CNT Downpipe to Cat-Back Adapter (Question?)

[jlinnell98]

So I ordered a CNT catted dp along with the adapter (I have an SPT exhaust), and in the description it says....

"This adapter will allow you connect a 3" downpipe to your factory midpipe without any leaks. This part only includes the flange. It is designed to be used with your factory donut gasket, a flat 3" gasket and longer bolts."

My question is, what size bolts to I need to hook this up? I can't really take anything apart as I'm getting this installed an hour away from my house (where there's a lift) so I need to have all hardware ready to go. I already purchasd some turbo to dp bolts (in case mine get damaged). Let me know if you can help! Excited to go stage 2 soon!

[Mikie13]

The SPT exhaust is already a 3in exhaust. Methinks you won't need that adapter considering you'll be mating a 3inch flange to a 3inch flange.

Just get bolts that are long enough from any hardware store...not that big of a deal really.

[jlinnell98]

The SPT exhaust is already a 3in exhaust. Methinks you won't need that adapter considering you'll be mating a 3inch flange to a 3inch flange.

Just get bolts that are long enough from any hardware store...not that big of a deal really.

Everything I have says it's 3" axel back but 2.5 from dp to axel. It's a 2010, not sure if anything changed from 10/11/12. So I guess I'm just going to grab a bunch of random bolts and use whatever works, I have no way of getting under the car to see what I need so I'll just have to give it a good guess and go from there

[Mikie13]

You don't have a stock jack in the trunk?

Yeah it does look like it tapers to 2.5in to mate to the stock DP. I'd sooner have that part chopped off at a shop and a 3in flange welded on to get rid of that minor restriction.

[jlinnell98]

You don't have a stock jack in the trunk?

Yeah it does look like it tapers to 2.5in to mate to the stock DP. I'd sooner have that part chopped off at a shop and a 3in flange welded on to get rid of that minor restriction.

I suppose I could jack it up with that, just lazy I suppose. I heard you don't gain much more with a full 3" vs. stock unless you are doing some serious mods, I'm sticking at stage 2 for now so maybe in the future I'd consider going 3" all the way back. I like the sound of the SPT and don't really want it much louder, not sure if making it 3" all the way back really makes that much of sound difference

[Mikie13]

That little couple inch section where it tapers won't really make a difference at all in gains or sound. The rest of the exhaust will already be a 3inch once you put the downpipe on.

The power alone comes from the Downpipe as well...CBE doesn't do anything but change noise.