wide band, narrow band and gauges.

[Alex1380]

if you have not guessed were talking lambda sensors. I'm supercharging my mini Which will still have a carb fueling the hole thing. I have been warned that if will need to run on the rich side to avoid melting pistons. I am thinking a lambda sensor would be a good idea. Gauges seem to be around £200 now that's not a lot compaired to another rebuild but there's not enough money left in the pot. Is there a more DIY solution out there?

Thanks

[rustingdeathtrap]

If you want to have any kind kind of control over your mixture you'll need a wideband sensor.
Innovate do a fairly resonable controler but you'll still be looking at around £200 notes for a complete set up.
There used to be a diy wideband controller you could buy in kit form like a megasquirt but i don't think its avaliable any more.

[deejay]

I happen to have a wideband setup for sale if you're int'rested.

It's a Tech-edge one but i can't remember what model...

[Alex1380]

Pm sent.

How makes the black box ones with the LEDs running across with the weak one side and rich the other they can't be £200?? Or is that a narrow band set up?

[kabman]

That's just a narrow band sensor. You can make one yourself using a scrap oxygen sensor and a little LCD display you can buy from Maplins for less than a tenner. But it will only tell you if there is or isn't excess oxygen in the exhaust gas - that is, if the lambda is higher or lower than 1. A wide band sensor will tell you how exactly how much higher or lower than 1 it is.

[cobblers]

Nov 17, 2008 7:43:40 GMT Alex1380 said:

Pm sent.

How makes the black box ones with the LEDs running across with the weak one side and rich the other they can't be £200?? Or is that a narrow band set up?

The simple ones are the narrow band kits, but they are essentially useless for tuning a car.

Wideband controllers are a lot more complex - Innovate do one and I think it's worth spending the money (£150/200) to get something you can rely on to be giving you correct values.
There is a DIY wideband controller kit on the market somewhere, but by the time you've bought the sensor itself (Cheapest I could find one was £65) and spend £50 on the kit, you aren't a world away from just buying an LM-1 kit that you know will Just Work.

[hongkongphooey]

AEM do a good one too...

shop.ebay.co.uk/?_from=R40&_trksid=m38.l1313&_nkw=aem+wideband&_sacat=See-All-Categories

[ChrisT]

Nov 16, 2008 23:14:53 GMT deejay said:

I happen to have a wideband setup for sale if you're int'rested.
It's a Tech-edge one but I can't remember what model...

I'm using a Tech-Edge 2J1 controller (bought from Trigger-Wheels)with a Vei Systems AFR gauge on my SX.

Quite a cheap set-up but works well - readings were spot on when compared to those taken when it was on a rolling road.

[joda]

WOULD this technology work with a 2 stroke?

eg- tuned vespa engine?

[cobblers]

Nov 17, 2008 16:11:14 GMT joda said:

WOULD this technology work with a 2 stroke?

eg- tuned vespa engine?

I wouldn't imagine so - The exhaust of a 2 stroke is so dirty that sensors would be fouled in no time.

[Brigsy]

I use the Innovate lm-1 wideband. Best £200 i ever spent. as everybody else has said, steer clear of the narrowband s***e.