Thread: My new FR-S!
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Old 05-25-2016, 05:55 AM   #77 (permalink)
serialk11r
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spyder2 - '00 Toyota MR2 Spyder
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Quote:
Originally Posted by UltArc View Post
I can't remember if you mentioned this (I've followed along, but haven't reread this in a long time), but what is the cruising RPM? I feel like that is a bit low for the dimensions/weight of the vehicle/engine.
2600rpm @ 60mph ish, 3000 at 70. On cruise control it'll get 35-42mpg in that speed range. It shouldn't matter much for P&G since the engine is only being operated at high power, and peak thermal efficiency is in that range.

50mpg is low? IIRC last time I watched the mpg meter on a Prius, it was mid 50s at those speeds. The Prius engine is a bit more optimized for thermal efficiency. Like I said, there's definitely some more room to tweak the ECU in this car, I just didn't do it since I didn't want to mess with it too much.
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