- Jul 26, 2025
- 2,225
- 4,058
- '25 F350 XLT Tremor 7.3 Guzziller Carbonized Grey
- '16 F150 5.0 Coyote/6R80 SuperCrew
If I tow 10K at 65-70 I can get very slight drone but that’s only on uphills and when I’m below 2,000RPM.
Yep. Very slight, but more than that is the additional volume that puts a smile on my face. This is an excellent system!
If I’m unloaded there isn’t any drone on the highway.
Yep! My OEM Goodyears are more noticeable, yet I can hear what the engine is doing whereas before I had to guess if I did not look at the tach.
Exhaust noise has never bothered my wife or toddler when we take my truck places. The exhaust doesn’t get really noticeable unless you tip into the throttle a good bit. It’s definitely louder than stock but nothing like some of the 5.0 Mustangs and clapped out GM 1500s with no cats I see driving around. My Mickey Thompson Baja Boss ATs with ~20K miles on them are louder than the exhaust on the highway. It’s the perfect gentleman’s/daily driver exhaust IMO.
I agree 100% with this review.
Now, remember this: There is a mid-pipe in the S-Type Borla, a 22" piece of 3.5" diameter stainless that slips between the first resonator and the main muffler... if, as time goes by I find I would like an even-more-quiet system I have a 3.5 Borla XR-1 racing muffler (a resonator, really), that is 20" long. I will have a few inches welded onto the XR-1 and then install that before the main muffler. This is not yet needed, and it may never be, but since I like to faff about with stuff like this I'll get to it eventually and it will be removable as well. win/win.
