afr gauge recomendation and defi egt gauge problem

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30-06-2008, 06:35 AM

scoooby slayer

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afr gauge recomendation and defi egt gauge problem

hi im looking to fit a afr gauge to the cos can anyone recomend one thats accurate.
and my defi exhaust temp gauge seems to be faulty it will suddenly jump from 600 to 900 instantly then drop to 500 instantly im thinking temps cant raise and fall that quick so must be a fault. is the temp sensor that fits in exhaust available separately ?

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30-06-2008, 07:23 AM

pa_sjo

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The only truly accurate ones are the calibration quality ones, but they cost thousands... Out of all the cheapie ones, there isn't much between them, so just pick whichever one you like the look of. They all 'work'.

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30-06-2008, 08:05 AM

R5FORD

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go for a stack one mate.. got one on my shopping list

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30-06-2008, 08:09 AM

Mike Rainbird

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Mine lasted several years of constant abuse including ALS before it started to do as you describe. Firstly I would check the connector plug, as despite supposedly being a proper water-proof connection, the pins do get furred up. I managed to get another year out of mine by cleaning these before it needed replacing. And yes the sensor can be replaced

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30-06-2008, 08:33 AM

scoooby slayer

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Quote:

Originally Posted by Mike Rainbird

thanks mike il give it a clean tonight. should i take the sensor out of the exhaust and wire brush the probe aswell ?

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30-06-2008, 08:35 AM

CharlieSaff

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I'm well pleased with my Stack one

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30-06-2008, 08:39 AM

Mike Rainbird

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Quote:

Originally Posted by scoooby slayer

thanks mike il give it a clean tonight. should i take the sensor out of the exhaust and wire brush the probe aswell ?

No, just the connector plug needs cleaning. If this fails to do the job, then the sensor has to be replaced.

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30-06-2008, 08:43 AM

scoooby slayer

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Quote:

Originally Posted by Mike Rainbird

No, just the connector plug needs cleaning. If this fails to do the job, then the sensor has to be replaced.

ok mate so when i undo the nut on the pipe that fits on exhaust is the connection in there ? and do you sell the sensor if i need one and how much ?

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30-06-2008, 08:53 AM

Mike Rainbird

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Quote:

Originally Posted by scoooby slayer

ok mate so when i undo the nut on the pipe that fits on exhaust is the connection in there ? and do you sell the sensor if i need one and how much ?

No! Follow the wire back from the sensor and it will probably be sitting in the scuttle somewhere

. It is a black plastic plug in connector, which enables the sensor to be swapped over as easily as unplugging the fans

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30-06-2008, 09:13 AM

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RickyLee53

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Quote:

Originally Posted by pa_sjo

Any k type thermocouple will be pretty accurate and don't cost that much. I always use this over any in car type gauge.

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30-06-2008, 09:15 AM

#11

pa_sjo

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Quote:

Originally Posted by RickyLee53

Any k type thermocouple will be pretty accurate and don't cost that much. I always use this over any in car type gauge.

Sorry, I was talking about lambda sensors

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30-06-2008, 11:32 AM

#12

scoooby slayer

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seen one on ebay for £40 just reads lean, optimum and rich. just want an extra warning if anything drastic goes wrong.

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30-06-2008, 11:35 AM

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sbd16v

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Quote:

Originally Posted by scoooby slayer

seen one on ebay for £40 just reads lean, optimum and rich. just want an extra warning if anything drastic goes wrong.

sounds like a narrow band to me and its a waste of time

will be telling you on boost your car is optium if its around 14:1 when it should be closer to 11's

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30-06-2008, 11:36 AM

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Christian and Beccy

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Quote:

Originally Posted by scoooby slayer

seen one on ebay for £40 just reads lean, optimum and rich. just want an extra warning if anything drastic goes wrong.

That'll be shite. Probably Autometer? You'll find it will always read rich, AFR's for Turbo's cars and N/A cars are vastly different and most narrow-band gauges are aimed at N/A.

Wideband or nothing IMO.

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30-06-2008, 11:36 AM

#15

Christian and Beccy

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Beat me!!

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30-06-2008, 11:37 AM

#16

JamesH

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Quote:

Originally Posted by sbd16v

sounds like a narrow band to me and its a waste of time

will be telling you on boost your car is optium if its around 14:1 when it should be closer to 11's

Completely agree

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01-07-2008, 06:38 AM

#17

scoooby slayer

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took the sender out of my downpipe and its was half black and half white. cleaned with sandpaper and works perfect again

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01-07-2008, 07:24 AM

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jb fletch

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So whats the best, cheapest AFR then ? ? ?

Me need one but not got mega money for one !

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01-07-2008, 07:26 AM

#19

CossieRich

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JB,

The stack one seems good. Well if its good enough for Rodney, then it will be good enough for us lot. Not sure if its the cheapest mind

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01-07-2008, 08:41 AM

#20

scoooby slayer

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where can i get a price on a stack afr gauge ?

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01-07-2008, 08:42 AM

#21

Mike Rainbird

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Quote:

Originally Posted by scoooby slayer

where can i get a price on a stack afr gauge ?

On my website

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01-07-2008, 09:16 AM

#22

Stu.H

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I had a DynoTune one in my car, and when Karl was live mapping it, he said that it was pretty accurate when compared with his own equipment...

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01-07-2008, 09:57 AM

#23

Mike Rainbird

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http://www.randbmotorsport.co.uk/sho...?ProductID=417

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01-07-2008, 04:21 PM

#24

KSA-Cossie

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Stack AFR gauge from mike r is best,the sarcasm is free too !!!

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01-07-2008, 04:58 PM

#25

trevCOSS

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dont most wideband afr gauges use the same bosch sensor including lots of the more proffesional ones? in which case how can the cheaper ones be less accurate? Is it how they interpret the sensor?