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Aside from B&B headers that bolt up to your OE mid-pipe (only brand that will bolt up), you'll need the "x-pipe" to bolt up every other brand of headers to your axle back mufflers.
C6 Z06 and ZR1 mid pipes are 3", and '06-'10 C6 Z06 came with H pipe, 2011+ came with X-pipe...but the '12/'13 models have the extra 2 cats attached before the X. '09-'13 C6 ZR1 came with X pipe, but again the '12/13' models have the 2 extra cats. No idea on Base/GS for H versus X, but pipe diameter is 2.5" for all years.
If you install a set of long-tube headers, what are you going to put between your new headers and your mufflers?
Headers are much longer in total length than the stock exhaust manifolds that you just removed ... So, you are going to need a set of intermediate pipes (aka: x-pipe) that are much shorter than the stock intermediate pipes you need to remove.
Cutting your stock intermediate pipes shorter won't work because they won't line up correctly to your mufflers once the headers are installed.
So, you have no choice ... You get a set of headers with the intermediate pipe (x-pipe) that is made to fit that particular brand of headers .... Or you just forget the whole thing and leave your stock exhaust system alone.
If you install a set of long-tube headers, what are you going to put between your new headers and your mufflers?
Headers are much longer in total length than the stock exhaust manifolds that you just removed ... So, you are going to need a set of intermediate pipes (aka: x-pipe) that are much shorter than the stock intermediate pipes you need to remove.
Cutting your stock intermediate pipes shorter won't work because they won't line up correctly to your mufflers once the headers are installed.
So, you have no choice ... You get a set of headers with the intermediate pipe (x-pipe) that is made to fit that particular brand of headers .... Or you just forget the whole thing and leave your stock exhaust system alone.
Now, see how easy that was ...
Great info, thanks. Didn't know aftermarket headers were longer!
The term headers is the same as exhaust manifold? Seems so!
So, you have no choice ... You get a set of headers with the intermediate pipe (x-pipe) that is made to fit that particular brand of headers .... Or you just forget the whole thing and leave your stock exhaust system alone.
Now, see how easy that was ...
You do have one other choice as mentioned earlier. You can get the Billy Boat long tubes that bolt up to your factory xpipe.
I didn't know that Billy Boat even made headers. I thought they only made mufflers .... thanks for the info
I didn't know it either. Then I bought a used set from a member here and thought I got ripped off when he didn't send an xpipe. To my surprise it bolted right up.