Very good read, I like learning a bit more of the actual programming on the ECU and other engine related computers (programmer by hobby, IT Tech by career).
Anyway, on the offical site for scangauge I either can't get the values to work in X-Gauge, or the sensors are not listed.
BLM/LTFT - Has bank 5-8, but is called LF1 - LF4, I tried bank 5 and it never populates
KR - I see no where to monitor this on their page or default gauges
EGR duty cycle - Same as KR, with 230k miles, the EGR is probably partly blocked off.
Quote:
If for some reason your EGR wasn't functioning, or was clogged, then you may be getting knock retard under certain driving conditions when the EGR becomes active.
Knock retard can also be caused by any number of mechanical rattles on the car, which can occur under certain driving conditions.
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If the EGR is messing it, it could actually increase FE? I always thought it was the opposite, big time if I'm getting spark knock.
As for engine rattles, there are some and different RPMs. At low speed just starting off really easy, the engine sounds almost like a bad wheel bearing (last owner said it needed one, all are good).
At some point in time, I plan to hit the car with seafoam to clear out the carbon, and check the EGR ports, idle control valve, etc. I would just hate to loose FE by "fixing" the engine lol.
Back to more info on this "mode", even in warmer weather (60s-70s now) it is almost exactly the same setup except the car can move easier though the wind I guess. Instead of fighting about 6.6-6.8 MAP values to stay in the mode (under 7), I was going 45mph with as low as 5.8-6.2 most of the flat land travel. Instant mpg was reading between 60-65mpg, a few spikes to 70mpg but I was probably slowing down ever so slightly. At first I kepted hitting 50mph with my normal MAP readings, I was going WTF for a few miles lol. Trip average hit a new high as well, 49.9 and about 6 miles shorter (stopped at gas station), so it could have been at least 50.2 by the time I got home.This is from the same tank of gas I hit my last 2 high figures, 45.3 and 47 and my last aero mods. Can't wait for summer gas (if it isn't here yet).
With out this "mode" I rarely hit over 40mpg average on a trip.