Originally Posted by Jumper11

I got a 2002 LS1 six speed and am seriously considering installing headers. I don't know about 1 3/4 or 1 7/8 mean other than diameter. What tune do I need? Does the headers come with the EGR line coupling. (2 bolt air valve). I have an X pipe ready to install and wanted to do it all at the same time.

Originally Posted by TheDEfan

It was easier than I thought is was going to be on my 98. The biggest PITA was swapping out the RH air tube that runs behind the intake. That's not going to an issue on my 01.

Originally Posted by King Lear

I thought about getting rid of the a.i.r. all together and just blocking the air fitting on the tube. Kooks recommends not doing that as as it will break off. Really I don't think I would notice any HP difference by removing it anyway.

Originally Posted by TheDEfan

No you won't. It's an electric air pump.