Is the DC-Sports DP a full 3" at the back flange? If so, what exhaust is also 3"? every exhaust i see is tapered to 2.75 or less for the stock cat compatability..... What are my options?

 

Any 3" exhaust will bolt up to your stock cat. The only thing is that the 3" hole will overlap the smaller hole of the cat. At any rate, most if not all, will match the flange bolt holes.

 

rs*r is a lil bigger than 3 inch,,,like 3 and a quarter or a li less,,can't remember

 

All the dp's I've seen that advertise 3" are a full three inches flange to flange, with no neck-downs at the flanges. It's just the cat back exhaust systems that seem to be a problem. I know the Greddy exhausts that are advertised as 80 mm do neck down at the flange that bolts to the cat (or cat delete pipe) Buschur advertises they're exhausts from the turbo all the way back to the muffler are full 3", with no neck-downs at all.

 

The Buschur is full 3" if you get their Turbo Back system. They also have an optional system to keep your stock cat.

 

Helix is a true 3 inch also

 

What all do I need if I have the Authority downpipe and the turbo outlet and soon to get the Authority cat exhaust system?? Does is all bolt up with the factory cat or do I need a new one or go without one?? Thankyou for your time

 

My exhaust is a full 3". No taper.