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Message: <blockquote data-quote="Lan Dugong" data-source="post: 1767354" data-attributes="member: 2152">B8t_ford,already replied in the plugs thread.:-<a href="http://www.zerotohundred.com/newforums/showthread.php?t=119808" target="_blank">http://www.zerotohundred.com/newforums/showthread.php?t=119808</a>here's the copy:-B8t_ford,this is what i have experienced.when i was with vj20 turbo, i've been running 35psi of fuel pressure at 1.2bar. No problem of fuel leaning out.playing with fuel pressure will experience in higher fuel consumption as fuel was not burnt fully and gone as wastage...this will also create carbon. but at the same time, u are actually running at a safe mod but lose of power due to rich mixture.imagine u are running at 42psi with 0.8b/1bar boost with vj20 or vj23 together with colder plugs....u will feel a little laggish.i know someone whose running a very big turbine in 180 but 30psi fuel pressure with the help of high flow fuel pumps & big injectors and he's running 1.5bar!u want good fuel pressure at high boost? upgrade your fuel pumps. this is actually the rule of thumb. without good fuel pumps, although u set to 50psi fuel pressure, what you get is high fuel consumption at low end but during higher rpm and higher boost, u might lean out due to fuel pressure drop. more over, your injectors suffer due to the high pressure.the best pressure of fuel? depends on your setup, your boost & your fuel pump. for me 35psi is good with vj20 1bar and below provided fuel pump upgraded to higher flow like walbro or rb25/rb26 etc etc</blockquote>

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