Fitting an AFR Gauge and Lambda Sensor to an SFA
Fitting an AFR Gauge and Lambda Sensor to an SFA
So I finally got around to fitting my Air Fuel Ratio (AFR) Gauge to Dadz powered by the Lambda Sensor I imported from JustLambda in my home town (Hull) in the UK. :roll:
After battling to find a purpose made flange to weld onto my exhaust I went on the hunt for a lekker nut to weld on instead.
I finally found the correct threaded nut, they had two so I bought them both - so there's one going to anyone that needs to install an AFR or EGT Gauge.
Quite a while since I picked up a welder but all went to plan: :Geek:
1. First I blew a hole in the 50mm stainless steel free flow pipe (just after the joint with the Brospeed Manifold) with an Oxy Acetylene Cutting Torch, beats drilling with my makita
2. Then MIG'd the nut to the pipe - all straight forward, 15 minute job.
I ran a 2mm wire from the AFR gauge in ripsleeving (taped to death as per the usual spec) :roll: and took it through the drainage plug in the front passenger foot-well. :Geek:
I mounted the AFR Gauge on the steering column, it fits so perfectly that one would almost think that the space was purpose made for the Gauge, or any Auto Gauge
Of course I took peekchaz, peekchaz speak 1000 words in any language nê
After battling to find a purpose made flange to weld onto my exhaust I went on the hunt for a lekker nut to weld on instead.
I finally found the correct threaded nut, they had two so I bought them both - so there's one going to anyone that needs to install an AFR or EGT Gauge.
Quite a while since I picked up a welder but all went to plan: :Geek:
1. First I blew a hole in the 50mm stainless steel free flow pipe (just after the joint with the Brospeed Manifold) with an Oxy Acetylene Cutting Torch, beats drilling with my makita
2. Then MIG'd the nut to the pipe - all straight forward, 15 minute job.
I ran a 2mm wire from the AFR gauge in ripsleeving (taped to death as per the usual spec) :roll: and took it through the drainage plug in the front passenger foot-well. :Geek:
I mounted the AFR Gauge on the steering column, it fits so perfectly that one would almost think that the space was purpose made for the Gauge, or any Auto Gauge
Of course I took peekchaz, peekchaz speak 1000 words in any language nê
- Family_Dog
- Moderator
- Posts: 12699
- Joined: Tue May 22, 2007 10:09 am
- Town: Klerksdorp
- Vehicle: Hilux DC SFA, Hilux 2.7 DC, Hilux 2.7 SC, Prado 95 VX
- Real Name: Eric
- Club VHF Licence: HC101
- Location: Klerksdorp, NW
- Contact:
Re: Fitting an AFR Gauge and Lambda Sensor to an SFA
Nice job, Rich. Hope you used silicon wire!
-F_D
-F_D
White Fang: 1999 2.7i DC Raider 4x4
Bull Dog: 1987 4Y-EFI 2.2 DC 4x4
Pra Dog: 1998 Prado VX 3.4
Hound Dog: 2000 2.7i SC 4x4
One Staffie, One Jack Russell, One Ring Neck Screecher, 17 Fish of questionable heritage
- Jaws
- LR 4WD Full Lockers
- Posts: 536
- Joined: Fri Dec 14, 2007 11:41 am
- Town: Sharonlea
- Vehicle: 2009 D4D 4x4
- Real Name: Herman
Re: Fitting an AFR Gauge and Lambda Sensor to an SFA
According to the gauge you are running Rich :problem:
- Family_Dog
- Moderator
- Posts: 12699
- Joined: Tue May 22, 2007 10:09 am
- Town: Klerksdorp
- Vehicle: Hilux DC SFA, Hilux 2.7 DC, Hilux 2.7 SC, Prado 95 VX
- Real Name: Eric
- Club VHF Licence: HC101
- Location: Klerksdorp, NW
- Contact:
Re: Fitting an AFR Gauge and Lambda Sensor to an SFA
Sharp!!Jaws wrote:According to the gauge you are running Rich :problem:
-F_D
White Fang: 1999 2.7i DC Raider 4x4
Bull Dog: 1987 4Y-EFI 2.2 DC 4x4
Pra Dog: 1998 Prado VX 3.4
Hound Dog: 2000 2.7i SC 4x4
One Staffie, One Jack Russell, One Ring Neck Screecher, 17 Fish of questionable heritage
Re: Fitting an AFR Gauge and Lambda Sensor to an SFA
Yebo :!:Jaws wrote:According to the gauge you are running Rich :problem:
That's at tickover Herman, we set the Dicktators with retarded ignition right down at 750 to 1000rpm to make the Idle Control Valve (I.C.V.) pull the motor back up - it consequently over fuels but allows max. horsepower when crawling up an incline :Geek:
Last edited by Dadz Toy BFI on Sun Aug 02, 2009 8:54 pm, edited 1 time in total.
- Jaws
- LR 4WD Full Lockers
- Posts: 536
- Joined: Fri Dec 14, 2007 11:41 am
- Town: Sharonlea
- Vehicle: 2009 D4D 4x4
- Real Name: Herman
Re: Fitting an AFR Gauge and Lambda Sensor to an SFA
I thought so, I was just playing with your name
- ravenvonmolendorff
- High Range 4WD
- Posts: 50
- Joined: Sat Jun 13, 2009 10:26 am
- Town: CAPE TOWN
- Vehicle: Toyota Hilux 4x4 DC,Weber 38 convertion,Wildcat freeflow system.Rear Gearmax difflock
- Real Name: Andre
Re: Fitting an AFR Gauge and Lambda Sensor to an SFA
Sorry to sound stupid what is this AFR gauge for?
Thanks André
Thanks André
-
- Monster Truck
- Posts: 7249
- Joined: Fri Oct 12, 2007 2:38 pm
- Town: Cape Town
- Vehicle: Honda Jazz
- Real Name: Bretton
- Location: Brackenfell
Re: Fitting an AFR Gauge and Lambda Sensor to an SFA
The lambda sensor measures the air-fuel ratio(AFR), and the AFR gauge displays the results...ravenvonmolendorff wrote:Sorry to sound stupid what is this AFR gauge for?
Thanks André
It's kind of like having a CO meter permanently plugged into the exhaust, you will always be able to see if the engine is running lean or rich, under all driving conditions... and then adjust it if nessecary...
Richard, BTW... if the engine is running to rich at idle, it is possible to adjust the fuel map on the Dicktator, if you get the AFR right at low RPM you will gain more power... running too rich will steal a bit of power! But first start with a proper dyno!
B
-
- Monster Truck
- Posts: 7249
- Joined: Fri Oct 12, 2007 2:38 pm
- Town: Cape Town
- Vehicle: Honda Jazz
- Real Name: Bretton
- Location: Brackenfell
Re: Fitting an AFR Gauge and Lambda Sensor to an SFA
Richard, one more question from me... how do you know that the AFR gauge and lambda sensor are calibrated to work together? Are the specs for all Lambda sensors and AFR gauges the same, or do you need to match the gauge with a specific sensor, or vise-versa??
Now the next thing you need to do is fit a POT to the Dicktator and activate the AFR compensation on the Dicktator, that way you will be able to fine tune your air-fuel ratio on the fly! You can also set how fine/rough this POT adjusts...
If it turns out to be really beneficially I may consider fitting one of these myself!
B
Now the next thing you need to do is fit a POT to the Dicktator and activate the AFR compensation on the Dicktator, that way you will be able to fine tune your air-fuel ratio on the fly! You can also set how fine/rough this POT adjusts...
If it turns out to be really beneficially I may consider fitting one of these myself!
B
-
- Monster Truck
- Posts: 5906
- Joined: Fri May 18, 2007 7:12 pm
- Town: Pretoria
- Vehicle: '96 D/C Raider
- Real Name: Bennie
- Location: Doornpoort
Re: Fitting an AFR Gauge and Lambda Sensor to an SFA
No please dont. If it was properly dynoed use the AFR only for info purpuses do not scratch where it does not itch..snipes wrote: Now the next thing you need to do is fit a POT to the Dicktator and activate the AFR compensation on the Dicktator, that way you will be able to fine tune your air-fuel ratio on the fly! You can also set how fine/rough this POT adjusts...
B
BTW Bretton you do not always have to achieve a stoichiometric mixture (14.7) at idling, your engine may run better at leaner or richer values depending on its state (age / modifications and the ambient air density etc.) The name of the game is not fuel efficiency rather effective effort. Give the engine what she needs to calm her down rather then to worry about AFR. Unplug the ICV and play with the mixture values upand down and see at what value the RPM drops when going richer as well as leaner and find a spot in the middle of those 2 values as the perfect spot. Redo the test once or twice at different atmosphric conditions ( note your previous values) and find the best all round spot. Effective effort is an average value that works well under all conditions rather the being at optimal AFR all the time
What you rather need though is once an engine is cruising (finished accelerating and settling down) is to achieve as close as possible to 14.7 at your normal average driving speeds or at light throttle (low load) she can actually run way lean and and hard acceleration and high RPMs you want her rich again as fuel cools down the engine. You do not want a lean mixture at 3/4 throttle at 4500rpm (except if you are not fond of your head gasket )
Rich You missed a spot when welding the nut in place
Re: Fitting an AFR Gauge and Lambda Sensor to an SFA
Hey Bennie, my mate no longer owns the fitment centre so I was sweating Big Time hey - it's "been a while" since I studied at tech nê :shifty:BenHur wrote:No please don't. If it was properly dynoed use the AFR only for info purposes do not scratch where it does not itch..snipes wrote: Now the next thing you need to do is fit a POT to the Dicktator and activate the AFR compensation on the Dicktator, that way you will be able to fine tune your air-fuel ratio on the fly! You can also set how fine/rough this POT adjusts...
B
BTW Bretton you do not always have to achieve a stoichiometric mixture (14.7) at idling, your engine may run better at leaner or richer values depending on its state (age / modifications and the ambient air density etc.) The name of the game is not fuel efficiency rather effective effort. Give the engine what she needs to calm her down rather then to worry about AFR. Unplug the ICV and play with the mixture values up and down and see at what value the RPM drops when going richer as well as leaner and find a spot in the middle of those 2 values as the perfect spot. Redo the test once or twice at different atmospheric conditions ( note your previous values) and find the best all round spot. Effective effort is an average value that works well under all conditions rather the being at optimal AFR all the time
What you rather need though is once an engine is cruising (finished accelerating and settling down) is to achieve as close as possible to 14.7 at your normal average driving speeds or at light throttle (low load) she can actually run way lean and and hard acceleration and high RPMs you want her rich again as fuel cools down the engine. You do not want a lean mixture at 3/4 throttle at 4500rpm (except if you are not fond of your head gasket )
Rich You missed a spot when welding the nut in place
I can give some good feedback nou Manne:
Most Importantly:
An AFR Gauge is purely for "Intel Only" Manne, no way could you try and tune with it, it's a second or two slow to re-act to throttle changes.
I'm only considering fitting a Pot for Altitude Correction with my "Big Africa Trip" approaching enol :roll:
1. Dadz tends to run "just rich" most of the time; on the highway this weekend the gauge was showing on the last bar or two of "Optimum" at 3500RPM+
2. At Urban speeds she runs in the early bars of "Rich"
3. Crawling is well into the "Rich"
4. AFR Gauge misreads if plugs foul-up/stop start-cold start scenario, comes right after a quick cruise.
I bought a Single Wire Lambda that means that it creates an Output only, multi-wire Lambda's have heaters which bring them up to temp faster and regulate temp, only necessary for Lambda's that talk to Engine Management Systems. My Lambda takes 3 minutes or so from cold engine start to send an Output. :Geek:
Bretton - Lamba's and AFR's need no calibration it's dependant on the Lamda's Output Voltage Range :Geek:
-
- Monster Truck
- Posts: 5906
- Joined: Fri May 18, 2007 7:12 pm
- Town: Pretoria
- Vehicle: '96 D/C Raider
- Real Name: Bennie
- Location: Doornpoort
Re: Fitting an AFR Gauge and Lambda Sensor to an SFA
I was pulling your leg but I sure made you look didn't I ?
Re: Fitting an AFR Gauge and Lambda Sensor to an SFA
BenHur wrote:I was pulling your leg but I sure made you look didn't I ?
Have stared, felt, listened (sweated) for leaks since taking the plunge the other day.....
all the time I couldnt help thinking about a very naughty joke with the punch line -Am not really a welder Sir :!: :!: -
- Dadz Toy
- Low Range 4WD
- Posts: 243
- Joined: Sat May 14, 2016 2:45 pm
- Town: Cape Town
- Vehicle: 95 Series Prado - Diesel Dog
- Real Name: Richard
- Club VHF Licence: HC 286
Re: Fitting an AFR Gauge and Lambda Sensor to an SFA
Almost 7 yrs to the date I have finally fitted a POT to my Dicktator.
I'm chose the range of -12% to +12% from the Dicktators menu.
I'll feed back after we do a long run the Coopers Tire Night Challenge.
Rich
I'm chose the range of -12% to +12% from the Dicktators menu.
I'll feed back after we do a long run the Coopers Tire Night Challenge.
Rich
Rich