dcb recently sent me a "care package" with a couple of components my small town rat shack didn't have. To my surprise there was also an "evaluation" MPGuino in the box!
I hooked up to the car (1998 Pontiac Firefly 1.0L TBI 5-speed) this weekend.
Random observations:
1) COOL!!!
2) finding the
injector &
VSS wires was easy, mostly because dcb has the same car as mine and has blazed that path already (with pictures!):
MPGuino release one workspace
3) with those settings, the
MPGuino was showing
half the MPH that the speedometer/ScanGauge showed, so I halved the
VSS Pulses/Mile value in the
MPGuino setup (to 8204), and that seemed to fix it.
4) I still need to factor in an additional offset for
VSS Pulses/Mile, because the transaxle I swapped into my car (with a taller final drive ratio) was originally calibrated with a smaller tire size (diameter) than my tires.
5) The car's MPH display is jumpy, as
dcb already noted with his Metro, though he also found that
despite this, the total distance traveled seems accurate.
I was thinking I could calibrate my car's VSS pulses/mile setting by jacking up the drive wheels and idling the car in 5th gear to rack up some mileage without having to drive around unnecessarily. It seems to idle @ about 30 mph.
Any technical reason I
shouldn't do this? (Aside from the fact it'll pad my tank MPG with some awesome numbers - seems to get about 150 mpg idling in 5th on jack stands.
)
I probably won't have a chance to calibrate the
MicroSec/Gallon until I get back from the
tall ship race though, because I'll have to do some actual driving to tweak it.