93 or 89 octane in a 5.9 Jeep ?
Senior Member
Joined: Jan 2010
Posts: 704
Likes: 1
From: Mt. Iron, MN
Year: 96 Limited ZJ
Model: Grand Cherokee
Engine: 5.2 w/mods
My biggest difference I noticed was the upgrade to the Live Wires, Screamin Demon coil, brass terminal cap and rotor, Autolite 3923s, free flowing exhaust and cold air intake. I have since added a 52mm TB and 24lb/hr injectors. Much better spray pattern with new injectors (4 hole vs. 1 hole on stockers).
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