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#7: 11-15-2012, 12:01 AM
Title: Senior Contributor
Location: Chicago, IL
Car: 08' spec B
Posts: 713
iTrader: (10)
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what the hell are you guys talking about ? I am not asking about temperature variations. I am talking about different chemical composition of fuel! Map doesn't know that so it can't compensate for anything.It can react by pulling timing when knock is detected. Not exactly the best approach is it? It like tuning for 93, putting 91 in and hoping for the best. Again my question is: based on the assumption that winter gas is more knock resistant, should cars be tuned on summer fuel only?