i have delta flow 2chamber flowmasters and i was wanting to know if the american thunder 2chamber mufflers were louder and if so is it worth replacing the deltas with the american thunder.

 

just replace the flowmasters and get something else....flowmasters sucks hands down

 

Agreed!

 

i guess your talking about american thunder cat back or either the mufflers they use for the american thunder cat back. they are the same. they are 2 chamber delta flows. so theres no point in changing your mufflers unless there broke.