Timing Question

Anyone have a clue if 27 degrees of advance at the top of 4th is doing good? Wish I knew what the table maxes out at.

 

Add knock feedback and knock correction learning value to find out if it is good or not

 

Unfortunately I don’t have that option in the program I am using. I’m using a Bluetooth 4.0 module. Looks like it’s not supported and it has no parameter like this.

 

Download fusion obd app(free), buy inside the app toyota pids for your year($16). Your adapter may work, if not Amazon has adapters for different OS for 15-20

 

Awesome, let me give that a try.

 

FYI, if there are not pids for 2023, buy 2022 and set up fusion app for 2022 year

 

Base ignition timig for your rpm and probably 100% load is 30-31. Then you need to add high and low knock for port and direct and other corrections. 27 is probably on the high end, but you need to add a whole alot of pids to see the whole picture

 

You rock, thank you. I should have not purchased the other application. I’m running e17 or so and I’m interested in seeing how she reacts vs straight 93. Oh well, it was only $7. This is 100% better.

 

How do you usually look at AFR, AFR actual? And mind if I ask what your AFR is like under WOT? I did another log and timing was pegged at 30 degrees advance but AFR actual was on the lean side. I also switched one of my monitors to knock f/b value instead of learned.

 

Search for pids a/f (o2) lambda sensor b1s1, etc

 

Excuse my ignorance, but what are pids? The abbreviation to me means process ids in a Unix like operating system.

 

Close. Engine Parameter ID

 

So A/f actual is not accurate?

 

Parameter identification. Manufacturers have their own ID’s and often you need these specific ones so you can see the data.

 

This is not toyota pid. It is SAE one.
Try to pick pids from Toyota/Lexus/Scion list.
Remember, you have 2 banks

 

You’re right. May have been giving me bad info too. Maybe I was not as lean as I thought.

 

I ended up selecting 2021 for it to find Toyota. Odd that they have not updated it as it’s obviously no change.

 

iI look through some old logs and found rmp spike close to yours in post #1. 87 octane ( 20 degree cooler intake temps)

 

Nice, that’s like 11:97:1. A little rich but not bad. I found my timing to be consistent and climbing until shift on the first log. I need to log some more but I want to get back to at least an almost full tank of 93 vs e20. Even though the fuel pump can handle it open loop can’t. I have a feeling this much E is causing her to be too lean. With timing pegged at 30 degrees advance, AFR went from 11:9, to 14:9, to 15:1, then 17:3 at the top of 1st and 2nd. At least according to the SAE PID. Way too lean for my liking but she definitely likes the octane. Gong to run this tank down and re-log with less than 15% ethanol.

 

Are you tuned? If you're wondering about a lean condition just look at the long term fuel trim. That's what it's there for