40 Series or 40 Series Delta Flow?

[Explorer X]

I was going to buy a Flowmaster 40 series muffler, but which is better? The regular 40 series or the delta flow? What is the difference besides the sound?

 

[jimbo74]

performance wise... about the same.... noise wise, the 40 is way louder......

 

[EliteConcept]

the delta series will be some what quiter than the Non-delta series, i had a non-delta, it was kinda annyoingly loud inside at times

 

[snocross1985]

I got a non-delta 40 and i love it! Not annoying to me at all, but i also love loud exhaust so this is good for me but maybe to loud for you depnding on your preferences.