I haven' t install my turbo yet, my kit comes with a 2.5" downpipe and I already have a 2.5" muffler I bought before I had my kit.
Wasn' t sure I was going to boost my car
I would like to know if it worth getting a 3" muffler and make a transition to 3" from the flexpipe to muffler instead of going 2.5" all the way ?
I know bigger is better but will making a transition after the downpipe be noticeable and worth getting a 3" muffler ?

 

depends how much power your looking to make...but if your gonna be running on low boost then 2.5 is fine...but if you havent bought and exhaust yet, go with the 3"