Thread: shift points
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Old 12-31-2010, 11:37 AM   #8 (permalink)
SentraSE-R
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Join Date: Jun 2009
Location: Bay Area, California
Posts: 1,485

Mean Green Toaster Machine - '06 Scion xB
Team Toyota
90 day: 48.92 mpg (US)
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I determined what worked best for my cars with trial and error - back to back tests using a Scangauge while varying my acceleration load. I couldn't find Brake Specific Fuel Consumption charts for any of my engines, so ABA testing was the only way to identify what works for me.

If Executive can find a BSFC chart for his engine, that's where he should start. Otherwise, I suggest buying an SG or an Ultragauge, so he won't be flying blind. 85% load works best for both my 2.5 l Nissan engine and my 1.5 l Toyota engine, but it's rapid acceleration on my Nissan, and very mild acceleration with my Scion. I have to use <70% load on my wife's AT Hyundai (2.0 l engine), because any more causes the torque converter to slip, 65% load on the Hyundai is like 85% on the Scion - very mild
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Darrell

Boycotting Exxon since 1989, BP since 2010
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? George Carlin
Mean Green Toaster Machine
49.5 mpg avg over 53,000 miles. 176% of '08 EPA
Best flat drive 94.5 mpg for 10.1 mi
Longest tank 1033 km (642 mi) on 10.56 gal = 60.8 mpg
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