Quote:
Originally Posted by thambu19
You can expect to get 5-10% better VE with heavy scavenging at the most from what OEMs already have calibrated to. So seeing super high AFRs means its not real. On E85 you dont have to scavenge a ton because engine isnt knock limited on E85. Half the benefit of scavenging is VE improvement and other half is knock relief which you dont get on E85 since it is already knock free
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Got ya! In CL operation while running 91 petrol it's been pretty solid (much less aggressive overlap) aside from your typical tip-in and medium load knock correction in the 2600~3200rpm range. It's actually quite annoying since that where you spend the most time putting around town, but it seems no amount of enrichment or timing retard can get rid of it completely. So, most of us just let the ecu do it's thing and dial back the IAM now and again. I seriously wonder if it's real knock that the knock sensor is picking up, or some sort of "phantom knock."
Since you say the E85 doesn't require as much scavenging, how would you adjust the cam timings according to the earlier log I posted? Slower ramp up to the overlap at WOT?
You probably wont get the reference but...
