Drilled air box

[mab57]

I have a nubira estate 1.6SE and am trying to optimise performance (power). I changed to a K&N panel filter and Bosch super 4 spark plugs but with no real improvements. I am wondering if drilling my air box will have any effect. Has any one tried? I have not removed the air resonator. Also I am using optimax pertrol. Has anyone got any comments/obervations on which petrol is best for my car. Is my car doing the best it can do with 30-60 mph in 3rd at 9.5 sec.

[woo]

take the silencer off the airbox. I got real improvements by doing that and its free.

[Wolf-Spirit]

put a cone filter in the fender itself .. even better then removing resonator... you need to make a pipe then though

[asam]

Take a look at mine. Its an idea. I took off the pipe from the air box to the fender wall. Major improvement. Also plugging any and all resonator type boxes on the air line. I have been thinking or drilling the air box but with the two intake style air line i have not done it. also there have been many posts and all these ideas. I think one was performance in 5 or 10 min. i forget though. That was a big one with tons of info.

Alex