How much louder are regular FLOWMASTERS compared to DELTA FLOW Flowmasters?
 

I have a guy selling me some 42543's and he said once they are all sold out only the Delta Flows will be available - the 942543's

anything with a 9 in front of it is supposed to be Delta Flows.


also, which one is better?

Get the Delta flows. They move the evil resonance to around 3,000rpms instead of 2,000. I'd love to have no resonance on the freeway.

Rebel79 has the delta flows and his car sounds awesome. Maybe he'll post some video clips.;)