SPARKY WRX

Hi,

When I was at Well Lane on sunday I was slightly worried about my Air/Fuel Ratio readings from my dawes AFR since I had decat downpipe. It was suspected that the fuel pump wasnt supplying enough fuel at the top end. It was begining to reading lean on full boost after a few hard blasts.

any way, on the way home I planted my foot and the dawes AFR (which has four lights red, yellow, green, blue from lean to rich) went green, then at the same time I switched my lights on!!! The readings from my dawes went to red (lean) and when I switched them off it went back to rich!!!

Very confusing !!!

Any sort of electrical load seams to affect my readings, weather it be the lights, fans or climate controll. Could it be affecting my fueling via a problem with the battery or is it just electrical interferance.

Has anyone experiance the same problems?


cheers

Mark Shield

NotoriousREV

Must be an earthing problem as your reading very small changes in voltage. Where does your Knocklink earth to? I beleive it should earth directly to the battery, but I could be wrong.

SPARKY WRX

Iv reposted this in the drivetrain, where there is a bit more info

Yes I have it direct to the batery but through some thick gauge wire

Cheers

Mark

Omen

Sure i read a post the other day on something similar and this was due to an earthing problem.