ive just recently got a iaw programme off motorsport developments and ive got a lm2 afr guage. I got the ratio to around 14.5 -15.0 on idle and its about the same on cruise maybe more 15.0 but when i boot the car insttead of heading down towards 11s-12s it goes up to about 17 what would cause this its doing my head in now?

 

are you useing the innovate exaust bung? or have you screwed the senser into the exaust??

 

also what car is it??

 

its the sensor that you shove up the tail pipe and its a s2 turbo with cosworth level 8 ecu.

 

what??? have you just pushed the sensor in the exaust?? it needs to be mounted in the flow of exaust gases! not just pushed in lol

 

also to add ive found that the innovate exaust bung seems to be a bit shit lol. i would only trust mounting the sensor in the down pipe...

 

its just a hand held gauge mate not a dash mounted one it says in the instructions that you can push it up the tail pipe

 

well mate i have my lm-2 sitting in frount of me can you tell me where it says shove the sensor up the exaust it dosent matter weather its dash mounted or hand held he sensor is EXATLY the same as i have a dash mounted one as well. i think you need to learn how to use you equipment first imho..

 

it says it in the instructions that are on disc.
I might try welding a bung in the exhaust and see if it shows different results

 

hear ya go hear is what the exaust bung looks like





the sensor screws into it and that the holds the sensor in the flow of exaust gases if it was flaping around in the exaust you will get a siiiiiite reading. ive found the exaust bung is shit with "big" tail pipes it will only give a good reading when the gases are flowing quick ie WOT ect ect i think air tends to waft into the tain pipe giving falce reading's i would defantly weld the bung into the down pipe (about 2 feet from the turbo) and see what happens then

 

ok mate i will try that

 

You werent seriously just pushing the sensor up the tailpipe ??

That sort of shit starts epic threads.

 

true but its not his fault realy if thats what it said in the instructions then i can see why.......but tbh i cant see where it says it

 

Yeah mate i was but its all just learning, this is the first time ive done anything like this thats why i post on here to ask what im doing wrong and get advise off people.

 

ive seen this sensor used on mapping rolling road cars first i would try putting it somewere in the front of the exhaust and if she's still saying 17's etc then she's running lean carefull of you might melt a piston i run a lm-1 and thats spot on

 

hang about, you pushed it up the exhaust and then put your foot down, how the heck did it not blow out the exhaust!! were you letting it bounce around in the backbox

 

Did it not melt the wire?

 

Epic!

At least you know for the future now...

and thanks for the laugh.