Not sure if this would be the correct place for this but.

tryin to plan ahead, b18b ebay turbo kit wit a 2.5" downpipe not sure on how to do the exhaust, going to do 2.5" piping with a vibrant muffler just unaware how loud it will be staright to the muffler, dont want it too loud but decent tone. not sure if i should get resonators or a cat ?

 

Turbo cars are usually pretty quiet as it is. Especially with a 2.5 inch exhaust. If you have a 2.5 inch setup and a muffler it wont be that loud.

 

even if its straight pipe ?

 

a turbo in most states are classified as a "muffler".

straight pipe, vibrant resonator, then a vibrant muffler and it would sound good

 

would vibrant ultra quiet resonator be good or just the vibrant 18" long resonator