Hi,

First off, I'm very new at this and have not touched my ECU. It has been re-flashed by a local tuner. I just had an AEM UEGO installed and decided to log a run. My question is with the knock and the wideband reading. Does it look right? The o2 seems to go up and down a little bit. How can I tell if that is truly knocking or just that "phantom" knock I have read about. Thanks in advance for your help!

-Jason

 

who ever tuned that car doesnt know wtf they're doing. The timing curve is god awful, there is consistant knock across the board and your fuel injectors are being pushed way past their limit

 

btw the car is also PIG rich

 

how much boost are you running? Above 22? If I had to guess....after thinking about it.....your boost is cranked way up....looking at your mod list there should be no way you have those injectors maxed out like that....

You're seeing 95% duty cycle (that's just by looking, I'm not sure)

 

Im suprised your tuner didnt ask for some logs after the reflash, that standard practice for the tuners so they can tweak the maps for the best results.

 

Yea I am boosting 22.3 psi. Could there be something wrong with my injectors or fuel pump to be causing that duty cycle?

 

it looks like the onset of knock when you first went WOT ruined the whole run. The car is really down on timing due to this yet it still knocking steadily. If the WB02 is right it's plenty rich so I'd guess it's running too much boost. The rich tune and high boost would explain the high IDC's too.

 

Honestly, turn the boost down and probably put the stock map back on the car. It doesnt look like that tune is doing you any favors. That is really significant knock and the timing is really excessive, combine that with a bad fuel map to boot. Does not look like phantom knock.

Suggestion, turn the boost down to 18-19psi, load the stock map and see if the knock goes away.

 

For 22.3 psi of boost that timing is about right on 92/93 (unless its junk fuel). The fact that its 1.5 full points too rich could be part of the knock issues. Incongruent flame fronts because of the amount of vapor in the cylinder, in otherwords uncontrolled burn.

Your mod list says drop in filter but your fuel trims seem off quite alot to me. I need to go back and review some of my logs (I dont remember off the top of my head), but if they are even it should be 100 I believe more or less across the board.

Do you have the data file (.csv) for this log? The way you have it posted makes it kind of a strain to compare data.

 

1.5 points too rich? I don't follow. Maybe at the 3000-3500 rpm area it's 1.5 too rich? From experience and lots of reading, having AFR between 10 and 11 is a safe area.

I think it is too much boost for whatever octane you're on.

 

I think when "Bubba" tooned your car he set the timing too high and it continued from there. Assuming that every 3 counts pull 1*, and your getting 6 @3200 and your timing is 5, then 5+2 then your timing map is set @ 7. That is simply too much.

At 3700 rpm your KS is 8-9. Working with the same assumption, then your timing map is 5+3=8* Again, way too much @ peak boost torque.

Please look at your high octane igintion map and tell us what the timing is set at between load 200-240 for every rpm row.

 

Naj, I brainfarted. I was looking at the timing post drop and for some reason thought thats what his actual mapped timing was (i.e. 4-5*)

Yeah I retract my previous comment about the timing, its too high.

1.5 AFR as in --

10:1 flat is not right

11.5:1 is alot better

Roger you are free to argue the point, but somewhere between 10 and 11 isnt correct. Somewhere between 10.9 and 11.4 is "safe" for most cars on normal octane fuel. Race gas is leaner yet and usually in the high 11's to 12.0 or so.

 

John is right. Evos are usually tuned to run @ 11-11.5:1 on 93 octane gas. If he was running on 91, then 11-10.5:1 is the range.

 

Sorry, forgot to mention that. I only use 93 octane. I try to hit the same Sunoco by the house every time. I do have the CSVs, just didnt know how to attach it here.

Thanks for all of the help!!!!

 

Awesome, I learned something new!