morgan Posted July 7, 2016 Author Share Posted July 7, 2016 Okay so I have got a FPR and a 255 pump and going to be fitting today.The car is going to be mapped in about 2 weeks time so want to get these on before hand.I'm going to be setting the FPR at 2.4 bar as this is what people are saying stock pressure is.Should I set it at this with car turned on and vacuum line connected? Thanks Quote Link to post Share on other sites
5e colin Posted July 7, 2016 Share Posted July 7, 2016 dont set it til the engine is roasting hot !!!! as it has an effect on the fuel pressure yes disconnect the vac line to it and block it or you will have high idle Quote Link to post Share on other sites
Johnboy GT Posted July 7, 2016 Share Posted July 7, 2016 Ah you hero Colin, I set mine with the vacuum line connected and couldn't understand why I have a high idle that settles out eventually. I'll be trying this at the weekend then!John Quote Link to post Share on other sites
5e colin Posted July 7, 2016 Share Posted July 7, 2016 ^^^ ya you want the base pressure not altered pressure by boost or vacuum Quote Link to post Share on other sites
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