is it 2 small tell me the truth

[88B18aHB]

I have an 88hb with a b18a in it custom axel back exhaust the pipe is 2".Also have exhaust manifold an down pipe from a b16. But the mid pipe is stock (88 dx) that mid pipe is killing the exhaust flow right?

What is a good size to replace it with i was thinking 2' or 2 an a quater

[jeef]

well if the axel back is 2, there is no point in goin any bigger than that.... you can't flow any more gases than the smalles diameter will permit through

[spy54]

5" yo! lol naw 2 shound do you b/c as said before flow will only go at the smallest pace but you could do it based on the laws that by forcing more air into a smaller space are in effect creating more pressure thats how irragation systems work, you go from a 3" pipe to a 2" pipe and you get more pressure b/c it's so much into a smaller space.