Finally managed to get my 803s, 3BAR & Bozian chip installed in the track Quadra this weekend - idle is showing as roughly 17 AFR, cruising is approx 16AFR & on boost is 11.8 - 12.2 - now very occasionally the LM1 is showing 20 AFR on boost but its that quick that if you blink you'd miss it must be a matter of milliseconds before its back on track again and it seems to be when you simply go over a bump in the road - connections are all ok to fuel pump etc, nothing obvious hanging off - there was 4 gallons of fuel so I doubt it was surge anyway, plus I was travelling in a straight line!!!

Any ideas???

On the upside she doesnt half seem to go well........all ready for my 3 day track time in France this coming weekend!!!

 

you got a miss-fire?

 

No misfire Gareth.....or not one that I can feel anyway - running Grp A cossie coil & 071c plugs - surely this would show up as too rich as the mixture wouldnt be getting ignited properly???

 

so this has just started since the upgrade?
can you log with ur lm1 so you see at wat rpm snd psi its doing it to see if it happens at the same point.

 

they are oxygen sensors

 

Yes....they are you are right!!! LOL! Daft bastard!!!

Jay - havent got the Rev module yet for the LM1 - on my list to purchase!

 

ah right as ive been here before thinking it was every time it was a bump in the road but found it wasnt mine was a wiring fault