure also check all the vacuum lines if any are loose you may be also loosing pressure there.
 

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how would the plugs look if you are running rich or lean?
 
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