Cat and Muff delete w/ no mods?

[Fararms]

Howdy, I'm new to this forum... although I'm not new to CTD. My '94 proved reliable and bullet-proof. I recently bought a new '05 2500 QuadCab 4x4, G56, 3. 73's... I've heard that deleting the Cat and muffler will either throw codes or 'de-fuel' the engine. Is there any truth to either of these rumors? Will deleting Cat and Muffler provide any mileage/performance enhancement as in the early 2nd Gen trucks? Also, was told that I needed a module with 'boost fooling' to delete Cat and muff? Any input would greatly be appreciated.

 

[NStates]

Fararms



I deleted the muffler and purchased a performance muffler. No noise problems as it did not change the sound much. Did not remove the cat.



Norm



My Truck – 2005 RAM 3500 SLT Quad Cab 4x2 Laramie Sport Bright White 6-Speed HO – Limited Slip - Edge Juice Attitude –PacBrake – 65 gal. Toolbox/fuel tank – Starboards – Recon Smoke Cab Lighting - Pulrite Super 5th – Kenwood TM 261 –Towing A Teton Fifth Wheel

 

[Prairie Dog]

When the third gens first came out and guys started installing 5" exhaust systems w/o any other mods, they found that H. P. actually went down on the dyno. Seems the boost was building too fast or too high and the computer was defueling.

You may run into the same thing unless you have some kind of boost fooling.



Scotty

 

[lethal injection]

Mine has no cat or muff and its fine!!!!!!

 

[Fararms]

mileage?

Lethat injection,

By cutting off the Cat and Muffler, did you notice any difference in mileage? I realize it will be louder, but I'm deaf anyway!

 

[Fararms]

boost fooling?

Is there a box available that just 'boost fools'? Has anyone had problems with the '600' CTD, stock minus Cat and Muffler?

 

[Hoefler]

When I deleted the cat and muffler, I found that the turbo spooled faster and I had better low end response. I thought the cat was plugged up, it had turned blue from the cat to the turbo and was silver from the cat back. I also installed a aftermarket muffler to tone it down.

 

[lethal injection]

i did not notice any difference in milage as I did it the same week I bought the truck.

 

[Mark Craig]

Fararms,



We've sold a zillion of the MBRP direct bolt on mufflers and cat test pipes and never had an issue at all. Better spool up, better MPG and a little HP as a bonus! No module required at all. Now if you add something like Edge Juice/Attitude you're really gonna see a performance change, but you don't have to to get a muffler and cat pipe. Check out the MBRP one it has welded hangers that re use the stock rubber mounts, joins up the stock 4 inch pipes and sounds really good too with a deep tone. You don't want to cut up your cat, very expensive, that's why we have an off road and racing pipe that bolts on.



Mark @ DPPI

 

[DavidBurt]

Mark I have been thinking about doing the same thing that Fararms is talking about but I didn't totally understand your post. Are you putting in a cat test pipe and changing the muffler? and if so how is the sound?

thanks in advance

Dave