John,
Can you clarify slightly for me please.

I would like to migrate this circuit to my Skyline as a method of measuring AFR whilst tuning, would you consider this suitable for measuring AFR in conjunction with one of them fancy 5 wire Honda sensors and another independant way of measuring knock (which I already have).

I know I'm putting you on the spot with this, but if you get it wrong, your toast

 

John,
Can you clarify slightly for me please.

I would like to migrate this circuit to my Skyline as a method of measuring AFR whilst tuning, would you consider this suitable for measuring AFR in conjunction with one of them fancy 5 wire Honda sensors and another independant way of measuring knock (which I already have).

I know I'm putting you on the spot with this, but if you get it wrong, your toast

 

You need a more complex and costly circuit to read the 5 wire. Look for the DIY Australian wideband website which explains all.

 

John - where did you get hold of the NTK L1H1 from? I'm finding it a little hard to track one down!

 

Well the Dawes AFR is basically the same....

They all have some value, but compared to a wideband lambda they are basically misleading IMHO.

[Edited by john banks - 1/8/2003 10:53:29 PM]

 

Did you find your NTK L1H1 Nom?

F

 

What I meant to say was that you should do a calibration check on your ARFs every now and then as they can read incorrectly after a while.

F

 

I brought 1 of these along with other goodies from a guy off here...works a treat

 

If you are thinking of making one, it may be worth fitting a 15v 1.3w zener diode across the supply lines. This will eliminate any high voltage spikes (on supply line)that could possibly damage the 3914 IC.

Just a thought.....

Q : John, Is the lambda sensor in the up pipe on early WRX (92) the normal (i.e - suitable for this reader) ??

Si

 

I believe so.

 

Cheers mate!

How you getting on with the boost controller John??

Si

 

Can anyone take a pic of this PIN21 as an idiots guide


I picked up the Lamda feed from the ECU connector B136 PIN 21 as John did. It's the first connector facing you (lower)and was coloured Blue on my UK MY00. I used one of those blue Scotchlok connectors.

 

Boost controller - I just use a Dawes it is easy to adjust and works

 

Think i need to get one of those.
Does it make the boost pattern more stable John?
I seem to get quite a spike on mine at moment.

Si

 

Yes

 

any pics please