So last weekend I got my car into the shop and finished making my header and mid pipe. It came out pretty well I think. I used tig to stich together the whole thing together so it was good practise for me. It def gave my car a good amount of power throught the rpm range and faster revving towards the top. It sounds and smells like a race car to. Its a little loud at the moment but I have some leaks to deal with. All the mild steel piping and the flange cost about $130 not counting the tap to make the bung for the O2. Plus I have a ton of pipe left so I am making some slip on shorty side pipes to keep things short and true duals if i want. I am also making a cai with the leftovers. I had a couple questions though. What should I do with the air pipe that leads to the cat? I plan on running a cat in the future so I dont want to completely remove it but should it be capped? I am not worried about 6th port function because I already tied them open until I make a better way to actuate them.

 

not bad..... although you can pick up a new pacesetter header for $100! and as for the air pipe.....just take it off of the intake manifold, and block off the hole on the intake...... you COULD just leave it open, but since you seem to be a craftsman, making a block off should be easy work

 

Yeah but header AND midpipe plus the pacesetter doesn't stay dualed out. The collector slips onto the end of the header so like I said when I make my side pipes each rotor will have have its own exit to the atmosphere.

 

aaahhhh..... a "true-dual" setup.....nice