Hi all,

I had a traul through the old "exhaust manifold" threads and can't find exactly what I'm looking for.

Since I swapped the turbo to a bigger unit I've developed a bit of a whistle when the exhaust is cold. I worked out there's a bit of a leak in the exhaust where the turbo mounts and assume this is my issue.

My question is;

Since I'm going to pull the whole lot off to fix it anyway is it worth swapping to a 1 piece exhaust manifold? Or just
Machine the old one? Pros and cons?

Also, if I just stick with the standard 2 piece is there going to be issues getting the two parts to seal once I pull them off and put them back on? I've never dickered with the 2 piece setups.