There is no way just turning your carb and facing it forward is going to make any difference. Even when using a foam type filter the air flow is going to deflect around the filter. Yes, I know some riders are doing it but that dosent mean that it works. A number of road bikes are using "ramair" type systems to increase power but have a good look at them. The air flow is fed by ducts into a sealed airbox and at high speed (most engineers say 200kmh +) a small positive air pressure is achieved. When this is conbined with a properly set up carb or efi system a small power increase is possible. Note the the speed required is far greater than any mini dirt bike is going to achieve, and I think it may be a bit difficult to fit the sealed airbox & the ducting! :lol:
I agree with the advice about using a bigger carb, and have a look at the intake to make sure that there is no steps to interupt the air flow. Ideally you want a slight taper leading from the carb to the intake port. One bike I worked on this week had a 24mm carb and intake but had an insulator between them with an 18mm bore. Just enlarging and cleaning this area made a big improvment to top end power. If your original pipe is overly restricted an aftermarket pipe will help but may not be worth the expence. You can open up your pipe to remove some (but not all) of the restriction. Use a unifilter, not so much for power but for the improvment in filtering compared to a paper one.
Sorry to discredit your post condog, but with 27 years of experence race preparing bikes I feel my points are valid.