So, my question is really, how long is the cycle.
Let's say it's late July in Tennessee, almost 100° outside. I'm driving my Tacoma down a highway at 55 mph in high gear. The road grade starts to go uphill and I tip into the throttle a little bit, just to maintain my speed, but not enough for the automatic to downshift. I hear some light pinging, which is pretty normal. I've spiked cylinder pressures by cracking the throttle open even more at a not-very-high RPM.
SO, let's say I had been burning 93-octane fuel, but, on my last stop, I filled up with 87-octane pee water. Presumably, the knock sensors would detect any knock (how sensitive they are, I'd also like to know - will the sensors pick up pinging, or, would it have to be an actual knock event?) and pull the timing back a little bit.
OK, let's say, 300 miles down the road, I fill up with 93 again. How long does it take my ECU to re-advance my ignition timing and give me back my few extra HP & LB/FT? If I floor it and redline my engine through the first 3 gears as I'm merging back onto the highway, does the ECU then detect the fact that there was no knock, and advance timing again? Or, is there a timeframe that it has to get through with no knock, in order for the timing to be re-advanced?
Let's say it's late July in Tennessee, almost 100° outside. I'm driving my Tacoma down a highway at 55 mph in high gear. The road grade starts to go uphill and I tip into the throttle a little bit, just to maintain my speed, but not enough for the automatic to downshift. I hear some light pinging, which is pretty normal. I've spiked cylinder pressures by cracking the throttle open even more at a not-very-high RPM.
SO, let's say I had been burning 93-octane fuel, but, on my last stop, I filled up with 87-octane pee water. Presumably, the knock sensors would detect any knock (how sensitive they are, I'd also like to know - will the sensors pick up pinging, or, would it have to be an actual knock event?) and pull the timing back a little bit.
OK, let's say, 300 miles down the road, I fill up with 93 again. How long does it take my ECU to re-advance my ignition timing and give me back my few extra HP & LB/FT? If I floor it and redline my engine through the first 3 gears as I'm merging back onto the highway, does the ECU then detect the fact that there was no knock, and advance timing again? Or, is there a timeframe that it has to get through with no knock, in order for the timing to be re-advanced?