quick exhaust question

[baynton1991]

alryt lads ive got and 03 172. where the cat joins to the centre section the two flanges are joined together by 2 bolts. it was sagging a bit so i checked the bolts and they were a bit loose so i tightened them up but should there be a clamp over the join aswell as the 2 bolts already holding it together. the only reason I ask is because i have seen a few pics on here an it seems that every car on here seems to have their cat joined to the centre section in a different way.
cheers in advance

 

[clancy]

if there bolted then i think not mate, should be a tight seal

normally if there just two flanged tips then they have a clamp to hold them together

 

[Kam.]

no clamp is needed

 

[baynton1991]

Cheers for the replies