I have just brought butches old rwd sapphire.Its running t34, greys etc with a scorpian exhaust with the centre box removed.Now i dont find it to loud at all but i have a 2 year old and starting it up in the mornings is waking him up early each day. Wondered what the easyest way to quieten it down would be without affecting the performance? What is the reason for removing the centre box also? thanks in advance. jamie.