UPDATE: I took it to the exhaust shop this morning and decided to just have only the SRT exhaust installed. Eventually I will work on the manifolds and mid pipes but I really wanted to fill in the gap in the rear bumper. I was originally going to have them install a Y pipe right after the mid pipes outlet into the dual inlet SRT exhaust but what we discovered was that one of the inlets on the exhaust simply bends right inside the muffler casing and reconnects to the other inlet forming an internal Y pipe. So to eliminate additional work we simply used the main inlet and capped off the other inlet. There is a mixture chamber inside the muffler that allows the air to exit both outlets in the rear thus performing like a true dual out muffler. Here are some photos of the work.
First step is to cut off the exhaust inlet flanges and reattach one of them to the mid pipe as shown below. You won't need the other one for this part of the conversion . I saved all the flanges for later down the road when I eventually do the SRT mid pipes. They're hard to find so hang on to them.
Next step is to weld 2.5" pipe from the flange to the muffler. Remember that the SRT exhaust piping is 2.75" so the 2.5" will allow the pipe to fit INSIDE the muffler inlet for proper flow. The other inlet is simply welded closed since it won't be used.
Fresh coat of VHT high heat header paint to cover the welds.
The rest of the exhaust uses the original hangers and to ensure proper rear alignment I installed the rear SRT tail pipe hanger, as mentioned in an earlier post, for ease of installation out the rear of the bumper.
Rear tips installed from several angles. I love how the Curt hitch is fully concealed yet accessible above the new 4" tips.
Looking straight down above the tips.
Below is a short video clip of the cold startup while still on the lift. I'll try to post a launch video a bit later. Absolutely no cabin noise or drown. Just the right amount of growl as expected from an OEM exhaust. Enjoy!
2006 Jeep Grand Cherokee Overland 5.7L, BT Catch Can, SRT Eibach Pro Kit, 20" SRT Factory Repros, SRT Front and Rear Bumper and Side Skirts, LED interior lighting, SRT aluminum interior trim, SRT steering wheel, Shorty Billet Antenna, SRT intake, SRT exhaust with 4" double wall tips.