Quote:
Originally Posted by Skeeterbop
It could be possible for them to have 2 maps programmed, one for premium and one for regular. If Ford could do it on my 93 Lightning, I don't see why manufacturers can't do it now.
Another thing to consider about efficiency is the cars 20 years ago were generally lighter as well.
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That is true. The SR only had move like 2300 to 2400 lbs or weight in that old sentra. I wish I could find some information regarding the mpg of the late model 180sx with the 250hp sr20 since it weighed 2700 lbs. That would be a pretty good comparison.
I would just be concerned about engine knock with running regular fuel on a compression ratio that high, but maybe the newer technology engines allow it?
Quote:
Originally Posted by m4a1mustang
You are correct. It's rated to "about" 400hp on 87 and 412hp on premium.
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This is what I was trying to alude at I guess. If that engine requires premium to make the 200 hp, then the regular is going to be less.
