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AZ18yote
Well-Known Member
With all else stock you're just swapping one resonator for another. Minimal change in sound. Why not leave it stock if you want a resonator or drop it for an H or X ?Has anyone tried the Borla 60661 resonator on a stock 2018+ GT with a factory active exhaust system? Looking for sound clips.
frestylmotox01
Well-Known Member
I’m actually curious about this to, wondering if anybody had tried it yet, would like just a little more volume but otherwise happy with the oem setup.
OP
OP
cib24
Well-Known Member
- Thread starter
- #4
I got the idea from the gen 3 coyote Dyno numbers thread where the above user implied that the bulk of the gains in the exhaust system besides removing the cats, come from replacing the mid pipe. However, I'm not looking for an unresonated mid pipe as that would be too loud. According to this user the Borla 60661 resonator flows significantly better than the stock mid pipe, it is materially lighter than the stock unit, and it's not expensive to buy.As a bit of a side note here ... I recently did a before/after test w/a Borla exhaust system (140745) on my 2019 GT. While the system comes w/the X-pipe, I did not care for the upper RPM sound so I installed the Borla resonator (60661) before taking the 2nd reading. With the OE system, the best reading was 426 HP. With the Borla + resonator, the best reading was 443 hp. The published figures are all over the place regarding the exact HP loss w/the resonator v. the X-pipe, but it's safe to say that I did sacrifice some HP by opting out of the X-pipe. In hindsight, I learned two (2) things: 1) the 2019 OE system is pretty darn good w/the major 'drawback' (in terms of HP) being the pre-muffler, not the rear mufflers & 2) if I knew then what I know now, I would have merely replaced the OE pre-muffler w/the Borla resonator (60661).
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GregO
Well-Known Member
You’ll like the 60661.
It has an internal H-style crossover.
Just be aware it’s not a true 3.00” through design.
Factory connect @ 2.25”
Internal perforated 2.50”
Outlet connections 3.00” (expanded to slip over 3.00” O.D. tubing.
Jjmoberg
Well-Known Member
I have the same goal as the OP. I am going the Steeda H pipe route with 2 Vibrant bullet resonators welded in. At least I think thats the plan. Im gonna install the h pipe first and see how I like it.
Tycoon
Active Member
I was thinking to get the below for my Kooks catback install. I'm not using the H-pipe since I want a resonator. The stock resonator is packed. It think the below might not have packing. If the 60661 has packing and the below doesn't, I'm going to try to use the 60661. My Kooks catback pipes are 3" so 60661 is probably better!
https://accessories.ford.com/2015-2...777986!!20643481100!157311292289&gad_source=1
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