i've got an egt probe in each header so would be able to trim my fuelling that way (if i had management capable of it). obviously could do it by swapping injectors about, but don't have access to a large stock of 803's to select from.

was wondering about separate ports for the wb lambda too, but was also thinking of taking out a small sample from each header with a small bore stainless steel tube from fittings on the manifold and passing it through a chamber with the wb in it and then out to atmosphere. i guess it would work if the chamber was basically open to atmosphere at the outlet so didn't pressurise and affect the sensor? any ideas on this?