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anyone use afr gauge.... what one?

Posted: Thu Dec 04, 2014 6:20 am
by rxsmiddy
most seem to read max at 20:1........................
really need something that reads 30:1 so can tune to around 20:1

Re: anyone use afr gauge.... what one?

Posted: Thu Dec 04, 2014 8:28 am
by derk
someone will correct me but I don't think 02 sensors read that lean once you hit 20:1 your already in dangerous country

you need to set everthing rich and then tune the engine lean not the other way around :D

Re: anyone use afr gauge.... what one?

Posted: Thu Dec 04, 2014 1:21 pm
by tweake
rxsmiddy wrote:most seem to read max at 20:1........................
really need something that reads 30:1 so can tune to around 20:1


theres a couple that will. details escape me at the mo but there is a good thread on patrol4x4.com with details of brands and sensor models for use on diesels.

Re: anyone use afr gauge.... what one?

Posted: Thu Dec 04, 2014 2:10 pm
by rxsmiddy
derk wrote:someone will correct me but I don't think 02 sensors read that lean once you hit 20:1 your already in dangerous country

you need to set everthing rich and then tune the engine lean not the other way around :D


we are talking diesel here not petrol, ritch means high egts witch means engine damage

Re: anyone use afr gauge.... what one?

Posted: Thu Dec 04, 2014 2:44 pm
by churchill
Is this for Common Rail tuning?

Re: anyone use afr gauge.... what one?

Posted: Thu Dec 04, 2014 4:24 pm
by rxsmiddy
nah this is for 1hdt tunning

Re: anyone use afr gauge.... what one?

Posted: Thu Dec 04, 2014 6:34 pm
by churchill
Interesting, so for full power is it a stoichiometric tune or lean or rich? Sorry, off topic.

Re: anyone use afr gauge.... what one?

Posted: Wed Dec 24, 2014 4:56 pm
by skidmark
I run a pair of these on my 1uz, http://www.innovatemotorsports.com/products/MTXL.php

They go to 22:1 on petrol but the table states diesal to 99:1
They come with leads to plug in to a computer to change parameters,I only assume to set up for diesal

Re: anyone use afr gauge.... what one?

Posted: Wed Dec 24, 2014 5:16 pm
by Trundle
You just get them off Nz performance they are good for diesel tuning I have one

Re: anyone use afr gauge.... what one?

Posted: Wed Dec 24, 2014 5:47 pm
by skidmark
Trundle wrote:You just get them off Nz performance they are good for diesel tuning I have one

That's where I got mine from aswell.best deal I could find