Hondata

is it possible for us to use an aftermarket wideband O2 sensor with k-pr. i want to get rid of the stock one since its not entirely accurate, nor reads low enough.

The factory sensor is quite accurate from 11.5 and above... (to like 20:1 if I recall correctly).

Anything below 11.5 shows up as 11.5 or some lower number. I always lean things out in boost until the a/f curve is obviously not flatlined at 11.5 and starts to take shape. I leave my a/f curve average at 11.7.

You cannot use an aftermarket wideband with k-pro for CLOSED LOOP operation or DATALOGGING but you can obviously tune with somone elses wideband on a dyno. The factory wideband would still work fine for closed loop -- many people do this.

Razathorn wrote:The factory sensor is quite accurate from 11.5 and above... (to like 20:1 if I recall correctly).

Anything below 11.5 shows up as 11.5 or some lower number. I always lean things out in boost until the a/f curve is obviously not flatlined at 11.5 and starts to take shape. I leave my a/f curve average at 11.7.

You cannot use an aftermarket wideband with k-pro for CLOSED LOOP operation or DATALOGGING but you can obviously tune with somone elses wideband on a dyno. The factory wideband would still work fine for closed loop -- many people do this.

my point is i dont like playing the guessing game to see where the fuel is everytime i reduce/add fuel.

i never use the closed loop anyways, just want to know if the signal of the aftermarket O2 will/cant be read by the ECU....is there a denso O2 wideband, that reads lower than our stock one?

Fade2Black wrote:my point is i dont like playing the guessing game to see where the fuel is everytime i reduce/add fuel.

i never use the closed loop anyways, just want to know if the signal of the aftermarket O2 will/cant be read by the ECU....is there a denso O2 wideband, that reads lower than our stock one?

You cannot hook up an aftermarket wideband to k-pro. The oem wideband is a current based wideband as I understand it. I couldn't tell you about the denso option.

I want matt or doug to answer my question, even thought they prolly cant stand me.

Razathorn first reply is correct.

i've found the stock sensor to not be as accurate as a true wideband. i tuned a k24 w/ jrsc and while the stock one read in the dataloggs never leaner than 12.5:1 it actually was reading as high as 13.5:1 on the dyno wideband that was mounted 2 inches from the stock one. i trust the 5wire dyno sensor more than i trust the 4wire stock one.

scttydb411 wrote:i've found the stock sensor to not be as accurate as a true wideband. i tuned a k24 w/ jrsc and while the stock one read in the dataloggs never leaner than 12.5:1 it actually was reading as high as 13.5:1 on the dyno wideband that was mounted 2 inches from the stock one. i trust the 5wire dyno sensor more than i trust the 4wire stock one.

There have been quite a few tests of the factory honda sensor, showing it to be quite accurate. My guess is that the dyno wideband sensor has been exposed to a lot of race gas or oil and is reading leaner due to that. When was the last time it was checked against another wideband?

As you know a lot of us have a wideband interface. Is there a chance that hondata just integrates an ADC so we can also datalog these at the same time. Probably a lot of other people would be interested.
What do you think?

Progger wrote:As you know a lot of us have a wideband interface. Is there a chance that hondata just integrates an ADC so we can also datalog these at the same time. Probably a lot of other people would be interested.
What do you think?

In the past, hondata has inquired if people would be willing to pay for such a feature. I don't think they're going to make it a standard part of k-pro. I imagine that's because for the vast majority of folks, the factory wideband works fine, so why increase the cost of k-pro for a few folks.

I'm not hondata, so I don't have the official answer obviously, but I seriously doubt that will happen without a large base of people willing to purchase an extra feature. Obviously, hondata has the final say in all of this, not me.

I think the cost is minimal.....but ok it is their call. I would like to buy such a system but without using my bosch wideband interface I can't use it.