Reply to "Idle Rumble"

jfb05177Member

the effect of aggressive overlap results in exhaust gas going into the INTAKE at idle.

Back at the introduction of SMOG control, the primary device added was the EGR (exhaust gas recirculation). at high load, this valve would allow exhuast gas to be mixed with the intake to reduce combustion temp and NOXs.

While all the performance guys were blocking off the EGR, I replumbed the vacuum hoses so mine would open at idle, giving me the rough idle of a radical cam. all show and no go! (Charger 318 2bl)

2/1/185:43 AM

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