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A wideband is an AFR gauge or Lambda gauge/sensor, I'm sure you've heard of those terms before.
They read the air to fuel ratio in the exhaust system. The factory GM computers use narrowband o2 sensor that can only read how lean and or rich of stoich (14.7 for regular gas) the fuel mixture is. They only give a percentage that it is off and those are what the fuel trims show. The problem with them is that they do not read in open loop or under hard acceleration. This is why using a wideband is required, so you can log the real time AFR to adjust the airflow tables.
I do all tuning on the street and so can you. If you have the HP Tuners pro kit you can wire a wideband straight into the HP Tuners MPVI and create a wideband channel to log the data.
I am running one of those cheap ones from ebay, no problems yet except for the pipe does get pretty hot like yall mentioned. I am looking at changing it at some point
I do all tuning on the street and so can you. If you have the HP Tuners pro kit you can wire a wideband straight into the HP Tuners MPVI and create a wideband channel to log the data.
I did buy the Pro version, but mine came without instructions.
I assumed the little green thing on the side was for wideband.
I thought the wideband clamped in the exhaust, what do you do, run wires under the car to the cabin?
HP Tuners website and help file normally have the information on some of that stuff for the MPVI like this picture.
You'd take the wideband signal wire and wire it to the MPVI and ground it. Then create a channel from there.
The wideband needs it's own o2 sensor bung, some headers come with a 3rd bung or one needs to be welded into the exhaust. The wires ran into the cabin and the gauge setup somewhere as well. I've ran AEM widebands for years, never had a problem. Any new wideband runs pretty much the the same exact bosch sensor anyway so brand does not matter.
This is the one I have on my truck. The tube has some kind of paint or coating on it that may help with intake air temps but I've never compared to just the aluminum pipe so can't say for sure. The black looks better under the hood to me though unless you have other chrome.
12-29-2017, 02:50 PM
