2.0 zetec black top

[baz-r]

Originally Posted by Big Vern

Unless you use something from one of the major aftermarket engine management systems, like emerald, then you'll not have a tune that will work with a catalyst as the engine management needs to update (adapt) as you drive. Megasquirt can't do this so it's not suited to a cat system.
BV.

since when?
megasquirt will run a lambda or wideband and can be setup to run a cat.

any of the after market systems have to be setup/tuned to suit
so what ever make you go for it need calibrating by your self or paying some one in the know

it is also worth noting that cat test are only carried out on idle and light load (reving with no load)
most std manigment systems only run closed loop at idle up to cruse not under load