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That was the problem we had with 14Point7 kits, they started out with genuine sensors but the later Spartan 2 kits started arriving with fake LSU 4.9s and the owner was caught out and denied of such. Gareth was ordering the Spartan kits and then adding genuine Bosch sensors he sourced direct from his Bosch supplier, so we Aus people had access to genuine quality WB kits.

Jaso74 wrote: ↑Thu Jan 25, 2024 5:11 pm Hey all .
Been looking for a wideband sensor/kit to tune my in progress rebuild project (VR 355 424 ecu Auto).
I have hardware ready,(nvram etc), other than a wideband sensor and associated wiring , weld in bung etc. Trouble is there is a few around for sale and not sure what to get or where from .
Looking for suggestions , rather buy once and be happy than wish I'd asked.

Any suggestions appreciated .

I drive a VR, 355, auto, NVRAM, and am using the innovative wideband.
I'm happy with it. And it uses the Bosch sensor.
I have a bung in the drivers side collector area, as the passenger side has narrow band for stock narrow band things

i switched from innovate kits to the aem x-series years ago. i run 1 in each bank.

the 4.9 sensors are a lot better for longevity imo.

I ended up ordering a spartan 3 lite with bosch sensor and gauge today with from Just race parts.
I guess I will have to remove the pull up resistor from the ecu board and figure out where I'm able to fit sensor bung into exhaust next.
Any tips ?

For the pull up, I thought I remembered that being a thing on a 424, but I have not run a 424 of my own car. So I went looking for the information for you and only found "I am using 12P with a wideband controller analog output connected to pin D8 but there is an AFR offset. Why?" in the FAQ page here viewtopic.php?f=7&t=1396

So maybe its only on the 808 and with some widebands, and not a common problem as i've never hit on an 808 either. So I think that's safe to ignore, and just set "WideBand - WideBand 0V AFR" and "WideBand - WideBand 5V AFR" in 11P so that the logs match the display.

Cool that sounds good . I will give that a go and see how it works !

So this might be obvious after I ask, but you have to keep the OEM narrowband O2 in and fit the wideband O2 separately? As the pcm will need the narrowband to run and wideband is just for tuning accurately?

Pretty much. Some wideband kits can also output narrowband signals so you can fit wideband sensor in place of the narrowband sensor and wire the narrowband output into the NB sensor input on the ecu. NB sensor is there to help the ecu make minor adjustments to fuel trims etc. No Narrowband signal will throw a CEL

Yep. The factory code uses the narrowband. The wideband is just data for tuning. Years ago there were reports of the narrowband simulation not working well. I am not sure if that has improved, or differes between widebands. Plan to keep the factory narrowband and install a new bung for the wideband if you can, its easy enough and the safe option.

Cool bananas. Cheers