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HI THERE ALL I HEARD THAT IF YOU REMOVE THE CAT ON THE R AND REPLACE IT WITH A MIDI CAT IT ADDS TO THE PERFORMANCE ,IS THIS TRUE ,PLEASE EXPLAIN!!!
 

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With no cat...<p>You will increase performance.<p>You will kill baby seals.<p>You will make trees cry.
 

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Re: (chinaonnitrous1)

HAHAHA so u therefore saying it is worth it ,do u have to replce the cat with a midi cat tho ?
 

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ummm im pretty sure the negatives outweigh the positives in his post. dont remove it. get a downpipe and a catback to its not ghetto. i have never heard of anyone just cutting out the stock cat and replacing it down the line on the Rs.
 

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Re:

No midi cat is required. You would only need a rear O2 spacer if you don't want the CEL. This is of course with going catless for off-road use only. <p><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>SA-R</b> »</i></TD></TR><TR><TD CLASS="quote">were can i get a downpipe from ? </TD></TR></TABLE><p>From Swedespeeds one and only Phuz<p><A HREF="http://www.phuzzymotorsports.com" TARGET="_blank">http://www.phuzzymotorsports.com</A>/<br>
 

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From my experience (this is driving a cat less mustang gt previously with long tube headers). The R sounds great with a race cat Downpipe, and even then the smell can be pretty bad. I don't know what it is about it and not trying to change the subject but on a turbo car the smell just seems a lot worse anyone else notice that?
 

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Re: (Bulldog6Z6)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Bulldog6Z6</b> »</i></TD></TR><TR><TD CLASS="quote">From my experience (this is driving a cat less mustang gt previously with long tube headers). The R sounds great with a race cat Downpipe, and even then the smell can be pretty bad. I don't know what it is about it and not trying to change the subject but on a turbo car the smell just seems a lot worse anyone else notice that?</TD></TR></TABLE><p>No change in my smell after installing the Phuz DP. Big change in turbo spool-up and lots more turbo noise however.
 

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Re: (adykes)

For spirited "Off-Road" driving, an OEM DP without the cat makes a phenominal difference. You can get a used/junk DP for cheap, then do the catalyst "removal" in short order. The turbo revs up quick and you will be able to pull all the way to the red-line, even in the heat of summer. You also need the O2 extender - with it, you will not get any codes. Easy swap to put the factory DP on, takes just about 30 minutes.
 

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HASING HIGH FLOW CATALYIC CONVERTER IS WILL IMPROVE AND CAR PRO-FORMANCE!<p><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote »</i></TD></TR><TR><TD CLASS="quote">You will kill baby seals.</TD></TR></TABLE><p><b>Correct</b>: You will physically club them to death; Al Gore will not be happy.
 

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Re: (cmurphy2266)

Al Gore invented the catalytic converter. <p>Maybe turbo cars run a bit richer, or perhaps the A:F ratio varies with boost, thus attributing to a different odor than NA cars? Either way, catless cars do stink (from experience) and will not pass emissions testing (if you have it in your area).
 

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Re: (T5 for Life)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>T5 for Life</b> »</i></TD></TR><TR><TD CLASS="quote">Al Gore invented the catalytic converter.</TD></TR></TABLE><p>hmmm, I don't think he did, I think he was too busy inventing the internet. He might have though, He is amazing. <p><br>
 

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Re: (cmurphy2266)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>cmurphy2266</b> »</i></TD></TR><TR><TD CLASS="quote"><p><br><b>Correct</b>: You will physically club them to death; Al Gore will not be happy. </TD></TR></TABLE><p> <IMG SRC="http://i54.photobucket.com/albums/g97/tigaubrey/crying-indian-tear65p.jpg" BORDER="0">
 

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I have a 3.5" catless dp. It makes baby seals and otters cry.<p>Thats why I'm going toward a 3" with cut out before the cat.
 

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Re: (Oceans60R)

Oceans...that's from the littering commercial from the late 70's-early 80's?!
 

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Re: (T5 for Life)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>T5 for Life</b> »</i></TD></TR><TR><TD CLASS="quote">Oceans...that's from the littering commercial from the late 70's-early 80's?!</TD></TR></TABLE><br>Correct! mid 70's if I remember correctly.<p>I figured if a piece of paper thrown on the ground made him cry, imagine what extra pollution like CO and HC's would do to this fella.
 

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I had a friend do some dyno comparisons, and the differences between an aftermarket downpipe (high flow CAT) vs. no CAT at all, or a "test pipe" were negligible.
 
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