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Registered
Join Date: Jul 2008
Location: Newfoundland, Canada
Posts: 514
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Very good point Russell, in my region of the country I can only get 87, 89, or 91 Octane. So I regulary use 91. But if I travel to a region where 93/94 is readily available I obviously want the option to use mapping appropriate for that.
I really would like to hear to hear more hard core examples of the differences in the performance of the two chips. Are their horsepower gains with both? Where in the RPM range are they both most effective. What are the pros and cons of each?
Wavey, maybe you could weigh in here more based upon your experience.
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1984 911 Coupe
2007 Z4 M Coupe
2008 Cayman S
2004 M3-Alpine White(sold)
2002 M Roadster (sold)
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