How do you reinstall the cat??

[BrinkF350]

I have inspection at the end of the month and need to reinstall the cat. I have a 4" mbrp turboback with cat delete. Do i have to loosen everything from the tailpipe forward?? Thanks for the help...

[DoubleDpsd]

is it welded or bolted in via flange?

[BrinkF350]

The cat test pipe is bolted in at the flange.

[AvroAero]

Losten the bolts and slide her out. Might be tight though.

[00Turbo444]

Im a MA inspector and they might not notice/care I dont really look to hard under a diesel

[BrinkF350]

That's definitely some positive news!! Where abouts are you located in Mass??

[00Turbo444]

Southeastern part in between fall river and providence

[DryHeatDude03]

I was able to just unbolt my delete pipe from the flange and take the u clamp off from the other side of the delete pipe. Then took the system loose from the delete pipe hanger and the next 2 hangers down system. I was then able to persuade it out. Before installing the original cat in place I would recommend grinding off the spot weld that acts as a stop on the non- flanged end, (this will give you the space to slide the cat back and forth) ,and sand the pipe good so it slides easily in the pipe. also cut back the "too" long studs on the cat about an 1 1/2". it should go in with a bit of elbow grease then. Its a good idea to have a new gasket on hand, ( I tore mine, so I need to get another one). Its funny though, like 00Turbo44 stated, the inspector didn't even look under the truck.

[BrinkF350]

Thanks man, that sounds like it will do the trick.