cxn613 Posted October 13, 2011 Share Posted October 13, 2011 Whats the difference between the two? We have an AC engine in a 04 cx613 and have had our share of problems. Quote Link to comment https://www.bigmacktrucks.com/topic/21025-ai-and-ac-engines/ Share on other sites More sharing options...
rhasler Posted October 13, 2011 Share Posted October 13, 2011 AC has an EGR valve, external EGR cooler, VGT turbo, slightly different electronics. AI or AMI looks pretty much like the E-Tech CCRS, may have a similar design water pump as the AC engine though. The AI and AMI has an extra bump on the exhaust lobes to reintroduce exhaust gas into the cylinders on the intake stroke Quote "Mebbe I'm too ugly and stupid to give up!" Link to comment https://www.bigmacktrucks.com/topic/21025-ai-and-ac-engines/#findComment-88321 Share on other sites More sharing options...
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