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Message: <blockquote data-quote="94twinscrew" data-source="post: 117722" data-attributes="member: 8280"><p>Well,the fmu that came with the kit could have been a 8:1 or 10:1 ratio,which combined with the 255lph would have put your fuel pressure above 80psi or higher depending on boost level.(which makes it a PITA to tune) Most tuners like to just rely on base static pressures for ease of drivability,and max optimal injector performance when running larger injectors....so there is no need for an adj regulator. Especially when our regulators are a true 1:1 ratio,which means for every pound of boost,you will see an extra 1psi of fuel pressure. So with stock pressure at idle being 30-35psi,and out of vaccum being 40psi.....at 10 psi of boost,you will see 50psi of adjusted fuel pressure. Consider it a mini FMU.lol Adj regulators are pretty useless now a days,especially when fuel flow can be controlled by a tune,the same can be said about FMU's....they're more of a bandaid than a needed part.</p></blockquote><p></p>