JorgeYaHeard

iTrader: (11)

Are the timing values seen in EcuFlash actual timing values, or are they generic(like AFR values in High Octane fuel map)

I'm getting 0 counts of knock, and logged timing is not correlating with the timing value in the high octane timing map.

I've searched, and all I found was that load could be off, but it would have to be off by about 6 cells and that doesn't seem right.

Current mods, 3inch TBE, k&n cone filter, 2.5inch licp, ETS 3 inch front mount.

killerpenguin21

iTrader: (20)

how much of a difference are you seeing?

the ecu interpolates so if you hit a cell set to 8 and there is say a 6 next to it you may only get 7 degrees.

if you do a map trace in evoscan you can see what the interpolated value is for a cell hit.

post a screenshot of a map trace.

Raptord

iTrader: (10)

It could be IAT timing trim as well that is causing it, if it's a 1-2 degree variance.

Mellon Racing

iTrader: (38)

^^ that's most commonly the reason you don't get what you commanded in the timing map

killerpenguin21

iTrader: (20)

i keep seeing this happening to people lately. but how come it doesnt happen to everyone?

i never even ran across the tables.

4g94T

iTrader: (18)

I zeroed out the ignition vs air temp table.
Timing is dead-on.

JorgeYaHeard

iTrader: (11)

I figured it would change a little bit between columns, because of the interpolation. I think it's probably a combination between interpolation and Ignition trim vs. Air temp.

I zeroed out the Ignition vs Air temp, I'll have to go out and see if that helps.

fryedchikin

Something to keep in mind is that Evoscan's map tracer will often be off by a cell due to the way it looks at Load.

JorgeYaHeard

iTrader: (11)

Well just went out after zeroing the Ignition trim vs air temp and here are the results.

Only change was the Ignition Vs Air temp. 92*F 52% humidity



Blue graph is today after the ign vs air change. Also, timing is almost dead on with the commanded values, only thing effecting it is interpolation at this point, still zero knock counts!

killerpenguin21

iTrader: (20)

looks good.

looks like your in the same boat as me, car is disgustingly rich so you can keep throwing timing at it lol.

JorgeYaHeard

iTrader: (11)

Indeed, very rich! I'm going to throw another degree of timing at it and see what happens. I'll be interested to see what happens once I get timing set and start leaning it out. It looks like I'll be taking close to a whole point of fuel out in the top of my rpm spectrum. It's seeing 11.0-10.9 at 4750rpm continuing to get to 10.1-10.2 at 7000-7500rpm.

Raptord

iTrader: (10)

Yea that's very rich, start by leaning it out before adding timing. Mid to low 11's is the range you should be looking at.

JorgeYaHeard

iTrader: (11)

Well here are the current results, leaned the car out a bit. The car seems to be more consistent now, and I think it's time to throw a couple more lbs of boost at it!

evodomUA

Do you mean

Ignition Trim vs Air Temp Above Load?
RPM - 500 1000 1500 2000 2500 3000 3500 4000 4500 5000
% - 70.625 70.625 70.625 70.625 80 80 100 100 100 100

Do you zeroed %?

Thank you for replly.
It looks like I have the same issue

vd

iTrader: (3)

My guess is he zeroed values in the following table:

<table name="IAT-Compensated Ignition Trim" category="Timing" address="3c8e" type="2D" level="1" scaling="TimingTrim8">
<table name="MAF Air Temp" address="714a" type="Y Axis" elements="8" scaling="Temp"/>
</table>

See the thread for additional details - https://www.evolutionm.net/forums/ec...ing-trims.html