I have to disagree with DAN 666 on this one. The biggest thing you can do with a N/A motor is to make it breath better. What docos have you seen that suggest filters and the likes wont help? The motor gets its power by the amount of cold air that flows into the motor. Depending on where it is sitting, will depend on how much of a benefit you will see.
Will it add more power to the motor? generally no, but it will free up alot of power. There lies the key, its freeing up what is available.
Just because you have been round the street a few times, doesnt mean you know everything. I think its in poor taste to jump onto someone's thread and tell em that they have wasted their time and money on something that you really dont understand where she is coming from. Would you tell someone with a ugly baby that the baby is ugly or would you bend the truth? Would you tell a girl that you wanted to bone that she was a dog in a certain outfit?
Cara the car is hot, no doubt about it. Is it a money pitt? arent all cars? how many cars actually make money when you spend money on them? Actually, how many skylines make people money when they go to sell them? It is really one's opinion against the others, im sure there are alot of people on here that spend alot of money on their N/A's.
Good Luck with the problem Cara, when you get it sorted, throw up some dyno sheets, id love to see the power that it makes.
Cheers,