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I'm currently running 8:1 as the 6:1 had me running too lean (14:1 a/f is WAY too lean at WOT) This was with the Walbro pump.opron said:what ratio should you buy in a Vortech FMU??? 1:1 , 4:1 ???? for a 5mgte set up??
http://www.celicasupra.com/phpBB2/viewtopic.php?t=4006