Can someone please have a look at this Dyno sheet from the weekend for my Foz and explain what the AFR line means . Many Thanks

 

I am sure people with more expertise will be on soon. But that does look good but might be a bit rich which is safer, normally as the load on the engine increases (boost goes up) then more fuel is added that is why the fraph dips like it does. If you have a graph showing boost the dip in AFR should be close to where the boost rises. Here's what mine was like last time on the rollers;

http://i41.photobucket.com/albums/e2...erfplotAFR.jpg

Good luck m8

 

Cheers - so the lower the number the richer the fuelling ?

Main reason for asking is I was about 10bhp down on the last time it was on the rollers, no changes to the car. The guy at the RR said it was running richer at the top end than before. Out of interest what would cause that to happen ?

Glad it's on the safer side though....means I can go ahead with a few little tweaks I have in mind and squeeze a bit more out

Thanks again - anymore help much appreciated..

Pete