lambda monitor gauges?

[dodgerover]

I'm thinking of installing a lambda sensor on the transit to keep an eye on the mixture, does anybody have experience of what sensor to use and which of the gauges work best? I've got a little gunsons gas analyser but that doesn't help me if the mixture is off under load? Thanks

Though I'd better as it's a 2l pinto running LPG so no fancy electronics to piggy back from!

[sowen]

I've got an AEM wideband kit, it's probably the best accessory I've ever bought for my cars! Just weld a boss into the exhaust downpipe, connect a few wires, and watch what the mixture is doing as you're driving. It's made setting up carbs a lot easier, and now I've got mine wired into my Megasquirt conversion on my SD1 to help map that too.

[dodgerover]

This one?
www.efi-parts.co.uk/index.php?productID=204

That would be an elegant solution - bit pricy though as usually sadly I was thinking something a bit more in the "knocked together with 2 bricks and a rubber chicken" price range as its not something I plan on using a lot...at the moment anyway

Would a wideband bosch sensor and one of the a/f ratio gauges off ebay work? It is essentially only reading the voltage isn't it?

[welshpug]

I've got the AEM kit too, recommended by Sandy Brown, he was vry happy I had the same ones that he uses and wired up for mapping, I've not got it running closed loop with the DTA

that kit includes a Bosch 6 wire sensor, the AEM contains the controller in the gauge pod, most others will have a separate controller unit which is why the gauges can seem a lot cheaper.

[93fxdl]

Some info and advice here.
www.volkszone.com/VZi/showthread.php?t=180708
Ttfn Glenn

[ChasR]

I was considering buying a wideband kit for my RST but a number of peeps informed me that off the shelf solutions were very much a finger in the air measurement when compared to the setup that dyno users utilise.

The AEM kit looks great, although my friend's item in his Rover (Jimbo200SX on here) had a habit of his losing readings, generally if the car was floored or coasted.

[welshpug]

probably because it went off the scale rich/lean, its what they do if you go outside the normal AFR's.

[dodgerover]

Mar 29, 2015 10:21:14 GMT ChasR said:

I was considering buying a wideband kit for my RST but a number of peeps informed me that off the shelf solutions were very much a finger in the air measurement when compared to the setup that dyno users utilise.

The AEM kit looks great, although my friend's item in his Rover (Jimbo200SX on here) had a habit of his losing readings, generally if the car was floored or coasted.

Does that mean the readings are going out of the range the sensor can read? ie mega weak/ rich? Is that with a wide band sensor?

[sowen]

Mar 28, 2015 21:14:45 GMT dodgerover said:

This one?
www.efi-parts.co.uk/index.php?productID=204

That would be an elegant solution - bit pricy though as usually sadly I was thinking something a bit more in the "knocked together with 2 bricks and a rubber chicken" price range as its not something I plan on using a lot...at the moment anyway

Would a wideband bosch sensor and one of the a/f ratio gauges off ebay work? It is essentially only reading the voltage isn't it?

Yeah that's what I've got, I reckon I've saved money and released some extra under-bonnet ponies with my kit, had it on my V8 Land Rover, then turbo P6, now it's on my V8 SD1. Really does help to fine tune the fueling if you've got control over that.

Mine reads from 10 to 17, either side of that is off the scale. Under 11 I think is just wasting fuel, I think the recommended maximum is somewhere around 12-11 under what. Going over 17 just means it's gone mega lean overrun.

[ChasR]

jimbo200sx's had habit of staying at 13:1 despite having the throttle buried and then going completely blank without warning. Yes, on the overrun the gauge was reading off the limits.

However, unless evidence is shown that the gauges are accurate I shall be keeping my cash in my pocket for now. I normally would not believe such people if they hadn't done quite a bit of work on cars over the years.

www.talkaudio.co.uk/ipb/index.php/topic/376238-which-afr-gauge/

It's worth bearing in mind that any kit which uses a Bosch LSU4.x sensor is only mildly accurate, especially in the richer-than-stoich range. I wouldn't trust one at all below 12:1 or with EGT's above 700C at the sensor. The NTK L1H1 or L2H2 is better, but still not a reference sensor suitable for professional tuning. Those sensors cost £300+ alone, without the controller.



This amateur kit is OK for finger in the air type of measurement..

[welshpug]

I know many reputable mappers and engine builders that use the AEM unit and bosch sensors for mapping £15k + engines.

[froggy]

the Bosch sensors overheat on turbo engines if you place them near where the std narrowband sensors are fitted . I run mine 500mm from the turbine outlet and haven't had any issues since . The only downside to the aem is the plug is specific to aem despite having the Bosch part number on the sensor you can only buy from aem . The innovate uses the std sensor that's found in lots of modern stuff .

[dodgerover]

Ok end of the tax year is coming up and a potential bill so i'm adopting the 2 bricks and a rubber chicken approach at least until I've done my return fully (a finger in the wind is better than nothing I guess) -

Which modern vehicles have a wide band lambda as standard - preferably somewhere accessible with a socket and angle grinder so I can grab the exhaust boss from a scrapper too

[froggy]

Late vw 2006 on petrol and diesel have the uego sensor that will fit the innovate lc1 gauge

[elmotheewokking]

I have a purely analogue AEM gauge in the Dolly. Works well, but I have become a little fixated on getting the numbers bang on at all times... Too many needle choices for my application.
I would suggest getting one with a digital read out though, trying to read the needle whilst driving isn't easy!





Also now has a black bezel fitted.