I can tell you guys right now that the air fuels are not accurate. The shops dyno wideband took a shit early in the day. That is a static reading and not representative of the car, at all. JWT is good for air fuels.
If you have a JWT ECU that is for a VE, it is not the a/f ratios.
How did those exhaust hangers treat you?
I know the chain tensioner was changed yesterday, what was wrong with your other one?
edit: I see it was cracked, that will do it.