how big can i go

hey guys how's it going. anyways, i just wondering how big of piping and muffler can i go with, without losing to much back pressure.

[russ jerome]

At ten pounds of boost there is OVER twenty pounds
of backpressure in your exhaust manifold. There is no
way you can go too big, 2.5-3" is common for ez install.

[turbovanman]

Quote:

Originally posted by russ jerome At ten pounds of boost there is OVER twenty pounds of backpressure in your exhaust manifold. There is no way you can go too big, 2.5-3" is common for ez install.

Agreed!

[contraption22]

On turbo engines... backpressure is not a good thing.