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Discussion Starter #1
ok, so when you get the ZX3 system you have to add about 6" to it for it to fit a sedan, right?

Where do you add it?
under the body of the car like before the muffler?
or is it in one of the bends after the muffler or right before the tip?

this is for research pusrposes to help us SPI folks out a bit.
 

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The extra length is between the flex and the muffler, which is a completely straight pipe.
 

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Don't know too many people who try to modify the exhaust. Usually you simply buy the verson for the sedan. But yes newb is right, it's the straight pipe from the flex to the muffler.
 

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He wants to re-locate a cat to the section after the flex (to put in a header and stay legal) and since he will be chopping the straight tube anyway, the hatch system is a little cheaper......

More reading in what I affectionately call the SPI header quest:

http://focusfanatics.com/forum/showthread.php?s=&threadid=93157
 
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