The best results I've had with various manual transmission vehicles has with pulse and glide from 30-45 EOC back down to 30 repeat. I try to drive as close to this as my situation and time permit.
In my experience, pulsing over 60mph will generally have a negative impact on your economy no matter what else your doing. Since you have an Ultra Gauge you should be using engine load % to help you determine how hard to accelerate for most efficient results. I find 69-71% load yields optimal results in my 3.4L Tacoma while around 85% is better in my Dad's 96 Ford Aspire.
Unless you can find a bsfc chart you will have to determine this through trial and error.
In ideal conditions I can get over 40mpg in my 4x4 v6, but conditions are rarely ideal!
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