Posted By: Montclaire
Cheapest way to run a wideband for carb tuning? - 02/28/23 06:56 AM
I need to dial in my carb and want to use a wideband O2 sensor as a diagnostic device. The sensor only needs to mount temporarily. Since the car has 3" exhaust with cutouts, I ordered a set of header reducers and a walker 2.5" pipe with an O2 bung pre-installed. The other option was a unit that mounts an O2 in the tailpipe but I figure the cutouts get me closer to the engine.
The plan was to hook up the O2 to a basic multimeter, which would work for narrowband but apparently not for the wideband. So, back to the drawing board. I'm searching online for a cheap wideband gauge but that isn't going so well. The least expensive seems to be the AEM 30-4110 at around $170, which I have a hard time justifying. I'm thinking there HAS to be a super cheap way to link the O2 to either my phone or a laptop with basic freeware that will give me a digital AFR readout.
Again, this is a temporary, less than ideal hook up for the sake of having an extra layer of feedback for carb tuning. I know very little about oxygen sensors or electronics so whatever you suggest will have to be simple to operate. I'd like to use a LSU 4.9 sensor, which seems to be the standard in 2023. From what I've read, the 4.2s need to be calibrated, while the 4.9s do not.
Thanks
The plan was to hook up the O2 to a basic multimeter, which would work for narrowband but apparently not for the wideband. So, back to the drawing board. I'm searching online for a cheap wideband gauge but that isn't going so well. The least expensive seems to be the AEM 30-4110 at around $170, which I have a hard time justifying. I'm thinking there HAS to be a super cheap way to link the O2 to either my phone or a laptop with basic freeware that will give me a digital AFR readout.
Again, this is a temporary, less than ideal hook up for the sake of having an extra layer of feedback for carb tuning. I know very little about oxygen sensors or electronics so whatever you suggest will have to be simple to operate. I'd like to use a LSU 4.9 sensor, which seems to be the standard in 2023. From what I've read, the 4.2s need to be calibrated, while the 4.9s do not.
Thanks