Quote Originally Posted by yomomspimp06 View Post
I thought the intake manifold having the larger ports was only for the N/A....learn something new everyday. Everything said is very true except for I've never really heard of problems with the rear iron cracking under high HP conditions...Guess I need to start doing my own research.
When you get ready to do the swap I'll lend a hand too
this is what happens when you abuse an s4 engine. is the dowel pin right at the oil filter pedestal. the s5 turbo engine has thicker material around this area.


the intake ports are the same, the runners and the runner diameter for the intake manifold is different.