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stangGT95 · 06-30-2003, 10:22 PM

I've recently upgraded my 95 GT with some intake and exhaust parts only now the check engine light comes on. The upgrades include MAC cold air induction, 65mm throttle body, adj. fuel regulator (42psi), 1 5/8" unequal headers, Prochamber h-pipe, Borla catback exhaust, new O2 sensors, PCV valve and a digital air/fuel gauge. The error codes say lean mixture left and right banks and a grounded SPOUT circuit. The air/fuel is .14 at steady throttle, .98 as soon as let off gas, then down to .03 after coasting a bit. I don't see any vacuum lines off. Am I missing something simple? Has anyone had an experience like this?

06-30-2003, 10:22 PM	#1
stangGT95 Registered Member Join Date: Jun 2003 Location: Novinger, Mo Posts: 72	Running Lean I've recently upgraded my 95 GT with some intake and exhaust parts only now the check engine light comes on. The upgrades include MAC cold air induction, 65mm throttle body, adj. fuel regulator (42psi), 1 5/8" unequal headers, Prochamber h-pipe, Borla catback exhaust, new O2 sensors, PCV valve and a digital air/fuel gauge. The error codes say lean mixture left and right banks and a grounded SPOUT circuit. The air/fuel is .14 at steady throttle, .98 as soon as let off gas, then down to .03 after coasting a bit. I don't see any vacuum lines off. Am I missing something simple? Has anyone had an experience like this?