Thought I'd share some geeky interest with you guys. I got
one of these Christmas:
Ugly as hell with a stupid case that fits NOWHERE. But it does some interesting stuff. This thing is plug n play to your OBD2 port, reads/clears codes, reads parameters, and is a trip meter.
MPG: Pretty cool. This thing tells you the current mpg you are getting this second, keeps an average mpg for the trip, average for the day, ave for yesterday, and max mpg. Helps you figure out where you are eating up mpg.
- Spirited on ramp acceleration hardly does anything if you're actually doing freeway driving. Same with downshifting to pass. MPG goes down for that acceleration (to lik 12 mpg) but it's such a short duration it's not that significant. The constant freeway speeds rack up the good mpg. In fact, freeway cruising alone racks up like 36 to 48 mpg depending upon your speed
- The speedo and tach are WAAAAYYY off compared to what the ECU sees. It gets worse the faster you go. Examples:
ecu : gauge (speedo)
20 --- 20
40 --- 43
60 --- 65
80 --- 87
- The D16Y8 seems to pretty much be mostly utilized almost all the time according to the "load" parameter. At idle, it's 30%. During both normal and hard acceleration, load is always 80% or more, and only during freeway cruising is it around 65% (at 65mph). Obviously this is a fuel economy engine and why there isn't much power even when you step on it.
- Warmed up water temp is 195 deg F. If your temp gauge in the cluster reads anything above the cold mark, the water temp is pretty much at 140 deg or above.
- no oil temp reading. This sucks. (Anyone know the OBD2 command for Hondas to read this parameter if possible?)
- Air intake temp shows my AEM CAI seems to be doing it's job nicely. Air temp never exceeds 10-20 deg F compared to outside air at dead stop, and is pretty much outside temp when car is in motion.
- MAP sensor says at WOT I'm always 0.5-1 psi below complete vaccuum which I guess says that's my intake parasitic loss?
- Ignition advances as throttle goes up. But I don't know what the reference point is. Where is this measured?
Anybody else geekout and get a ScanGauge?
