So I just installed a TBE...

[SarcasticOne]

WOT = wide open throttle, aka foot flat to the floor
and yes, these cars naturally run a bit rich

[rayd]

Heh, thanks dude,

Nah I opted bigger top mount to keep turbo lag down, and the lag is still amazing lol
Get that thing a proper down pipe tho, not sure if you saw it but the 1st cat at the back of the turbo is mega restricting

Cheers to everyone for the replies, especially Nuliaj. Very helpful! Yes I kept the O2 sensors and yes down to 1 cat. If there's unburnt fuel passing through, does that mean the engine's running rich? Sorry if this is a noob question lol. I've mainly experienced it during low rpm downshifts, which makes sense based on your explanation. Also, what does WOT stand for?

Hey rayd, yeah that was me haha. Small world! It was a pretty big turbo ay... big gains? Have you considered putting a front mount in there? Btw nice choice of colour :P