Borla drone eliminated in 20 minutes for 20 bucks
06-14-17, 12:52 PM
#63
I finally got around to installing these in my ISS DES Magnaflow mufflers (1 per muffler - in the lower tip), and they do make a big difference in the drone. It is still there, but is greatly reduced. On my setup it really subdues the very low frequency drone I used to get in a higher gear around +/- 1,500 -2,000 rpms. I didn't do any db measurements, but with these silencers, I think the drone is even more reduced than it was by my side-branch resonators. Did some test runs too, and if I am losing any power with these, it's not enough to register on my butt dyno. Cheap fix for drone, and easily reversible. Thanks for this, OP - couldn't be happier.
07-04-17, 09:13 PM
#65
Driver School Candidate
Can someone comment what type of drill bit they used? Any plain old drill bit would do?
I may plan to video before and after sound of these if there's a noticeable difference
I may plan to video before and after sound of these if there's a noticeable difference
07-05-17, 11:20 AM
#67
Driver School Candidate
07-05-17, 05:37 PM
#68
Driver School Candidate
Join Date: Jul 2012
Location: NC
Posts: 7
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Have any of you tried to place a foam insert in the trunk behind the rear seat? This would effectively reduce the sound inside the car (since beneath the trunk is where much of the sound is coming from) but won't reduce the lovely borla sound outside the car. I did this with a temporary set-up shortly after installing my borla catback (which I'm selling btw) and it definitely reduces the sound inside the vehicle. I never bothered to make a permanent foam cut out because the sound grew on me
07-12-17, 02:36 PM
#69
Driver School Candidate
Have any of you tried to place a foam insert in the trunk behind the rear seat? This would effectively reduce the sound inside the car (since beneath the trunk is where much of the sound is coming from) but won't reduce the lovely borla sound outside the car. I did this with a temporary set-up shortly after installing my borla catback (which I'm selling btw) and it definitely reduces the sound inside the vehicle. I never bothered to make a permanent foam cut out because the sound grew on me
I have since swapped back to OEM and the car drives like silent luxury dream in comparison.
07-15-17, 04:54 PM
#70
Driver School Candidate
This really does work! Although like everyone has said, it really mutes the noise. I hear more of my intake than exhaust when Im pushing hard. Next step is to remove them and remove the smaller inner insert to see if there's a difference.
Caution about the install, do not over tighten the screw! I stripped mine, but I'm hoping it stays put cause it's quite snug in there.
Caution about the install, do not over tighten the screw! I stripped mine, but I'm hoping it stays put cause it's quite snug in there.
07-16-17, 07:46 AM
#71
This really does work! Although like everyone has said, it really mutes the noise. I hear more of my intake than exhaust when Im pushing hard. Next step is to remove them and remove the smaller inner insert to see if there's a difference.
Caution about the install, do not over tighten the screw! I stripped mine, but I'm hoping it stays put cause it's quite snug in there.
Caution about the install, do not over tighten the screw! I stripped mine, but I'm hoping it stays put cause it's quite snug in there.
-Mike
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Heyitzkhan (05-23-20)
07-16-17, 01:26 PM
#72
I may have to try it without the end caps. I have had the silencers on for several months now. I just removed the silencers completely... haven't done so since we installed my headers. Without the silencers, the car seemed to breath a lot better... certainly sounds meaner. Makes me wonder how much back pressure they are creating??
07-18-17, 01:02 PM
#73
So from what I've read on other car forums, exhaust silencers will cause HP loss, it varies a lot and we can only really be sure if someone dynos with and without the silencer. Aside from that, people say that they get more torque down low but feel like there is less power in the top end of the rpms. Does anyone have a clip of how their car sounds with and without the silencer by any chance?
