Hey guys, I'm borrowing/renting a PLM from a friend for a few days to tune my b18a-turbo setup in my crx. I'm using a zdyne and 450cc injectors for the management. When I got the PLM all hooked up, it never seems to give a steady reading. I know it's probably normal for the a/f ratio to fluxuate a little bit, but a sample reading at idle goes something like (--,.45,.25,--,.09,.75,--,--,--) each of those displayed for maybe .2 seconds, just extremely jumpy and non-linear seeming. Same deal under crusing/acceleration, pretty much any fueling condition. But if I let off the throttle (basically engine braking-no fuel being injected), it seems to properly read that things are extremely lean (anywhere from 2-12 or so). It's set in lambda mode currently (1=14.7), just wondering if anyone else has had this type of problem before?

Thanks for any help,

Ryan P.

 

Anyone with Motec experience please help. Thanks!