lostsoul Posted February 26, 2017 Report Share Posted February 26, 2017 Have installed a new FP Reg. (Turbosmart 1200hp) .... setting the Fuel Pressure, the lowest I can get is 3.02Bar, when I connect vacuum it drops to about 2.3ish Bar ... is this normal?? Quote Link to comment Share on other sites More sharing options...
Adamw Posted February 27, 2017 Report Share Posted February 27, 2017 Hi Lostsoul,Yes this sounds correct. A typical FPR should vary fuel pressure 1:1 with MAP. So if you apply 70Kpa vacuum to the diaphram the fuel pressure should drop by 70KPa. If you put 1bar boost into it then the fuel pressure should increase by 1bar. Quote Link to comment Share on other sites More sharing options...
MagicMike Posted February 27, 2017 Report Share Posted February 27, 2017 Not being able to adjust pressure down lower than 3 bar isnt ideal, I can drop mine to nearly nothing. But factory askes for 3bar without manifold reference, so it is on spec. Quote Link to comment Share on other sites More sharing options...
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