Some members have been asking me questions so I’m submitting this quick post. Parts arrived Saturday, I installed them yesterday. First, my Crew Chief Stella confirmed the part numbers were correct.

https://cimg9.ibsrv.net/gimg/www.6sp...26fd79599.jpeg


There is nothing worse than having a small component hold up a project so I ordered pressure hoses, gaskets, seals and duct caps separately in advance. Upon unpacking I was delighted to find the ducts already had Gaskets, seals and caps pre-installed. The pressure hoses were the wrong ones but I ended up not needing them anyway. All 4 existing hoses fit perfectly. After removing wheels, inner fenders, tail lights and bumper cover I was ready to begin the project. I removed the left side IC mounting bracket with IC and ducts intact. Next assembled the new left ducts and IC.
Everything went together smoothly, quickly and perfectly as they should being all OEM parts


https://cimg4.ibsrv.net/gimg/www.6sp...cc09d9869.jpeg

This was one of the easier mods I have done, and the location was very accessible. The assemblies mounted in place and fit perfectly.


https://cimg9.ibsrv.net/gimg/www.6sp...c3f553b61.jpeg

After a pressure test I reassembled the body components - done. Overall a very easy mod. It took me about 4 hours start to finish. The guys at Sonnen gave me great Customer Service. Again, the only parts needed were the 2 IC’s and 4 ducts.

9975754710101C Lower duct
9975754720101C Lower duct
99757565701 Intake duct
99757565801 Intake duct
99711064071 Intercooler
99711063971 Intercooler

Wow, didn’t know the .2 ducts are actually wider and bigger. Interesting.

Update:
Since the beginning of this project I have been concerned if my .1 top pressure hoses would work with the .2 ducts and IC’s since the .1 and .2 pressure hoses have different part numbers. The lower hoses off the turbos are much longer and flexible so if the lower IC inlet location moved a little in any direction no problem, they can reach. The upper pressure hoses are short, rigid and have a slight bend in them. The .1 pressure hose on the right fits perfectly, it locks into the IC and fully slips onto the Y pipe flange with ease. When I did the install I forced the left hose onto the Y pipe and tightened everything up thinking all was well. Today after running the motor a while I noticed the left top pressure hose was under tension, and actually pulling the left side of the Y pipe down a little. The result is the lift off Airbox cover is not fitting on the Airbox so well now due to the Y pipe not being perfectly level. Also the angle of the cut end of the left hose is not matching the angle of the Y pipe flange when the hose is slid on, and the hose is 1/4” shy of fully sliding onto the Y pipe unless it is forced. The outlet neck of the .2 left intercooler must be at a slightly different angle and/or location than the .1 was. I’m surprised at how the right .1 hose fits perfectly, but the left one does not. You would think they both would fit, or neither of them would fit. Today I ordered a new .2 left pressure hose, hopefully it will correct the issue. That part number is 997-110-645-70. There is only one in stock in the US and it’s heading my way from Atlanta. I’ll post the results.

Update:
.2 Left Pressure hose arrived. It is the same length as the .1, however it is contoured differently.


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.2 on top, .1 on bottom.

The .2 fit much better and allowed Y pipe to be perfectly level and Airbox cover fits as it should. All is well. So components are:
- .2 Ducts and IC’s.
- .2 Left upper pressure hose.
- .1 Right upper pressure hose.


https://cimg4.ibsrv.net/gimg/www.6sp...682ff7269.jpeg

The inlets of the top ducts and outlet of the bottom ducts are the same size as the .1s. The ducts only have larger openings where they attach to the longer .2 IC’s. My phone camera angle made the outlet duct on the left appear larger but they are the same.

No, Johnny sorry I just checked. I was anxious to complete the install.