DR.S

Which exact exhaust configuration issued the drone between 1500-3000 rpm ?

user1029

I will try the Soul performance exhaust for 2.5” diameter with advertised little to no drone

Snowy999

All GT3 centre exhausts drone on GT4 with race headers I understand. Mine does between c 2-3k and is quite intrusive. Solution is either use ight throttle or change down....change down always the answer. I understand the Dundon quiet drones too - but have not heard it, I am running a titanium GT3 RS, with cats, and the Dundon will be quieter I expect. I would be interested in hearing a non-droning exhaust option but am very happy with the performance of my car and happy to work around the noise!

DR.S

I wonder if a different over axle pipe design would resolve the drone issue.

burnergt4

This was just a cat back installation with everything else remaining stock.

Yeah same here on the interest in a non-drone option. The extra power is very noticable (and in tunnels the sound is intoxicating!), so for the gains you get it's great that you've been able to work through it! I'm getting the DeMan 4.5L installed with race headers, so I'll have to put the GT3 center back on at some point to see if the extra flow does anything to mitigate the exhaust resonance.

ajw45

Cruise control. Lots of cruise control

benben01

My GT3 RS Ti muffler is collecting dust if anyone is looking for one

colnagoG60

If someone hadn't gone and "Made Taxes Great Again", I'd scoop it up...local too? GL w/sale!

benben01

Yup yup.. local here in Moco.. Just collecting dust and haven't gotten around to posting it.

Dan Heiman

I’m interested in how the runners have worked out for you and what type of gains and performance you’ve experienced? I have a modded out 981 S track car and was considering these. Thanks in advance!

benben01

Runners are working well. No issues with them and they do add some new found power from 3K to til redline. As some point when I get around to it, I do want a pro tune on it as I think the DMS tune has some more room to optimize.

gman3280

Anyone install these on a 987.2?

Jamie@dundonmotorsports

Check out the MotoIQ article on them

https://motoiq.com/project-987-2-cay...he-gt4-part-3/