21-10-2013, 09:45 PM
Im new to the diesel and hdi tuning world, il drag out a smallish middle box from the scrap at work n weld it in at the back, someone i work with told me they ground angled slits in his tail pipe and slotted and welded in steel plates to disrupt the flow. Not sure how true this is or what effect it would actualy have? Anyone come across this before?