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Just installed my 2.25" X-pipe and magnaflow dual in/out center muffler yesterday. I also kept the V-pipes. I was planning on ditching the V-pipes, but when my exhaust guy cut off the V-resonator and I measured the interior diameter of the V-pipes and compared with the X-pipes and center muffler, they seemed almost identical to me...For some reason, I thought the V-pipes were 2.5" in diameter??? Well, the difference in the interior diameter was definitely less than .25" (was about 2mm, if even). Anyway, the drone I expereinced at cruise is significantly reduced, interior noise is down. I still have a low deep sound, and my CTS is pulling ass....No scientific data here, but I definitely feel a difference in the way I am pinned against the car seat when I punch it...Now I can't wait to install the headers...I took some pics with my new Motorola Razr phone, but I am still figuring out how to upload pics from the phone etc......will post when I have this cell phone figured out...
 

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pjohnesq said:
Just installed my 2.25" X-pipe and magnaflow dual in/out center muffler yesterday. I also kept the V-pipes. I was planning on ditching the V-pipes, but when my exhaust guy cut off the V-resonator and I measured the interior diameter of the V-pipes and compared with the X-pipes and center muffler, they seemed almost identical to me...For some reason, I thought the V-pipes were 2.5" in diameter??? Well, the difference in the interior diameter was definitely less than .25" (was about 2mm, if even).
I like your setup. Is yours an automatic as mine is due to it being our third automobile for when we have guests and my Mrs. enjoys driving it too. I would like to go your route minus the headers. Where did you purchase your system (if you don't mind me asking)? Any trouble smogging it here in SoCal? Thanks.
 

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SoCadillac said:
I like your setup. Is yours an automatic as mine is due to it being our third automobile for when we have guests and my Mrs. enjoys driving it too. I would like to go your route minus the headers. Where did you purchase your system (if you don't mind me asking)? Any trouble smogging it here in SoCal? Thanks.
Socad-
Here is a ML-V system for you.....
http://Cadillacforums.com/forums/showthread.php?t=60938
PJ and I had the same system until he installed the new X-Pipe and Muffler.
Im going to install an X-pipe and dual resonators.....

www.cardomain.com/ride/833649
 

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SdMarineGuy said:
I think going with a dual in dual out muffler is a lot better that dual resonators because if you have dual resonators it gives your exhaust less chance to even itself out.
Ive been talking to Zoomers about this setup for a while, they seemed to think X-pipe with dual resonator. Thier resonators are simialer to Magnaflows wide open series mufflers. So im going to install either Zoomers or Magnaflows Wide Open series....
 

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onephatguy said:
Where did you get your X pipe? Who is the manufacturer? And hurry up and post the pics! Another time I'm going to STEAL from you.:sneaky:

We got to get a meet going for spring of 06.
I got the X-pipe and Magnaflow Muffler from SDMarineGuy. He knew a place where he could get the X-pipe and muffler at a reasonable price, then he shipped them to me in LA. If I can't post pics (I took them with my phone instead of my camera), I have the same set up as SD and he has pics on in the headers thread
 

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SoCadillac said:
I like your setup. Is yours an automatic as mine is due to it being our third automobile for when we have guests and my Mrs. enjoys driving it too. I would like to go your route minus the headers. Where did you purchase your system (if you don't mind me asking)? Any trouble smogging it here in SoCal? Thanks.
This guy in Palmdale is selling one for 50 bucks http://www.cadillacforums.com/forums/showthread.php?t=60938
I have an auto - My system is the V-exhaust (purchased from V-forum Member) - Magnaflow Mufflers (Nabers Cadillac - Costa Mesa, my dealer), X-pipe and Magnaflow Center muffler dual in/out (Purchased through SDMarineGuy - he knows a place that is pretty rerasonable) As far as smog, since I bought the car new, I neve had an issue with smog tests. I don't think I will ever have to do a smog test on this car, unless I sell it, then the new owner would have to get the smog test done.
 
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