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Joined: Jul 2008
Posts: 690
Veteran
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OP
Veteran
Joined: Jul 2008
Posts: 690 |
I was looking at one of those Air/Fuel ratio gauge kits you can buy now. Does anyone know how theyre fitted? I always thought they where a sensor in the exhaust at some point and if thats the case i wont bother, dont fancy making any holes like. Cheers
I HATE cars.
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Joined: Nov 2003
Posts: 12,002
Wiki Master
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Wiki Master
Joined: Nov 2003
Posts: 12,002 |
Some use the cars OEM Lambda sensor - if you car doesnt have one, then one will need fitting to the exhaust.
They are only as accurate as the sensor, and if they use the OEM sensor - thats not very accurate....
The expensive ones use a wideband lambda - these are accurate enough to tune with, but the price difference is huge...
One using a wideband lambda is £200+, one using a std lamdba £30ish.
TBH Id only use one if you planning on using it to tune the car, in which case spend out on a good one, if your checking for problems, compromise and get an EGT gauge instead at £80-£100
What If There Were No Hypothetical Questions?
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Joined: Dec 2003
Posts: 5,683
Wiki Guide
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Wiki Guide
Joined: Dec 2003
Posts: 5,683 |
Yeah, basic ones don't really tell you anything. If you know you've got bad fuelling, it's not going to tell you much! I think the cheap one gets you a probe as well, I have one in my garage, I will get a pic.
"C20 LET bang"
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Joined: Dec 2003
Posts: 5,683
Wiki Guide
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Wiki Guide
Joined: Dec 2003
Posts: 5,683 |
I dug these out: The Air/Fuel gauge has four wires (going to the ECU) and an exhaust probe! The one on the right is a 'lean' gauge, which goes red/green depending on the fuelling (for turbo engines).
"C20 LET bang"
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