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Message: <blockquote data-quote="MrNismo" data-source="post: 117898" data-attributes="member: 13">Zephuros, have you tried to raise the fuel pressure? Is the meter a in dash type or mounted on the regulator? Did you monitor the fuel pressure during full boost? When you checked the timing with the timing gun, did you make sure the direction of the timing wire that pass through the clip is correct? I've heard that different direction give different results.47psi of fuel pressure during full boost is bad. Rising rate fuel pressure regulator regulates fuel pressure according to boost. So if you're boosting 0.7bar, and your fuel pressure with vacuum unplugged is 3.2bar, fuel pressure during 0.7bar of boost should be around 4.0bar. If it drops back, it could mean that the fuel pump is not pumping enough volume of fuel, or the regulator is weak.Btw, depending on the A/F monitoring device you're using, it might not give you accurate result. Have you try to plug in a wideband lambda sensor? What ECU you're using btw?</blockquote>

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