Originally Posted by
txarkitekt
It's probably the fuel pump. Go get a Walbro 255lph pump and go back to a stock fuel filter arrangement.
And if it surges to 55 then back to 50, the filters might have something to do with it... I'd check the filters first before I go off and redo my fuel delivery system...
i used walbro went through 2 of em ,junk in my book .i had to do the work ya know .i wanted accesability.ive got a 1500 dollar pump setup im not going backwards.if you drop a few tanks it pisses ya off.dont mean to sound like a jerk i appreciate the help.it does surge though .maybe i collapsed a filter or it is dirty .ok keep em coming.
mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
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