catalytic converter

I feel like a dork, what I thought was a cat on my truck was actually the resenator! How in the world an "authorized" Ford dealer sold me my truck used with a piece of pipe where the cat was suppose to be is beyond me.  But then again these were the same BONE HEADS that put a service sticker calling for a 3000 mile oil change, NOT the book recommended 7500!  
2003 6.0 PSD, Edge Juice Platinum, Airaid/big ol'hole ram air, 4" turbo-back, TureTrac, 5" lift, 35X14.5 Toyos,& bright RED!!

Your book says 7500? That seams kinda high are you sure it's not kilometers? 7500 miles on synthetic and a good soot filter is OK but I don't care what the book says I would not run conventional oil with a stock filter for that long.  
2002 Dodge Ram 6 SPD Fass pump, afe cold air, mbrp 4" ss exhaust, 275hp RV injectors, edge ez, isspro gauges, South Bend clutch, track bar updated to 03-07 style, dss steering stabilizer system, 285 Cooper Discover

"If it doesn't have tit's a trigger or a throttle I'm pretty much not interested!"

You're completely right, the people who spent HUGE R&D dollars on my Powerstroke and made the service requirements up were IDIOTS!!    Read the print on Valvoline diesel oil in a gallon bottle, then look up the service requirements for a Powerstroke, yours too for that matter. Changing your diesel oil at 3000 or 3500 is like changing the oil in your gas motor every 1000 miles. Why not? 4 gallons of diesel oil and filters are cheap!!!  
2003 6.0 PSD, Edge Juice Platinum, Airaid/big ol'hole ram air, 4" turbo-back, TureTrac, 5" lift, 35X14.5 Toyos,& bright RED!!

Ive got a 2006 LLY with 6-Speed Auto.  Ive got the banks exhaust now but i like the stacks.  What does anyone recommend?  Keep the Cat or not?  Also I have the 6 gun PDA.  Will removing the cat interefere with the diagnostics or does anyone know?


2006 GMC Sierra
LLY 6-Speed Auto
8" Fabtech
Banks Ram Air,
6-Gun w/ PDA
Dual Monster Exhaust  

To keep or not to keep, that is the question. If you happen to be one of the only ones that give a *** about emissions you can always buy an aftermarket cat to replace to original. Magnaflow makes aftermarket cats up to 5" inlet and outlet. That would probably be the best of both worlds. There are many af termarket cats available up to 6", it would seem that they would flow more than stock. Before you chop, check your state requirements. If you are required to have one and you're caught without one it could be expensive.  

ok so I did some reasearch and found out that if you are not in california or not licing in ca with a ca emissions truck you need to get your cat from here magnaflow catalytic converter but if you are in cali you need to the this one California magnaflow Catalytic Converter it took me 5 phone calls to them to get this figured out but now Im glad i did  

I believe there was an article in DP a few months ago about exhaust flow and HP/torque numbers with and without the cat.

There was no perceived difference on the dyno without the cat than with it on.

If you're in a state like the Demokratik People's Republik of Kalifornia then I suggest you keep it on.  They are really starting to crack down on emissions related violations.



Kris  
2006 Dodge Ram 2500 QC 5.9L - No Mods Yet
2008 Dodge Ram 3500 QC 6.7L - Titan Fuel Tank Owner

take it off thats all i can say my dad has a 1991 chevy half ton 4 speed standard and i know its a gas but he took it off now its just got the muffler now the truck has way more power and gets way better mileage  

take it off thats all i can say my dad has a 1991 chevy half ton 4 speed standard and i know its a gas but he took it off now its just got the muffler now the truck has way more power and gets way better mileage