ajw45

Hey! I need to get some turn downs this year to make sure I can pass sound and that got me thinking about exhaust options. Has anyone tried the conversion to the GT3 center section and if so any feedback on sound and dyno results? Currently thinking the conversion plus a used stock GT3 exhaust or the DMS exhaust (quiet/orange) might be the way to go..... TIA!

PCarOMFS

to_riffic_day

I have a GT3 muffler I picked up about a month ago. I am highly considering this conversion.

ajw45

Do it and report back! I will make donations towards dyno runs

garyever

Just a heads up on considering to order that Dondon Motor Sports center Muffler (quiet/orange). I was one of the original people that Pre-Paid their discounted special offer Sept 2017 for a new product that advertised delivery in 45 days. I have recently had to resort to Cretit Card Reversal to retrieve my $3250 after 5 months of phone calls most of which were not returned and the reversal has still not been accepted by Dundon. Not certain they ever got this product off the ground and may still be collecting prepays from unsuspecting buyers.

Alan C.

Completely the opposite experience for me. I preordered headers for my GT4. I believe I received one of the first sets. Took a little longer but it was, as stated at the time, a product in development. Jamie returned every phone call and email in a very timely manner.

Roadster08

I have the 991.1 GT3 RS Titanium muffler that I will be listening FS soon for those that want to do the switch. Would need the TPC kit though to work on the GT4

Jamie@dundonmotorsports

Hi Gary, yes there were unforeseen delays in the manufacturing of our mufflers. That said, we have been shipping since shortly before your charge back. We weren't notified of your charge back or desire for a refund until after it had occurred. I reached out with this email as soon as I saw this. Also I remember talking to you a few times at the shop assuring you that at any point you wanted a refund, that the wait was too long we would be happy to refund you. The suppliers used for the mufflers didn't make the initial shells correctly and that was part of the delays. We obviously didn't communicate well enough with you on this product. For that I sincerely do apologize.

That said, we are shipping mufflers, about 4-5/week.

Jamie@dundonmotorsports

We just started testing our 2.5" Valved GT3 Muffler system. Tested without cats, our race headers with a Ti GT3 Center (all the Orange and Black mufflers are either on cars, in boxes or on the bench being welded!). Initial thoughts are it's louder than the GT4 exhaust, has more over all volume with the valves closed, not loud, but you can tell the car is there. Car has a more "GT3" sound to it. Is quiet cruising at 2500 rpm plus. A little more volume to the exhaust up to 2500, but not droning...

Over the next few weeks we will be testing on the dyno, with further street testing. Also will test with Cats and with the Orange Muffler (Quiet) which may be the ideal setup!

Jamie

ajw45

+1 I was at the tail end of the group buy and things took a little bit longer than expected but everything turned out great! GBs always just take a while but I think there's an understanding we are trading time, pre-paying, and ordering in bulk in exchange for a decent discount.

Sweet, thanks for the details Jamie! I always just hit the PSE button when driving off but once I get settled on the highway, it's nice to be able to close the valves and almost be able to hear the radio over the tire roar and road noise, maybe even take a phone call. If you're doing a bunch of testing I'd be interested in the no cat race header plus orange muffler option

O5C4R

to_riffic_day

Well, I ordered the TPC Racing conversion kit. So give it about a month until I get the GT3 muffler on and I'll be able to share the before and after sounds.

To make things interesting,

I'll have 3 audio clips.
-Stock exhaust, CG Race headers
-GT3 Steel muffler, CG Race headers
-GT3 RS Titanium muffler, CG Race headers

I'll leave the decision of what you guys/gals want to go with afterwards.

ajw45

Sweet! I ordered the kit too. Will also do pre and post dynos...

to_riffic_day

Titanium muffler or steel?

ajw45

Titanium cause ... Titanium....