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Old 01-30-2008, 08:59 AM   #4 (permalink)
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The problem with low load EGR is irregular combustion. An EGR cooler would be a good start IMO, but even if we could avoid pre-ignition stable combustion may still be a problem due to the proportion of exhaust gasses to air/fuel needed to minimize pumping losses at low load with MPFI. If ya g00gl3 GDI you'll likely find some interesting stuff.
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