1st... u must register with imaging hosting.. as www.photobucket.com
then upload ur picture there like u upload in the email... then u copy the or [img] or [tag] i also forgot la... can help u better to make u active in ZTH...
Scenario 1: 2.5" from downpipe to straight flow muffler
Scenario 2: 2.5" from downpipe to straight centre box (also a silencer) to straight flow muffler
Scenario 3: 2.5" from downpipe to s-flow...