if so, how?

 

Stick a wideband sensor up it mate.

But lean on a N/A car isnt quite the same as on a turbo car, very common for a turbo car to be running in the 12s or even 11s but N/A tend not to drop that low even when accelerating.

 

exactly same way you do with a turbo motor

 

with a lambda sensor or other exhaust gas analyser

the colour of the plugs or exhaust pipe can give you a clue, but that is a combination of mixture and ignition timing so you have to know what you're looking at. also depends on the last running condition.

 

thats a point, you can plug chop a N/A car... you wouldnt dare do that on a turbo motor

 

my n/a car has 2 lambda sensors already (its a V6).

i guess i couldnt take any readings from these?

 

You wont get anything very useful out of the narrow band sensors.

 

bummer..

and wideband stuff isnt cheap either

 

Where are you based?

If you are in the south of england i can probably pop round and give you a hand with it using my wideband setup?

 

Take it to someone with a wideband then!

Neil.

 

He lives in Hull Chip - the areshole of the North

Neil.

 

Fucking typical, about as far away as its posisble to get from me then!

 

I'd keep it that way too Chip - he smells vaguely of cod

Neil.

 

PMSL @ "vaguely of cod"

 

Aye chip, unfortunately i am in Hull, far too close to that geordie wannabe Neil S for comfort too

 

or use a gunson colourtune - a see through spark plug that allows you to see the combustion colour that indicates the mixture. bit tricking at speed though

 

depends if i can get a small person to fit under the bonnet LOL