why i think you should get headers
 

The exhaust manifolds has a port size of 1.5" and then there is a weld inside that holds the flange on. That weld is almost 1/8" that drops your exhaust gases trying to get out a hole of 1.25". The V8 exhaust manifold isn't much better at 1.75" but the weld is very small. Here are some pictures of my V8 exhaust manifolds after clean up.,,,,,had the hardest time loading pictures.
https://cimg1.ibsrv.net/gimg/www.cro...87dce92a58.jpg

Re: why i think you should get headers
 

Can we keep the cats with headers though?

Re: why i think you should get headers
 

Yes and or switch to high performance cats.

Re: why i think you should get headers
 

https://cimg6.ibsrv.net/gimg/www.cro...6363250a11.jpg
didn't know this did you?
https://cimg0.ibsrv.net/gimg/www.cro...bd12adb46f.jpg
see stock and headers

Re: why i think you should get headers
 

Seeing that just makes me unhappy!

Re: why i think you should get headers
 

Has anyone installed and dyne tested the Needswings headers? I am interested in them, but am a bit frustrated that no one has shared their installation/test/results experience with the headers yet that I can see. Maybe I missed it?

Re: why i think you should get headers
 

I'm more interested in the NeedsWings Cat Delete Downpipes solely to get rid of all that heat. I don't want noise though. Might have to 'muffler' that away. Not on the top of my list though so I haven't looked into it yet.