Vinh Nguyen

The regular loud sounded deeper/louder

ti is slightly higher pitch, not as loud (unless with inserts)

dsteding

I had the loud and then the Ti on my 991.1 GT3 with Dundon’s headers. Yes, less low notes compared to steel. Maybe 1-2 db lower overall. For me it sounds perfect (the loud was really really good).

Passes 103 db days with their Nurburgring tips in (I’ve passed those days at Thunderhill, Laguna Seca, and PIR). About a 6-7 db reduction with the tips in.

Anu2g

I just put Dundon's Ti muffler on yesterday, and all I can say is wow! No drone below 4k and screams up top, with higher pitch than my prior setup (Dundon headers/cats/sides with OE center). It sounds perfect for my preference.

Cay_PI

Is it louder or less loud compared to the OE center?
With no drone, you mean less drone than OE?

Vinh Nguyen

Both the dundon steel and ti loud muffler will be louder then the OE center.
The OE center doesn't drone unless you remove the side mufflers (not sure at what range)

Anu2g

It depends on what exactly @Cay_PI is asking. @Vinh Nguyen your experience is with the full OE exhaust, the Dundon setup w/ steel loud, and the Dundon setup w/ Ti loud (and the Dundon setup w/ Ti loud and Inconel louder inserts).

@Cay_PI may be asking about the Dundon setup w/ OE center, which is what I've been running for a while now. In swapping the 2.5" sides w/ OE center out for 3" sides w/ Ti Dundon center, the changes I notice are:

1) slightly louder idle w/ PSE on
2) less drone at 3k-ish w/ PSE on; note that I don't really feel like the prior setup droned, though, so this is really just picking hairs
3) louder 4k on up
4) higher pitch everywhere

I never ran a full OE setup as my car came with Fabspeed headers and a Sharkwerks center bypass (which I then swapped for Soul side bypasses and OE center, and ultimately jumped to Dundon). FWIW, I think the Dundon setup with 2.5" sides mated to the OE center is the best bang for buck; it's not cheap by any stretch, but it's a really solid value prop imho and sounds fantastic on the street and the track.

-Anu

PS: shout out to the RL member that I was able to buy the Ti muffler second-hand from.

Cay_PI

I meant a comparison of the oe center to the dundon titanium center on a car without side mufflers (dundon long tube street headers in my case). Its drony between 2000 and 3000 rpm with the OE steel and titanium centers and a little to loud, especially with flaps closed.

So you have the loud version of the dundon titanium center, right?

Anu2g

Yes, I have loud titanium center

cSurf

Feel similarly, picked up the full Dundon kit (headers, cats, Ti loud) and find it to louder (as expected) and with a lot more drone/boomieness than the OE (not expected). Just a much less refined sound all together. Surprising as that's contrary to much of what's been posted here.

Could be my set up. I am bringing it back to my installer to double check connections/vacuum lines as well as to install the 'loud' trumpets (which, paradoxically, I am told make the exhaust quieter with the valves closed).

In general I was expecting and don't mind more dB, but was expecting a crisper/cleaner sound w/o the side mufflers + the Ti center, thus far, quite the opposite.

Performance increase is real/super noticeable.

Ted@dundonmotorsports

Drone and Boom seriously suggest that the valves are not working as intended. The Ti muffler is very docile at low speed. Regarding the Loud Inserts, they certainly amp up the sound with valves open, and I think it might just be that the difference is greater (from valves closed to valves open) that makes it seem "quieter" with them installed and the valves closed.

Anyway, if you have any questions or trouble, give us a shout and we are happy to help.

turtl631

I may be interested if you want to sell the Ti muffler.