[Mr 5 0]

You should be seeing at least half-second better et's (low 14's).

I would also guess that the chip may be hurting performance, as they sometimes do.

The other mods you list are fairly minor but they shouldn't slow you down, although you don't need the 65mm TB on a stock intake and the shorties may cut your torque a bit, you should get it back on the big end.

The other explanation would be how you drive it; launch and shifts, mainly, and those I can't comment on without seeing you race. If you shift much above 5200 RPM you're going to lose some power.