to redirect the exhaust flow from the original flow to shorter exhaust flow.
So , like using straight piping without muffler la after the valve open coz the air will go through the new hole.
I'm planning to buy a R34 GTR.
However, I need to do a research about R34 GTR prices as well as monthly payments.
If you guys dont mind sharing, how much roughly do u pay for monthly installments?
Need some...