Quote:
Originally Posted by sen2two
So you are idling fine at 750 or so. But the higher you go, the more it's off...
*Also, if you changed from the stock tire height (not rim size, but full tire height) then your stock speedo is off.
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The idle "feels" fine to me. This is my first rotary so I don't know what a 450 RPM would feel like, but I imagine it would be rough. Based on my calculations the stock tachometer actually gets slightly closer to the expected engine speed the faster I go. So it's "off" 300 RPM at 30 mi/hr in 3rd, but by 70 mi/hr in 5th it only appears to be "off" by 250 RPM or so. Idle is something I cannot check because my calculations require vehicle speed, and therefore a digital tachometer would be needed. I'm beginning to lean toward the speedometer being off due to the idle condition, but I'll verify this with a GPS unit.
Regarding tire size, I know the diameter of my tire from the manufacturer website (Toyo T1-R), but I don't know the exact diameter of what stock was. I'm running a 225/50R16, which is supposedly like 0.7% larger than the stock 205/60R15 though...