Temp related knock

[Td-d]

P.S. I'm tired and cranky

[Kodename47]

Originally Posted by Td-d

Guys - I know Ecutek is awesome and all, but this scaling has been on the IAT activation tables used on Subarus for time immemorial. Maybe I'm just used to reading it, but -100% makes sense to me - 100% of the compensation is removed, in other words no compensation is applied. 0 means none of the compensation is removed.

Tomato / tomato.

They both make sense if you know how to read them Even if the scaling isn't changed, at least some might now realise. I didn't look into the RR definition to see whether it was made clear.

[steve99]

Yes had it round the wrong way corrected my stuffups thanks guys.

[steve99]

Interesting their is no timing compensation applied for Engine Coolant temperature.

Might be a good failsafe to pull a bunch of timing if the coolant gets too hot at least you would feel the car loose power and know something was up.

[solidONE]

Hey @steve99 I'm curious if you've done any changes to the tip in retard and tip in enrichment tables. From the looks of my 3rd-4th-5th logs it really look like the amount of knock correction applied by the computer is effected by both temperatures AND tip in knock.

The tune that I'm on in these logs on the first post already has a bit of tip in retard and enrichment added. I'm thinking maybe the tip in retard needs to be increased in relation to the IAT as well.

[steve99]

Originally Posted by solidONE

Hey @steve99 I'm curious if you've done any changes to the tip in retard and tip in enrichment tables. From the looks of my 3rd-4th-5th logs it really look like the amount of knock correction applied by the computer is effected by both temperatures AND tip in knock.

The tune that I'm on in these logs on the first post already has a bit of tip in retard and enrichment added. I'm thinking maybe the tip in retard needs to be increased in relation to the IAT as well.

Have not adjusted tip in retard or enrichment. by running our 100Ron fuel and a couple of tweeks to temp and Knock correction timing I have almost zero knock now. Just waiting for the hot weather to return to check at high temps.

[R2]

Has someone been able to confirm that you can put positive numbers in the IAT compensation table and have a resulting advance in timing? I'm hoping there is no absolute value computation in the formula which would result in less timing regardless of sign.

With cooler temperatures arriving now that it is fall, I am playing around with increases in base timing. I'm hoping to see a knock free increase in timing develop below 10C. I can see this is likely a tough balance given MAF loads increase with cooler denser air as well.

[solidONE]

Originally Posted by R2

Has someone been able to confirm that you can put positive numbers in the IAT compensation table and have a resulting advance in timing? I'm hoping there is no absolute value computation in the formula which would result in less timing regardless of sign.

With cooler temperatures arriving now that it is fall, I am playing around with increases in base timing. I'm hoping to see a knock free increase in timing develop below 10C. I can see this is likely a tough balance given MAF loads increase with cooler denser air as well.

Haven 't had a chance to test if it will add advance yet. It's still hot like the devil's butt crack around these parts.

[R2]

Originally Posted by solidONE

Haven 't had a chance to test if it will add advance yet. It's still hot like the devil's butt crack around these parts.

I wish, take a look at my forecast, it's colder than a nun's **** here this week. http://weather.gc.ca/city/pages/sk-32_metric_e.html

Looks like I'll have that answer soon.

[steve99]

Originally Posted by R2

Has someone been able to confirm that you can put positive numbers in the IAT compensation table and have a resulting advance in timing? I'm hoping there is no absolute value computation in the formula which would result in less timing regardless of sign.

With cooler temperatures arriving now that it is fall, I am playing around with increases in base timing. I'm hoping to see a knock free increase in timing develop below 10C. I can see this is likely a tough balance given MAF loads increase with cooler denser air as well.

I accidently put a positive value in the table iat vs temp and it did not upset anything, unfortunatly it was winter and iat did not get to the trigger temp so i carnt tell you if it worked but it certianlty did not cause any problem.

[Td-d]

Originally Posted by steve99

Interesting their is no timing compensation applied for Engine Coolant temperature.

Might be a good failsafe to pull a bunch of timing if the coolant gets too hot at least you would feel the car loose power and know something was up.

It is odd, all the other roms start pulling timing heavily beyond 230F.

[steve99]

Originally Posted by Td-d

It is odd, all the other roms start pulling timing heavily beyond 230F.

thanks
might check out a wrx rom and see what they do seems like a worthwhile addition.

[Td-d]

Originally Posted by R2

Has someone been able to confirm that you can put positive numbers in the IAT compensation table and have a resulting advance in timing? I'm hoping there is no absolute value computation in the formula which would result in less timing regardless of sign.

With cooler temperatures arriving now that it is fall, I am playing around with increases in base timing. I'm hoping to see a knock free increase in timing develop below 10C. I can see this is likely a tough balance given MAF loads increase with cooler denser air as well.

The figures are not constrained, no - so positive values should work as well.

[Td-d]

Originally Posted by steve99

thanks
might check out a wrx rom and see what they do seems like a worthwhile addition.

Most of the roms I've seen pull 2.11 degrees in the top cell.