FPSaustralia
New Member

the reason being is it lets more air into the Engine and that means better porormance ...
some bad points --- The engine will idle a TINE bit more when the cluch is in and all you do is cover the whole with finger and it goes normal ... .
Some REAlly good points ... -- It makes it much better in porformance and if you want to slow down with out using brakes just cover holl


hope this helps