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the screw acts on a spring inside.....
you'll need to adjust it for air-release at higher psi
- just try different settings for optimum performance

* fuel psi:
should be set at standard factory pressure = 41-42psi
otherwise you'll get over-fueling

:)
 

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37psi is much too low ! ...who told you that ?
as mentioned, set it at 41-42psi..... with the vacuum pipe 'off'

the fuel regulator should be a rising rate/adjustable version so that the psi/flow rate increases through revs/boost range

also it's advisable to get the air-fuel ratio checked using a wide-band lambda
 

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Re: boost

carsevo99 said:
why the regulator duty cycle will call for more from uprated pump stendard reg should be ok
....not in an e1-3
standard regulator can't cope with higher flow rate of uprated pump
& so tendency to over-fuel
 
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