I feel the same below, 4 its gutless.
The veccie airbox mod seems good, have a search loads of posts on it seems simple to do.
Supposidly 68mm throttle body off the 2.4s are ment to help, needs to be imported from the states, check ebay.
Courtney and Regal are good places to start.
Quick question whilist on the subject, does a re-map help?
Was going to put on veccie air pipe, K&N filter (or courtney), remove pre cat and cat back.
Would it be worth mapping after this?