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2011 CTS-V Wagon
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Discussion Starter · #1 ·
Hello y'all. It's been a couple of months since my introduction here (T0ast's 11 CTS-V Wagon). I won't go full crazy twin turbo or whatever but I do wanna keep this thread to post updates to what I did to my car. Since my introduction some things have changed slightly (including my wallet being way lighter).

This is what I said I will do in my first post and I'll add in red what I have now installed:
Stage 1 (550ish rwhp):
Ported TB -> Ported LS7 TB
Airbox Mod (Open Airbox with K&N) -> Airaid
Reinforced HX Brick -> material ready, just need to weld it
Bigger HX
ID850 or bigger -> ID1050x
2.4 or 2.5 Upper

  • Underhood ice tank
  • 3/4 inch hoses
  • E85 kit
  • NGK TR7IX


Stage 2 (600+ rwhp):
8.6 or 9.1 Lower -> 8.6 (not installed yet)
LS9 Cam + Springs
I did all the tuning myself and the car runs really good without any problems. I have already bought a 8.6 lower pulley but I will switch to that one as soon as I will do a cam, but I don't know how soon that will be.
I also installed a flexfuel sensor to run E85 and man am I happy right now. Just read thrugh the other thread where you are worried about gas hitting 5$/gal but here in Switzerland we're currently at over 9$/gal (Average of 2021 was 6.7ish) and E85 is 5.2$/gal. Only downside is there's only one station somewhat close to me that sells E85.
As soon as spring hits I will get a bigger HX and install the colder spark plugs. A catch can is installed aswell inside the airaid housing.
In November I ordered BBE high flow cats aswell but they keep pushing the order back. Current shipping date is in June.


Now for the optics of the car I blacked out the chrome parts of the headlights and replaced the amber reflectors with a black dummy. I replaced the washed out front emblem I had with a new black one. I'm currently running the stock wheels with winter tires and 8mm spacers in the front and 10mm spacers in the rear. I am planning on lowering the car but at the moment I rather spend that money on performance/cooling mods.


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2011 CTS-V Wagon
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18 Posts
Discussion Starter · #6 ·
Yesterday I installed highflow cats from Streetdrivenperfromance. It does sound a lot better under load now and it's screaming at WOT. Idle is not very noticeably louder. I do get a pinging sound now that I have read comes from the crimped sections. I will adress that some time in summer. Oil change was done at the same time and I replaced the spark plugs with the colder one.
Automotive tire Wheel Hood Motor vehicle Tread

Also I found a brand new set of roof rails for the wagon for a very good price. I love the look. Does anyone know what system the rail in the roof rack uses? I am looking for something to mount my snowboard in winter when I go boarding.
Car Automotive parking light Wheel Land vehicle Tire

Lastly while having the car on the lift I found a shot bushing in the rear. I have heard the rear clunking for the past weeks and I'm sure that's the cause for that. Anyone know where I can find a good replacement for that? I don't even know how that part is called in english to look for it.
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2011 CTS-V Wagon
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18 Posts
Discussion Starter · #8 ·
Thank you. I have ordered the bushing. Usually ebay is the easiest option to order things from the US or even the rest of Europe.
 

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Discussion Starter · #9 ·
I have been quite busy the past weeks. But I was able to work some on my car. I painted the brake calipers yellow as they are supposed to be on my car. And I added the black splitter at the front.
Cloud Tire Wheel Car Sky


I have also cut 1/2 a coil in the front to lower it a bit. I did find the Eibach bumpstops in there so the car used to be lowered at one point. Fortunately I never had any squeking or anything since all the other parts that need to go were gone already. I also decided to finally polish and wax the car to get rid of some blemishes that I have made. Turns out if you crash your fpv drone into your car it it will scratch it. lol
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Also as it turns out, I can't go any lower with that front splitter or I won't be able to enter the parking garage at my workplace anymore. haha
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I have been quite busy the past weeks. But I was able to work some on my car. I painted the brake calipers yellow as they are supposed to be on my car. And I added the black splitter at the front.
View attachment 159296

I have also cut 1/2 a coil in the front to lower it a bit. I did find the Eibach bumpstops in there so the car used to be lowered at one point. Fortunately I never had any squeking or anything since all the other parts that need to go were gone already. I also decided to finally polish and wax the car to get rid of some blemishes that I have made. Turns out if you crash your fpv drone into your car it it will scratch it. lol
View attachment 159299

Also as it turns out, I can't go any lower with that front splitter or I won't be able to enter the parking garage at my workplace anymore. haha
View attachment 159302
A clear cut reason to telecommute.
 

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2011 CTS-V Wagon
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18 Posts
Discussion Starter · #13 ·
The lowered car fun continues. :p
Automotive parking light Car Vehicle Grille Automotive lighting


I had some leftover carbon from another project so I decided to do carbon inserts for the front emblem.
Computer keyboard Input device Communication Device Wood Office equipment


And finally I was able to get rid of the crimped exhaust section on the drivers side. At the bend it probably cuts down to only half of the actual diameter from the rest of the exhaust:
Wood Gas Bumper Metal Plywood


Light Automotive exhaust Bicycle part Musical instrument Gas
 
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