HollySSV
Member
- Joined
- Oct 19, 2017
- Messages
- 36
- Reaction score
- 14
- Points
- 8
- Age
- 40
- Location
- NSW
- Members Ride
- 2014 VF SSV Sportwagon S1
Hi All,
first time posting long time viewer. I have been watching quite a few posts on afm drone with larger exhausts, particularly with VE & VF wagons. I finally figured out on my wife’s VF SSV after much trial, how to all but eliminate the drone while afm is still active on the car.
My exhaust fitted is as follows:
1) VF HSV GTS Extractors & Cats
2) HSV 2.5inch Catback with VE/ VF1 vacuum Bimodal mufflers
3) eBay vacuum controller kit for bimodal mufflers.
The exhaust sounds fantastic in 8cyl mode with my Walkinshaw intake and bimodals open at wot. It’s when it cuts down to 4cyl mode at about 50-60kph and 100kph with mufflers open the horrendous drone kicks in. I found I was having to constantly close the bimodals to kill the drone.
After chopping and changing around with different mufflers and ideas, I finally got the shits and started researching into other options such as H & X pipes. Today I finally got the courage up to pull out the Welder, Dremel, Grinder and some pipe. Low and behold I have finally fixed the drone issue in loud mode. I added a 2.5 inch H pipe section to just behind the center resonators or hotdogs, what ever you want to call them. Wow!! what a difference it has made. I can now drive around in 8 or 4cyl mode bi modals full open and no drone at all. I am so happy with the end result. I can now enjoy the sweet V8 sound without my ears bleeding from that horrible noise. I hope this may help anyone suffering the same issues.
Cheers Josh
first time posting long time viewer. I have been watching quite a few posts on afm drone with larger exhausts, particularly with VE & VF wagons. I finally figured out on my wife’s VF SSV after much trial, how to all but eliminate the drone while afm is still active on the car.
My exhaust fitted is as follows:
1) VF HSV GTS Extractors & Cats
2) HSV 2.5inch Catback with VE/ VF1 vacuum Bimodal mufflers
3) eBay vacuum controller kit for bimodal mufflers.
The exhaust sounds fantastic in 8cyl mode with my Walkinshaw intake and bimodals open at wot. It’s when it cuts down to 4cyl mode at about 50-60kph and 100kph with mufflers open the horrendous drone kicks in. I found I was having to constantly close the bimodals to kill the drone.
After chopping and changing around with different mufflers and ideas, I finally got the shits and started researching into other options such as H & X pipes. Today I finally got the courage up to pull out the Welder, Dremel, Grinder and some pipe. Low and behold I have finally fixed the drone issue in loud mode. I added a 2.5 inch H pipe section to just behind the center resonators or hotdogs, what ever you want to call them. Wow!! what a difference it has made. I can now drive around in 8 or 4cyl mode bi modals full open and no drone at all. I am so happy with the end result. I can now enjoy the sweet V8 sound without my ears bleeding from that horrible noise. I hope this may help anyone suffering the same issues.
Cheers Josh