O2 and EGT sensors - 2002 FZJ105 Landcruiser

[physh]

I want to put O2 and EGT sensors on my vehicle to test some things, my 2002 FZJ105R GXL auto (4.5 1FZ-FE) apparently does NOT have any O2 sensors, it always runs a fixed fuel map or something.

Any suggestions on how to put this sort of thing in?

I have pacemaker extractors, is this the best place to drill for the EGT / O2?

Can I put them close together?

I want something fairly simple, not too many bells and whistles.
I just want to measure current exhaust temperature and A/F ratio (realtime whilst under load)

Cheers
Nick

[David_S]

If you want to read the actual AFR you will need a wideband O2 sensor and controller such as the Innovate LC-1. Narrow band sensors only tell you if you are running rich or lean. There is a lot of info on sensors on the Megasquirt site (just Google megasquirt) and also on the Innovate Motorsports Forum. I am installing the LC-1 as part of a carb to efi conversion. In general the O2 sensor should be upstream of any cat and preferably after your pipes come together. There is a litltle display, Megaview, described on the Megasquirt site which enables you to read the AFR in real time.

Am not using an exhaust temperature sensor so can't help there.

David