[R1000K3]

They are the two bottom graphs, which are not correctly labelled in the diagram. They are 11.7 and 11.8 at the marker.

[Jeff@TopGearSolutions]

11.8 is pretty conservative on a DI car.

I mean, I tuned my last car to 11.7-11.8 10 PSI and Nitrous (and it wasnt DI). So.... this is good news eitherway.

Thanks r1000K for looking into the aftermarket wideband as well.

[OpenFlash]

Originally Posted by Former_Boosted_IS

Has anyone logged this side-by-side an aftermarket wideband yet?

I have. Just as accurate but with the benefit of having one sensor per bank. The factory widebands should also be a whole lot more durable than aftermarket voltage based units.

Shiv

[OpenFlash]

Originally Posted by Former_Boosted_IS

On the procede AFR or the aftermarket wideband? The video I saw showed a sample rate of like 7 hz and was considerably different than what the procede was showing. Remember the tune is cooking the heck of the wideband, so it must apply some type of correction to give you an output. Unless you test this against an aftermarket wideband, you have no clue what you are looking at.

This is why integration of an aftermarket wideband is king.

The DME applies a heater signal to the wideband and monitors the amount of current necessary to maintain the given sensor temp. This is used to apply a temp based correction to ensure that the reading is always accurate. Fundamentally no different than a conventional voltage-based Bosche wideband. But the stock widebands seem to heat up a whole lot faster which is expected given emissions concerns. I can't, for the life of me, see any reason I would trust an aftermarket wideband unit more than the factory sensors. Especially since their feedback is integrated into built-in safety nets.



Shiv

[Mr. 5]

Originally Posted by R1000K3

They are the two bottom graphs, which are not correctly labelled in the diagram. They are 11.7 and 11.8 at the marker.

Is this the minimum, maximum, or average?

[R1000K3]

It is the AFR at 4951 rpm at the specific load. The AFR will change beteween high 10s to more than 15 to 1 depending on the conditions. High rpm and and high boost gives low AFR values, as it should.

[piele_bps]

Originally Posted by R1000K3

The AFR logging works very well. Great feature

I see a bog shift in this log, right ?

[Former_Boosted_IS]

Originally Posted by shiv@vishnu

The DME applies a heater signal to the wideband and monitors the amount of current necessary to maintain the given sensor temp. This is used to apply a temp based correction to ensure that the reading is always accurate. Fundamentally no different than a conventional voltage-based Bosche wideband. But the stock widebands seem to heat up a whole lot faster which is expected given emissions concerns. I can't, for the life of me, see any reason I would trust an aftermarket wideband unit more than the factory sensors. Especially since their feedback is integrated into built-in safety nets.



Shiv

Shiv, thanks for the response! I am more curious as to how you are coming up with the final AFR figure since you are cooking the AFR readings with the Procede. I would assume this means the CANBUS information should be the cooked signal you are sending the DME. Are you intercepting the factory widebands with your harness then monitoring the voltage from your harness or is this coming from CANBUS data with a correction factor applied?