Air Fuel Meter

[Dave M]

Been thinking about fitting an air fuel meter and after looking at the internet there seems to be a lot of options re meters etc. There are a lot of options regarding the meter itself but most seem to be LED with Lean, Normal and Rich indications. Its the sensor Im not sure about ie what type to use and where to locate it. Ive read a thread by Flying Farmer saying he has fitted a sensor in the exhaust link pipe which would seem the obvious place to me. Is the fitting of a wideband sensor more benificial as this will give a more detailed reading or is the standard sensor and basic read out Ok? Just wondered if anyone had details of fitting one of these meters?


Dave

[Stagdad]

Yes Def go wide band ,narrow is more for hooking up to an ecu and even then it only really tells it if it is over or under the 1:14.7 but not by how much as I understand it.i still have mine for sale if you are interested,all new and I could let you have it for £120 cost me £170 with import and bring it to ND .it has centre readout and led indicators around the rim.pictures in the forsale section.
cheers Steve
ps won't get offended if your not interested just didn't know if you had seen my add ,the above sounds a bit hard sell lol

[KOY 23]

Hi Dave.

Catch tanks, AFR meters, welcome to to the world of non standard fuelling

I fitted a wideband gauge AEM 30-4100. I think it was around £200 from memory. The carb jetting you have should be about right for your engine, if standard but its your call. You need a wideband as it will measure from 10 to 20:1. A narrowband will only measure around 14.7:1 which is no good for tuning. My sensor is fitted to even bank down pipe near the rack. Neil's place is probably better, although there should be little variation between banks.

John.

[Dave M]

Thanks for the info guys and yes Steve I may be interested, whats involved with fitting the sensor, does the take of point require welding to the exhaust or is there some sort of adaptor that fits into a drilled hole?
John thanks for the welcome into the world of non standard fuelling, thing is once one of you guys comes up with a fuel injection kit Im gonna want to go down that route. Re the jetting on the weber Im sure it will be fine as my engine is standard but just wanted a reliable way of monitoring the emmisions etc as my Gunson exhaust analyser is reading negative for some reason. I also have the issue with the suspected air leak which is proving difficult to track down and may not even exist.
Dave

[KOY 23]

Hi Dave.

Yes there is a bung which has to be welded into a hole drilled into the exhaust. I bought a drivers air vent from Just Triumph, took the guts out and pushed in my gauge, perfect fit.

It really is the only way to see how well your engine is running. My sensor now controls the EFI so your money wont be wasted when Steve's manifolds are available for sale.

John

[KOY 23]

Yes Def go wide band ,narrow is more for hooking up to an ecu and even then it only really tells it if it is over or under the 1:14.7 but not by how much as I understand it.i still have mine for sale if you are interested,all new and I could let you have it for £120 cost me £170 with import and bring it to ND .it has centre readout and led indicators around the rim.pictures in the forsale section.
cheers Steve
ps won't get offended if your not interested just didn't know if you had seen my add ,the above sounds a bit hard sell lol

Surprised its still for sale, I know of a number of people who have a need for it and its a good price.

[Dave M]

Yes Def go wide band ,narrow is more for hooking up to an ecu and even then it only really tells it if it is over or under the 1:14.7 but not by how much as I understand it.i still have mine for sale if you are interested,all new and I could let you have it for £120 cost me £170 with import and bring it to ND .it has centre readout and led indicators around the rim.pictures in the forsale section.
cheers Steve
ps won't get offended if your not interested just didn't know if you had seen my add ,the above sounds a bit hard sell lol

Ok Steve, Johns convinced me, god Im a pushover. Im hoping to make it to ND so can pick it up from you there, obviouslly will bring the £120 with me.

Cheers

Dave

[Stagdad]

Ok Dave ,your name is on it.
cheers Steve

[flying farmer]

Wideband sensors are definately the sensible way to go. I only have cheap standard sensors in my 5 cars which makes the interpretation of the results rather hit and miss, but I have had about 15 years of practice doing it.

I have one meter on a jack plug and sockets on all my cars so I can simply swap from one car to another.

The only ones that give a steady reading with the standard lambda sensor are the Twin plenum Vitesse engined Toledo still running its original efi so it should work ok, and the Stag engined estate running the original Strombergs which can be set to give a steady mixture right through the rev range much to my suprise, bearing in mind it has standard needles but tubular manifolds and a straight through exhaust!

Neil

[Malc_R]

I was steered towards the AEM Wideband AFR meter which uses the Bosch UEGO sensor. The kit came from EFIParts.co.uk

http://www.efi-parts.co.uk/index.php?productID=204

If you are going into s/steel exhaust pipes they do a steel weld-on boss and bung for if/when you want to take the UEGO out.

AEM themselves also do a 'no-weld' strap fastening, but the smallest size they do is for a 2" pipe...

http://www.aemelectronics.com/no-weld-o2-sensor-mount-2-inch-660

HTH

Malcolm

[mjheathcote]

I've had the AEM wideband for a few years now.
I welded the boss to the nearside link pipe, on the top, so the sensor is tucked just behind the crossmember.
Seemed the most logical place, and nicely protected.
Still running a Holley, it does dance around a bit being very sensitive to throttle movement.

[jusm]

Hi Dave, probably a bit late, but I installed this over the weekend.
Its working well and gives a real sense of comfort that you are getting the best from the car under all scenarios.

http://prosportgauges.com/wideband-air-fuel-ratio-kit-Amber-2.aspx

Cheers
Justin.

[bullstarz]

I have got two spare, was going to put them on ebay but have been too busy. One is an AEM wideband that was on my old set up only been used for under a year. Have the box and everything. The other is a brand new PLX wideband, i was going to have two on my new set up but one will due. Its only just turned up yesterday from the states. This is a great bit of kit, it can be programmed to look like any gauge you want as its screen is like a colour mobile phone. http://www.plxdevices.com/product_in...DBDSMAFR_DM100

Both have an analogue output if you are running an after market ecu so you can use closed loop fuelling.

If any ones interested let me know.

[Dave M]

Thanks for all the info guys, very useful, looking forward to getting it fitted now, another guage to watch