Exhaust drone solution.

[AusStinger]

I have JUN BL down pipes and mid section which then connects to the series 1 Australia only Bi-Modal rear muffler ( so 2.5 inch all the way ).
It sounds great and even better when I pull the fuse and leave the valves open all the time BUT as many of you know, with that, you get drone
I've just left the fuse in and driven it around as is, but a little while ago I remembered a trick which has helped with drone in the past ( and improved the exhaust note ).

So, I decided to go through some old pics and eventually remembered what was needed and purchased the parts.

Recently I installed the solution to my Stinger and guess what ? It worked !
Have been driving around for the last 2 weeks with the solution installed, fuse out and valves open and it's loud but nice ! ( and no drone so far ).

Anyway, here's what I did.

4 x Stainless Steel U-Bolt Exhaust clamps, a couple of extra S/S nuts to suit and a pair of exhaust vibration dampeners.




At the moment I have them installed as pictured but might move them around after a while to see if anything changes.




The ONLY 'kind of' negatives to this are, 1. it adds a bit more weight to the exhaust and 2. the vibration dampeners I used are a Toyota part

Anyway, this is working for me and I hope someone else finds this helpful and has success.

P.S. Manual shifting in Sports mode is pure

 

[Thomby]

Any way to get a comparison with & without?

 

[AusStinger]

Any way to get a comparison with & without?

Not really from a "recorded" perspective.
IMO my car sounds good in person but crap recorded and drone is also hard to record.

 

[fairmont1998]

I didn't know these were even a thing! Wonder how they'd go on the MBRP

 

[AusStinger]

I didn't know these were even a thing! Wonder how they'd go on the MBRP

If they work on my JUN BL they should work on the MBRP ( which is a better designed system than mine ) I would expect.

They also reduced the raspy sound of my system which I'm pleasantly surprised about.

 

[AWDGT2]

Do you have a link or source for the dampeners?
(edit) is this is? 17581-31010 Genuine Toyota Damper, Exhaust Pipe

 

[AusStinger]

Do you have a link or source for the dampeners?
(edit) is this is? 17581-31010 Genuine Toyota Damper, Exhaust Pipe

That's them.

Edit: When I installed them I removed the fiber washers that are stuck around the holes.

 

[AusStinger]

Full disclosure.

Today I re-greased my sway bar bushes and while under the car I found that one of my Bi-Modal valves was a bit lose and was rattling during engine revs so I that was probably part of my exhaust pain. I added a light spring to stop that and now it sounds even better again.

 

[AusStinger]

Can't believe how good these things can sound !
No drone at all, and with the valves open I get a tiny burble on decel.

Makes me fall in love with it all over again.

 

[AusStinger]

This has been kind of a game changer for me. I now drive with no music etc just listening to the exhaust....

If anyone else has success with this, let me know. I really hope others get the same results.