and when will you know they are cloged? i think mine are ok but my truck has a wierd smell at idle and i can't figure out what it is. snake eater thinks its my cats but i think he just wants me to gut them lol.

 

Clogging is really a secondary effect. The cause is extra fuel, oil, or additives that are not burning. When this stuff hits the catalytic converter element it burns. That's what the cats are supposed to do. If there is too much it can overheat the elements and make them distort. Distortion combined with deposits can block the tiny passages.

 

so how ca you tell when its about that time? when its starts so tp speak do they go quick or take time. and does anybody have gutted ones with maganaflow is it loud or still quiet my maganaflow is about 36" long, longest i could find.

 

My one cat plugged up on the weekend https://www.performancetrucks.net/fo...d.php?t=362099 , I think it was getting clogged for awhile. You will notice it losing power in the upper rpm, then once it gets real bad you lose all power and it will ping like crazy.

I have my cats gutted now, and it is loud as hell. I have the short magnaflow muffler, with pipes in front of the rear tire. I'm planning on welding in some new cats this weekend, because it is way way too loud.

 

does your magnaflow keep the rasp down any? my truck was way loud with no muffler then i put in this magnaflow now its really queit but yet deep enough it drones in the house but not in the truck lol. i just don't wanna be leaving any power behind is all i guess.

 

When you gut the cats it will be loud even with the magnaflow.