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BOLT-ON EFI SYS­TEMS HAVE COME A LONG WAY IN THE LAST DECADE, AND HOLLEY’S LAT­EST THROT­TLE-BODY SYS­TEM DE­LIV­ERS

Mustang Monthly - - CONTENTS -

Bolt-on EFI sys­tems have come a long way in the last decade, and Holley’s lat­est throt­tle-body sys­tem de­liv­ers

WHEN FAC­TORY ELEC­TRONIC FUEL IN­JEC­TION (EFI) FIRST HIT THE MUS TANG IN THE 1980s, MANY EN­THU­SI­ASTS FELT IT WOULD BE THE DEATH KNELL FOR PER­FOR­MANCE. Lit­tle did any of us know at that time that there was re­ally noth­ing to worry about, and that we’d have Mus­tangs to­day rolling off the assem­bly line in ex­cess of 400 horse­power (and more for spe­cialty mod­els like the su­per­charged Shelby GT500s from 2007-2013). Sure there were some prob­lems early on as own­ers and the per­for­mance af­ter­mar­ket fig­ured out these OE sys­tems and how to get the most out of them, and the same can be said for af­ter­mar­ket bolt-on EFI so­lu­tions.

Over the years, the op­tions to con­vert your car­bu­reted en­gine to EFI have been many. From us­ing the in­take, in­jec­tors, wiring, and sen­sors from the ’87-’93 Fox Mus­tang to early throt­tle-body in­jec­tion (TBI) units based off of GM truck units, there al­ways seemed to be teething prob­lems and a learn­ing curve. How­ever, over the last five years or so the bolton EFI game has re­ally en­tered the next chap­ter, if you will, al­low­ing any­one with ba­sic me­chan­i­cal abil­i­ties to be able to en­joy the ben­e­fits of mod­ern fuel in­jec­tion on their clas­sic Mus­tang.

01 The Holley Sniper EFI sys­tem is a com­plete bolt-on EFI so­lu­tion. All you have to do is sup­ply an EFI-ca­pa­ble fuel sys­tem, which Holley can help you with as well. In­cluded in the Sniper 4150 SelfTun­ing EFI kit is its cast throt­tle body (avail­able in black, gold, or pol­ished fin­ishes), wide­band O2 sen­sor, hand­held touch­screen con­troller, and all nec­es­sary wiring—PN 550-511 is shown.

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