midbox is just an empty metal tabung,since it has a higher volume,the exhaust gas gets slowed down..the best setup will be to keep the velocity of the exhaust gas high so it can exit the engine without restrictions and the fastest possible way..i dont understand why people say backpressure is necessary..i think the best setup will be a straight pipe from the extractor till the end but this is bloody hell loud hence the need for muffler and bullets..

This post has been edited by ryan_hustler: Apr 24 2008, 11:12 AM