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3.8LMustang · 05-02-2008, 07:11 AM

ok as yall know i have a XCal 3 tuner n on one of the settings it says that you can turn the egr valve on or off. So should i leave it on or off. This is wat ive read on Wikipedia "In most modern engines, disabling the EGR system will cause the computer to display a check engine light. In almost all cases, a disabled EGR system will cause the car to fail an emissions test, and may cause the EGR passages in the cylinder head and intake manifold to become blocked with carbon deposits, necessitating extensive engine disassembly for cleaning."

Is this true? So should i turn my egr valve off or leave it on?

05-02-2008, 07:11 AM	#1 (permalink)
3.8LMustang Senior Member Join Date: Apr 2008 Location: Corpus Christi, Texas Posts: 520	EGR Valve On/Off ? ok as yall know i have a XCal 3 tuner n on one of the settings it says that you can turn the egr valve on or off. So should i leave it on or off. This is wat ive read on Wikipedia "In most modern engines, disabling the EGR system will cause the computer to display a check engine light. In almost all cases, a disabled EGR system will cause the car to fail an emissions test, and may cause the EGR passages in the cylinder head and intake manifold to become blocked with carbon deposits, necessitating extensive engine disassembly for cleaning." Is this true? So should i turn my egr valve off or leave it on? __________________ 1996 Mustang Aluminum Driveshaft , 1/2" Intake Manifold Spacer, 180 Degree Thermostat, SCT XCalibrator 3 Mustang X3 Power Flash Tuner, Port and Polish Upper Intake Manifold, BBK Underdrive Pulley Kit, Aftermarket Cold Air Intake, 3" Exhaust Tips, PYPES Stainless 2.5" True Dual Converter Back, w/o Cats, Pypes Street Pro Mufflers, Screamin Demon Ignition Coil, 10mm Livewire Spark Plug Wires (Red)