ECMlink Is this a bad tune?

[DeadlyScone]

I have no idea. Do you have a log?

um, do you need one when it back fires or just an log since the re-tune?

EDIT: i looked through the forums about backfiring, seems most of the problems were cam timing being off, bad coil packs, too much air and not enough fuel, and ignition timing.

 

[Calan]

One with the new tables... whatever you have.

 

[DeadlyScone]

One with the new tables... whatever you have.

okay here was a log i did the night i put it in.

 

[Calan]

I have no idea what it could be. You've changed global fuel, zero'd the MAFComp sliders, turned off MAFClamp, added 5% fuel @ 2k rpm with a slider change, changed timing sliders, etc.

How (why) are you changing all of this with no way to monitor AFRs? There's no telling what it's causing, but I'm guessing it's running pig rich down low right now.

If you are going to change all of this, you need to do a full calibration on your MAFComp using the fuel trims, and stay out of WOT until you can log your AFRs.

 

[DeadlyScone]

I have no idea what it could be. You've change global fuel, zero'd the MAFComp sliders, turned off MAFClamp, added 5% fuel @ 2k rpm with a slider change, changed timing sliders, etc.

How (why) are you changing all of this with no way to monitor AFRs? There's no telling what it's causing.

all the stuff you see in the ecu config is how it was when i got the car(minus the timing being zero'd and MAF clamp being disabled) other than that that's how it was.

EDIT: the MAF comp was what I tuned through the logs.

 

[Calan]

all the stuff you see in the ecu config is how it was when i got the car(minus the timing being zero'd and MAF clamp being disabled) other than that that's how it was.

EDIT: the MAF comp was what I tuned through the logs.

Referring to this:

Don't mess with the global fuel or MAFComp until you can see actual results; it may make things worse if you are just shooting blind. Just get the EVO 8 maps loaded to drop the timing targets to something reasonable, and watch for knock.

and should i disable MAF clamp also?

... unchecking it may change your airflow up top, so I wouldn't mess with it until you can monitor your AFR and see what effect it has.

... all of the changes I mentioned have happened between the first log you posted and this one...I simply compared the two.

 

[DeadlyScone]

All of the changes I mentioned have happened between the first log you posted and this one...I simply compared the two.

so then maybe i should enable MAF clamp and revert the original timing slider settings and see what it does? or will that not make a big difference?

 

[snowborder714]

With how confused you seem, it seems like you should just start over. Revert everything back to stock settings. Then only change the fuel global % and deadtime values in the Fuel tab, as well as using the Evo timing table Craig suggested. If you want to also use the fuel table, that's fine.

Then take another log once all that is done. The car should run fine and hopefully have no knock because of the timing table change. Then look into picking up a wideband as your next mod so you can accurately adjust MAF Comp sliders and the fuel table.

 

[DeadlyScone]

With how confused you seem, it seems like you should just start over. Revert everything back to stock settings. Then only change the fuel global % and deadtime values in the Fuel tab, as well as using the Evo timing table Craig suggested. If you want to also use the fuel table, that's fine.

Then take another log once all that is done. The car should run fine and hopefully have no knock because of the timing table change. Then look into picking up a wideband as your next mod so you can accurately adjust MAF Comp sliders and the fuel table.

okay, i will give that a shot and post a log.

EDIT: re did everything and put the evo timing tables in and reverted the sliders back to zero(stock) here are 2 logs IDLE and 1st-5th Cruise

it seems to me that the timing is still high or maybe that's just me. Also the a/f estimate is allot higher at idle even though i know this is not actually what it is but still. I need a wideband Wife doesn't think i need it

Also i have read around and seen that an IAT makes adjustments to your timing, mabe this is why my timing is all whacked out(no IAT sensor)Do you think i need a MAP also? or is it not that important?
Sorry for my newbish-ness, I just want to learn is all .

 

[Calan]

I need a wideband Wife doesn't think i need it

Your wife is wrong. How many DSMs has she tuned?

Also i have read around and seen that an IAT makes adjustments to your timing, mabe this is why my timing is all whacked out(no IAT sensor)

Where did you read that?

 

[snowborder714]

Watch video #8 and make sure to follow the steps. This will help get your AirflowPerRev (looks pretty good already) and CombinedFT in check.
ECMTuning, Inc.

 

[DeadlyScone]

Your wife is wrong. How many DSMs has she tuned?

like close to zero or something like that.

Where did you read that?

uhh, can't recall, i think grassvalleysports forums or something like that. So DSM's don't use the IAT for anything?

Watch video #8 and make sure to follow the steps. This will help get your AirflowPerRev (looks pretty good already) and CombinedFT in check.
ECMTuning, Inc.

She is at -20 to -29 now -.- but at least AirflowPerRev is good at 0.24/0.25

I have watched those videos, very helpful. I wish that they would do more.

EDIT: wait, i thought CombinedFT is supposed to be 0.00% ???