last week i dyno my ej9.
it has the d16z6 IM swap with it's intake airbox, a kn filter, 4.2.1 exausth headers, 45mm inner diameter straight exausth without cat, a mid magnaflow supressor and a final magnaflow muffler.
recently i changed the o2 sensor because o think the car was running a bit rich and having bad mpg
the car has 120.000kms.
heres my dyno:

lots of cars tested that day,
what do you guy think?