Flowmasters
 

Could someone tell me the difference between the 40 series and the 40 series with Delta flow? I understand the Delta flows reduce the noise inside, but does this reduce the power it makes? Thanks AJ

Nope, Flowmaster says that it still delivers the same amount a power incress.

isn't delta flow a powder coated muffler?

No the are not powder coated. Delta flow is referring to the fact that the internal baffles are delta shaped. That is they are triangle shaped.

50 series delta flow

Hope this helps.

Mike