I did the H-Pipe swap, makes the car sound better but in higher rpms still seems quiet. Looking for some axle backs, not sure which to get. I had Roush on the 16 GT but might want to try something different. When I did the H-Pipe swap it had some drone and almost you can "feel" it lol. GL
Yeah my wife has a 2021 GT also and she is looking into Borla. Funny story when she got hers and didn't let me drive it. I said fine I will just get my own. My 16 GT was in the shop for check engine and backfiring then researched it could be that cyl 8 issue. Traded it in and got this beauty...
I just installed a Steeda H-pipe on with factory mufflers and I feel like this will tie me over till I figure out what exhaust I would like. I think this would be a cheaper solution for what mild increase you are looking for. Sounds a little drone in the car but almost as loud as my 2016 GT...
I only have about 650mile on this 2021 GT and I feel the shifting down is rough, I guess the rev match. In about 1/2 WOT shifts are great, coming to a stop in D mode can be rough, less than S mode. hmm I searched and found this thread so curious.
Edit: Never had rough shifting in D, S+ or...