Help calibrate dsmlink log

[JDR7919]

Please help me with my 3bar and boost est.
It is close but still off

Thanks

 

[twdorris]

Please help me with my 3bar and boost est.
It is close but still off

Yeah, it doesn't look too bad. I'd leave 3bar and BoostEst alone at this point. They're close enough to suggest your airflow metering is pretty good.

I would focus on the estimated A/F ratio vs. wideband. If we can believe the wideband numbers, you're running a good bit leaner than you should. Given that you have decent airflow numbers already, the only thing left that can be off is fuel flow.

Again, assuming we can trust the DynoJetWB data (I'm not so sure), you would need to enter -49% into global fuel instead of your current -56%. That's a big change and will, of course, throw off the fuel trims you have established at idle and cruise.

But you have plenty of room for adjustment on the trims. I suspect some of your airflow adjustments are actually compensating for fuel flow issues now. So some readjustment to the airflow compensation at idle and cruise will probably bring everything right back into line.

To help with the airflow compensation, I would recommend that you download and use the new V3 application off our website. It will connect to your V2 ECU just fine once you set the device type in the "configure connection" dialog. With the V3 application, you can use the MAF adjustment tool to automatically do the airflow compensation I mentioned above at idle and cruise once you've made the -49% change to the global fuel value.

Application download page
Semi-automated MAF Adjustment procedure

Hope that helps,

Thomas Dorris
ECMTuning, Inc.

 

[JDR7919]

Yeah, it doesn't look too bad. I'd leave 3bar and BoostEst alone at this point. They're close enough to suggest your airflow metering is pretty good.

I would focus on the estimated A/F ratio vs. wideband. If we can believe the wideband numbers, you're running a good bit leaner than you should. Given that you have decent airflow numbers already, the only thing left that can be off is fuel flow.

Again, assuming we can trust the DynoJetWB data (I'm not so sure), you would need to enter -49% into global fuel instead of your current -56%. That's a big change and will, of course, throw off the fuel trims you have established at idle and cruise.

But you have plenty of room for adjustment on the trims. I suspect some of your airflow adjustments are actually compensating for fuel flow issues now. So some readjustment to the airflow compensation at idle and cruise will probably bring everything right back into line.

To help with the airflow compensation, I would recommend that you download and use the new V3 application off our website. It will connect to your V2 ECU just fine once you set the device type in the "configure connection" dialog. With the V3 application, you can use the MAF adjustment tool to automatically do the airflow compensation I mentioned above at idle and cruise once you've made the -49% change to the global fuel value.

Application download page
Semi-automated MAF Adjustment procedure

Hope that helps,

Thomas Dorris
ECMTuning, Inc.

Thanks for the help Tom!!!

I did not realize I could use the maf adjustment in v3 I will do that for sure.
The dyno jet wb was not supposed to be there. I was trying to find one of the wb that would match my aem best and forgot to remove the dyno jet. My A/R is 10.9-11.1 at wot