cat convertor on backwards??

[rob_rob]

i have a twin system on my vs v8 ute and 1 cat the shop has put on backwards like the flow arrow points to wards the engine. both cats are stock holden cats no aftermarket 1's.
1 is the right way and the other is the wrong way around...
will this affect anything???
im guessing there is a reason thats it has a flow arrow

[Brett_jjj]

Mate I think it wouldnt be very good for the gas flow,The arrow wouldnt be there for nothing.Id get them to fix it,Unless someone here knows more about it,and says it doesn't really matter. Someone here should be able to say for sure.