CAT Delete - Real World Experience?
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Senior User
Joined: May 2006
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CAT Delete - Real World Experience?
I am running a Banks Monster cat back exhaust as well as other mods. I recently emailed Banks asking if they made a cat delete pipe that would work w/ their Monster system. A Banks rep called me about 60 minutes later (IMPRESSIVE customer service) and said Banks did not make a cat delete pipe. With that in mind, the rep also said that I would see no/little benefit in doing the cat delete. I don't expect wild HP or milage gains but I was thinking I might help EGT's. Planning on keeping the Banks Monster muffler just for quiet sake.
Does anyone have any experience with just deleting the cat and maintaing a 4 or 5" aftermarket muffler system?
Does anyone have any experience with just deleting the cat and maintaing a 4 or 5" aftermarket muffler system?
Elder User
Joined: Jan 2007
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From: Houston, TX
Originally Posted by Excursionator
Does anyone have any experience with just deleting the cat and maintaing a 4 or 5" aftermarket muffler system?
I haven't noticed any real performance gains, EGT reductions, etc. I do notice that my turbo whistles a lot louder! However, I think a lot of that is because the new downpipe is not insulated like the stock one. But some of the louder turbo whistle does also comes from not having the cat on. I do use the Bank Monster muffler.
They don't sniff diesels down here (yet), so the old, giant cat went in the dumpster. If cats are ever required someday, I'll buy a new performance cat.
TX
Post Fiend
Joined: Oct 2005
Posts: 10,626
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From: Plano TX and Brentwood TN
Originally Posted by TXHillCountry
They don't sniff diesels down here (yet), so the old, giant cat went in the dumpster. If cats are ever required someday, I'll buy a new performance cat.
For me it was about sound mainly. I think that it does reduce egts, but I think it's not something your going to see a drastic improvement on. I don't think the cat's now are quite as restrictive as they used to be, that is why I didn't see a drastic reduction in egt's and why it didn't seem like the turbo spoiled significantly sooner then before.
Elder User
Joined: Dec 2007
Posts: 971
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From: IA MN SD
Originally Posted by TXHillCountry
...They don't sniff diesels down here (yet), so the old, giant cat went in the dumpster. If cats are ever required someday, I'll buy a new performance cat....TX
Senior User
Joined: Nov 2007
Posts: 335
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From: Austin, TX
Originally Posted by w_huisman
Shoulda sold that thing. A decent used cat brings $200...
Where would a good place to list one for sale be. Craigslist? Still have mine was going to toss it but not after reading that, could get a tank of fuel for it (now that is just sad).
Senior User
Joined: Nov 2007
Posts: 335
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From: Austin, TX
I did not run my MBRP system at all with the cat in, so do not know how big a difference it is making. I looked through the cat when I took it off and would think it is restrictins a ton, as looking through the 3.5" hole I only saw about a quarter size light at the other end.
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Junior User
Joined: May 2006
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From: in a house!
Originally Posted by w_huisman
Shoulda sold that thing. A decent used cat brings $200...
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Posting Guru
Joined: Dec 2006
Posts: 1,391
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From: NorCal
Originally Posted by Excursionator
I am running a Banks Monster cat back exhaust as well as other mods. I recently emailed Banks asking if they made a cat delete pipe that would work w/ their Monster system. A Banks rep called me about 60 minutes later (IMPRESSIVE customer service) and said Banks did not make a cat delete pipe. With that in mind, the rep also said that I would see no/little benefit in doing the cat delete. I don't expect wild HP or milage gains but I was thinking I might help EGT's. Planning on keeping the Banks Monster muffler just for quiet sake.
Does anyone have any experience with just deleting the cat and maintaing a 4 or 5" aftermarket muffler system?
Does anyone have any experience with just deleting the cat and maintaing a 4 or 5" aftermarket muffler system?
I have the 4" Banks turbo back system and I just ordered the Banks extension pipe that is for the longbed crewcabs and trimmed it to fit in place of the cat, it works perfect!!!
Senior User
Joined: Nov 2005
Posts: 382
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From: Big Red country
Cats have rare earth metals in them that are worth some big bucks, depending on of course, the current market price. One cat might only be worth $20 or so. It is starting to become a problem where criminals are removing them from under cars at night in order to get drug money! Just goes to show you, it takes all kinds.
My truck has the stock exhaust however, I drilled the center out of the cat. The turbo has a louder whistle now. That's good enough for me. It's got to flow better.
My truck has the stock exhaust however, I drilled the center out of the cat. The turbo has a louder whistle now. That's good enough for me. It's got to flow better.
Fleet Mechanic
Joined: Jun 2006
Posts: 1,589
Likes: 20
Originally Posted by sandjunkie
Are you guys kidding? I put my MBRP system on and left the cat in. A week later, I took the cat out and it made a huge difference. Difference in Sound, EGT's, and Turbo Spool. It isn't going back on.
DSMMH