Over the gauges lean limit @ idle. I haven't driven it yet, I'm too worried. I've been searching around the site for a while and I see that a normal idle AFR is 14.7. I did notice when I got on the throttle a bit it went to about 14.
Oh. Crap.
First of all, thanks to Ace (Grimsta / Zankoku Performance) for hooking me up with an AEM wideband and helping me install it. Today, I got the bung welded into the downpipe and finished hooking everything up. I've got my fuel pressure cranked up to 48 PSI with the AFPR. Now, I need to...
My way: 440cc injectors, Driftmotion Aeromotive AFPR (Adjustable Fuel Pressure Regulator) kit, APEXi AFC Neo, and Wideband oxygen sensor and gauge. Crank up 45 PSI of base fuel pressure, then lean it out with the wideband and AFC. Best way around FC IMO.
Under vacuum, the 1JZ is a fuel sipper. A 2.5 burns less gas than a 3.0 because less air in the chamber, less fuel required. Under boost, more air gets stuffed in and more fuel is needed. Duh. As Shadow said, if you build boost later, you'll use less gas. It's like comparing a GE to a GTE.
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