Idle hunting?

[Speedforhire]

Say NO to the Prius!

Ok! A new Chevy VOLT then. Good choice!

[Speedforhire]

your idle hunts due to adaptive idle getting overworked.

your airflow table

flatten your 1000rpm and below and increase say 5% at 200rpm and interpolate to your target.

you have 20 degrees in your idle timing tables, you should be close to that now your hoovering around the 10-12 advance

you need to decrease idle airflow as mentioned.

What about the new one I just posted? Would you care to do a full tune? It's obvious I don't know what I'm doing. :-/

[schpenxel]

There's not really enough data there to tell much honestly. It takes a good 30 minutes IMO for things to settle down after you flash it

Also, add throttle position to what you're logging

edit: yeah I just noticed this was just an idle'ish log, so that makes more sense

[schpenxel]

Also, was the post from SultanHassanMasTuning about this last tune/log or something else? Becuase on the last one when you're idling it's in the 16-20* range on timing, which doesn't match what he was saying

[Speedforhire]

Also, was the post from SultanHassanMasTuning about this last tune/log or something else? Becuase on the last one when you're idling it's in the 16-20* range on timing, which doesn't match what he was saying

Just asking for his opinion also............

I wasn't able to take the car out for a lengthy drive, however, I didn't know it would require that lengthy of a drive.

Like I said. I don't know what I'm doing. My wife keeps telling me to get rid of the car. That may be a better solution. Perhaps a new Z/28? It already has the track prowess I seek. They just cost too much.

Hell, I don't know what to do. I need another beer.

[Speedforhire]

Anyone look over my latest? Should I go ahead and get rid of the car? Drive it into the river? We don't have steep cliffs here for me to indulge myself. :-/

[schpenxel]

Anyone look over my latest? Should I go ahead and get rid of the car? Drive it into the river? We don't have steep cliffs here for me to indulge myself. :-/

lol, don't get rid of the thing. There ARE people who can fix it remotely for not a lot of money. I hate recommending people, because I always feel like it's on me if they suck, but I know there are people who can fix this for a reasonable price.

Def. not worth getting rid of the car over IMO

[Speedforhire]

No_FT's_+4K.JPG

No_FT's_+4K#2.JPG

[schpenxel]

No_FT's_+4K.JPG

No_FT's_+4K#2.JPG

I guess it goes?

[Speedforhire]

Two new logs from a cruise into work and back home. :-(

[schpenxel]

Two new logs from a cruise into work and back home. :-(

Just looked at cruise3 and I'm wondering why it isn't going into PE? Do you have the tune that you were using or is it one you've already posted?

There's at least one spot at > 50% throttle, 3K RPM's and >90kpa.. I would have thought those conditions would have been enough

What problems are you having now?

[schpenxel]

I just noticed that your commanded EQ ratio is going the wrong way in the one spot I found that looks like it finally went into PE.. that is backwards. I'm confused.

Can you post the most recent tune? Or email it to me if you haven't already?

[Higgs Boson]

I haven't looked at the scan but EQ Ratio is inverse of Lambda in the tune and IS lambda in the scan. It is like this in almost all the ECMs.

[schpenxel]

I haven't looked at the scan but EQ Ratio is inverse of Lambda in the tune and IS lambda in the scan. It is like this in almost all the ECMs.

Weird. E40's aren't like that on the logging side, so that had me confused.

I saw commanded EQ ratio > 1 on the log and it was backwards from what I've seen on mine. Oh well, good to know.

[Speedforhire]

Ok! I set Stoich back to stock settings and PE mode to stock. It calculates out to a final 11.52 AFR. Will that work better?

Here is the new tune now. How does it look?

I'm going to have to raise the idle somewhat. The car almost stalls out in gear.

[schpenxel]

Ok! I set Stoich back to stock settings and PE mode to stock. It calculates out to a final 11.52 AFR. Will that work better?

Here is the new tune now. How does it look?

I'm going to have to raise the idle somewhat. The car almost stalls out in gear.

I think the mistake was on my part.. your PCM reports commanded EQ ratio differently than mine does, so I thought you had set something backwards.. but it was actually just reporting backwards and I didn't know it. i.e. it's fine.

Here's what I would use on power enrich:
MAP 80 or 85 kpa
MAP hyst 5
enable 300
rpm hyst 30
PE throttle-->hot, set entire table to 5
EQ ratio (gas), I'd set the whole table to around 1.18 or 1.2 as a starting point at least
enrich ramp in, 1 is fine
PE delay, set to 1500

[schpenxel]

Try using these values in your MAF table. Should be able to copy/paste the whole group at once

Make sure your units are in g/sec

nvm, I'll email it to you.

[Speedforhire]

Try using these values in your MAF table. Should be able to copy/paste the whole group at once

Make sure your units are in g/sec

nvm, I'll email it to you.

I just compared your table and it is the same as I'm using in the "New_Tune#3" that I posted this morning.

I changed the PE settings to your recommendation.

[schpenxel]

Might have sent you the wrong thing, but I just re-sent it. Changes are small so you won't see anything over maybe 5% difference. I was just trying to get fueling a little closer since I know how to help with that part

[Speedforhire]

Might have sent you the wrong thing, but I just re-sent it. Changes are small so you won't see anything over maybe 5% difference. I was just trying to get fueling a little closer since I know how to help with that part

I have Precision set to "0.00000".............so anything outside that I didn't see. :-)