Installing AFR gauge on AUM (wideband/ME7.5)

VAG-Slag

Registered User
As I'm getting in the final few pieces for my hybrid build my attention is drawn to monitoring, so I'm thinking oil pressure, AFR and possibly EGT gauges are in order...

On an AUM engine (which I understand is wideband?) do I need a second lambda in the down pipe for AFR or can I just tap into the original one?

If so what's the best way of doing this, at the ECU?
 

<tuffty/>

Badger 5 Edition...Its all about the flow...
Staff member
Moderator
You will need a separate sensor

<tuffty/>
 

VAG-Slag

Registered User
Not the answer I was hoping for, but thanks none the less! . .

I suppose I don't need EGT and AFR, one or the other will do... Can do AFR's on the liquid gauge anyway
 

VAG-Slag

Registered User
I know they're not the same... As I said though, can do AFR on liquid if I have to so maybe look into EGT

I'm sure you would tuffty, but the last thing I need right now is more things to spend money on :dejection: sh!t is getting outa control over here! lol
 

VAG-Slag

Registered User
Yea, BBT Dan does a reasonably priced EGT gauge... Only thing is I'm running a ported stock mani so will be difficult to weld anything onto. Was wondering if I'd get away with drilling and tapping into the top (bit bodge obvs!)

Just had a quick look at those VEMs dual gauges- Doesnt seem much cheaper and the gauge it's self looks hideous!
 

VAG-Slag

Registered User
Oh ok, always thought it had to be in the mani or turbo... Will have a go at sticking it on the DP, I assume as close to the turbo as possible is best?
 

VAG-Slag

Registered User
Nice work... I think for the moment I'll just look into EGT and perhaps do something about AFR further down the line.

As always, thanks for your input mr tufft!
 

badger5

www.badger5.co.uk
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i would weld onto the k03 manifold as opposed tap as the manifolds less likely to crack from the differential expansions on welded than tapped into the manifold

or in downpipe and allow for its temp to be lower reading than if in collector/turbo area
 

VAG-Slag

Registered User
oh right, think I'll try get in in the mani then... Mainly cos I don't fancy drilling/welding the turbo though!

Thanks!
 
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Mr Overboooost

Registered User
best place in my opinion for the EGT is in the manifold .
had one in my last car and it worked really well as always a good idea to keep an eye on the egt's
 

superkarl

MAN OF STEEL
The best place is the place the mapper knows about
 

VAG-Slag

Registered User
I see what you're saying Karl but I'm not doing this for the mapper... I'm doing for me when I'm out on track and want to accurately monitor EGTs
 
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