Hey guy's. I just got my DP today and I was looking at the flange to connect to the CAT. How are you supposed to connect it to the CAT? I dont see a lip for a donut gasket. Am I supposed to bolt it straight to the CAT without springs? Is that what the flex pipe is for? Or am I supposed to get the cat modified? Thanks for any input guys.

 

I would think you wouldn't need the springs with the flexpipe...i would just bolt it up like that.

 

I didn't use springs on mine. I got a little aluminum flange to go in there though.

 

to what i beilive that the bolts with the spring take up the flexing action but now you have the flex pipe so i would gess that you dont need them

and if you use the doughnut i beilve it is alot smaller like a 2 1/4 if not smaller and that wouldnt be very good

 

You should probably have a matching welded onto your cat...that's the same type of flange I'm using on my new dp and I'm also using a regular gasket (not a donut). You're not going to use the stock cat, are you?

 

OK. So are you saying that I need to get an identical flange that is on my downpipe and get it welded to my CAT. Then put a gasket inbetween there? And no I am not using my stock cat. Thanks for the reply's.

 

So is this what the flex pipe is for to replace the springs. Looking for more opinions. Thaks.

 

Right, if you're not using a stock cat, just get an identical flange to weld to your cat and bada bing.

 

Bada boom.
Thanks.