Basically, your ecu cuts the fuel to 0 (InjOn) whenever you take your foot off the gas (IdleSw=1) and your rpm is greater than your target idle + FCoffset. (There is actually a delay of about 0.7 seconds to do this cut).
Then as your rpm drops...
I think if you don't already have an account at AliExpress and you go to the web page for the Chenho sensor in the next ~8 hours they will give you a price of $1.32 and free shipping 🤣 🤣
That's what I just did. They showed it as a new customer...
So much for a thread about 1g knock sensors. If someone starts a new thread or revives an old one about 2g knock sensors I’ll share how to get an oem evo8 Mitsubishi one.Try to stay on topic, for people who may search in the future.I’m going...
I'm thinking the IAT input might not work at all for this, because maybe the knock sensor voltage is ac rather than dc. So then an ac voltmeter might be more like what you'd need (Vac on a multimeter). I can try to check this out sometime in...
If you end up trying one of the non-OEM knock sensors that came up in this thread, or even trying to verify your old one for good or bad, we might be able to evaluate how close it is to a known good OEM sensor by comparing its behavior to logs...
Within +-5% on STFT and LTFT and it should idle great at stoch, 14.7 AFRs.
Also, on 91 octane, you will be lucky to get more than 5-7* of timing before knock comes in. How much boost/compression ratio will also determine if it wants to start...
Well that part of the log, from 173 sec to the end, looks good to me. I can even see there that when rpm starts to drop a little, that is when timing jumps up to a high advance. Which would help pick up the rpm. So it's like it says in the...
Have you tried adjusting your global dead time to dial in the warm closed loop fuel trims for idle closer to +/- 2% This should have little to no effect on the WOT tune. Then you can use the Combined FT ve table adjust to set the SD table. In...
UPDATE:Recap: We had retarded the intake cam, from 6 degrees advance, closer toward "normal", and set it to 3 degrees advance.I had to increase VE several % to get airflow back to 0.25g/s. The vacuum at idle with this new cam timing was...
I've got a set of Web's I'd love to try - but the last time I tried with stock timing gears, it idled like a big block motor boat, loaping along. had to pull them out. Now with timing gears I could go and try again.I wonder - is there a lobe on...
Honestly if youre not sure whats going on with the cams you are going to be fighting this forever. Guessing will only keep adding to your frustration.If it were me Id redo all timing and make sure my cams were degreed properly.Cant fix...
I appreciate the clarification. We have taken steps to minimize the hunting by keeping the differences in that area smaller.This car doesn't seem to like the timing so low at idle, so I'm thinking we might have to try moving it a little higher...
I had increased the timing on the top left corner of the table to mostly 12s, ie. in between Evo8 and 2G base settings.Next time I work on this, I do believe I will try increasing the base timing around the idle area a few degrees more i.e...
This is a very useful explanation. I just changed mine to 470. It does seem to be helping. Log attached.Unfortunately, I didn't read your entire post before I started logging today, so I didn't capture the ISC position before startup. However...