Can anyone tell me how I can test the rich/lean mixture to see if I have it set right? Seems to be smelling a bit (and I really am going through petrol! - yes I KNOW! Who Isn't!)

 

I'm told I can buy a dial to show the mix real time, but is there an easier way?

Nige I just bought a pair of these fitting them next week;)

 

 

http://www.autometer.com/hp/2003_catalog/street_performance/street_performance_art/5775.html

Probably do my head in watching them light up:rolleyes:

 

Nige, if you don't want to go down the road of having another gauge, i use a gadget from Lumention, Demon tweeks advertise em. It's a very small black box about 6cmx2.5cm and has a series of 9 small LED lights, Red, orange and of course Green, simply sticks to the underside of the dash or where ever and easy to wire in, think it cost about 60 quid, been in for nearly 2 years now and works a treat, infact ever since me last rebuild :D

cheers

smithy

Hi Macca,

 

Must admit, I have seen the AFM in Wazzas car and it did my eyes in after a couple of mins, maybe see if you can fit a switch to them, just switch it on when you want to cane it!!!:eek:

How easy do these wire up?

 

Cheers

 

Vijay

Originally posted by MAC 1

Probably do my head in watching them light up:rolleyes:

 

Cerina has something similar to this in her car, next to the AFR. Just seems to go up and down all the time. Fook knows what it's doing LMAO !!!

Vijay, piece of piss to wire up, though i did ask Ian at Hiteq which wires to connect too :D mines positioned just below the left hand cluster (wipers) can just see it out the corner of me eye cos really once you use it to set things up, that's it really.

Reason the lights on many seem to dance around is simply our ECU being closed loop to around 2.5k revs, all mannner of lights come on, on boost though, just 2 nice steady green ones ;)

smithy

Originally posted by TopLess

Hi Macca,

 

Must admit, I have seen the AFM in Wazzas car and it did my eyes in after a couple of mins, maybe see if you can fit a switch to them, just switch it on when you want to cane it!!!:eek:

 

Think I will just wire the feed supply to a switch;)

Are they hard to set up correctly? Does this require specialist help? Do they calibrate themselves?

 

AND

 

How do I know what the readout is telling me?

 

Oh yes. And why do you have to have two MAC? I can't imagine a dial getting lonely inside your car!:D

Originally posted by NigelBoyd

Are they hard to set up correctly? Does this require specialist help? Do they calibrate themselves?

 

AND

 

How do I know what the readout is telling me?

 

Oh yes. And why do you have to have two MAC? I can't imagine a dial getting lonely inside your car!:D

 

Yep they do it all themselves, no specialist help needed and finally usually they have a serious of lights, the instructions tell you excatly what colour lights mean what, though in most cases green is the end colour for richness, i have 3 green lights, first one being just about right, second running a tad rich and 3rd very rich, i tend to make sure it's always on the second light when on boost.

smithy

The autometer gauges are too narrow banded to tell you usefully if you are running too rich or lean (or if it does read it's still too lean) on full boost. They are adequte for analysing idle, cruise and off boost mix though.

Well actually it's not the gauge, it's the stock lambda sensor that's the issue, they are only there to adjust cruise mixture, not analyse on boost mixture.

 

You need a wide band lambda sensor set up to be sure.

This is a fecking good gadget...

http://lagunamiata.home.att.net/lm-1.htm

has loads of cool features, such as narrow band emulation (for the ECU signal) and also has an output that enables you to connect it to the automater gauge such that it reads in wide band mode.

 

Looking at around £300

I am currently using a very sophisticated detector - my nose!

I am told that the smell of my car on idle is a sure indicator that the mixture is too rich. Do I really need a gauge to get it right? Would a decent tuning specialist be able to sort this out?

(I wasn't planning on spending £300 on a super duper lambda sensor and the cost of a gauge on top!

In that case Nige, what i got and what Macca's getting means diddly squat for you due to the ECU's closed loop system, what we have both got and does the trick is the HKS Super AFR whereby we can adjust the mixture at Idle, i assume there is ways within the engine of doing the same, maybe the Likes of Duffers is the man to ask or Jeff TT.

smithy