Quote:
Originally Posted by radroach
Should we go into a D4S discussion? I find that between 1000-3500 rpm I'll get around 20mpg, and then it will go up to ~40-50mpg when D4S port injection starts coasting in the 3500-4000 range. Anybody else want to chime in on this?
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It is not that simple. Depends on a whole lot of other things, but D4S kicks in and generally uses more gas (not less) to generate even more HP with higher compression. I can get very good highway mileage too at 65-70mph while in 6th on flat highway (35+mpg). The best mpg I got was during my break-in period when I was trying to stay under 4000k.