Short answer. Do It.
From the CNC D bush couplers with grease nipples. Almost triple the size of the original OEM ones. Installation is easy.
I was to impatient to wait for the rear end links to install at the same time. I am currently waiting for the rear end links 4-6 weeks lead time. As the original links failed within a couple of days of installing the rear sway bar.
The sway bar instantly makes the vehicle feel more squat and adds a lot more confidence carrying speed into a corner.
I know that when the rear links come. This combination will be the best bang for buck upgrade for the B7.
Second to this would be the 034 HFDP
034 Motorsport - Adjustable Solid Rear Sway Bar, Audi B6/B7 A4/S4/RS4 - 034-402-1000
Mark Collyer
VPA 034Motorsport Stage 1 ECU and DSG tune
Already having a stage 1 tune from another tuner, and after hearing so many good things about 034Motorsport and buying previously from VPA I changed over to their stage 1 tune package. Super fast service and now I have the ability to flash myself from home.
The tune itself is worlds better. So much more enjoyable and driveability is much better, its just more predictable and fun. Highly recommend VPA and 034Motorsport, its a great pairing!
Firstly I have had 3 different tunes and they are as follows:
1. Revo
2. Integrated Engineering including TCU Tune
3. 034 ECU tune and TCU patch (which is a part of this package)
My current car is a 2018 Audi S5 B9 and this tune has made the car come alive. The biggest difference between the closest competitor IE is that the shift points are at a lower RPM and maximum torque is produced at a lower rev range while still having a smooth power delivery. I want to highlight that the TCU patch will enable the higher torque to be utilised and makes the shifts faster. 034 are currently working on a proper TCU tune that will add additional features.
The tune allows for RS5 type start up and while in Sports Mode enables a lot of crazy pops and bangs (Stage 1) which brings a smile to my face every time I upshift or downshift. Added benefit is that in Dynamic Mode exhaust valves are always open instead of opening during a certain rev range, the auto stop start feature now has a memory so if you disable it, it will always be disabled until you enable it again (Thank you 034 for that). Tune is very easy to flash but ensure to have a battery charger connected before flashing as the 1st flash usually takes 15 - 25 minutes after that you will need shut down the application, start the car, switch off the car, close and restart the flashing application and flash the TCU file. 034 also have the fastest "stock" B9 s4 and hold records for many of the Audi and VW applications, the amount of time that they spend trouble shooting and calibrating their products shows because of the end result.
I can't praise the tune enough having experienced several popular tunes. Power delivery is very strong and shifts are faster, turbo spools faster and peak torque is produce at a lower rev range, car throttle is noticeable more responsive and lag is reduced, put the car back into Comfort and car is once again is tame. Critical thing that I must mention is that all factory safety settings with the ECU and TCU is maintained with 034 tune, they do not disable any of the factory features. I'm currently on 93 file which is 98 RON in Australia and could not be happier.