The OEM resonator was removed with the OEM exhaust and wasn't replaced. No cabin or V4 drone as far as I can tell. The only part from the Borla kit I kept on there was the new flappy valve cylinder deactivation section that leads into the exhaust, so maybe that new design helps with the V4 drone? Actually is that part on the left leading into the valve a resonator of some sort? That is still on the truck.
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The GM Borla definitely had more cabin "rumble" as well, IMO, that I didn't particularly enjoy. I should add that I'm 50 now, and 20 year old me would have definitely wanted MOAR LOUDER, so I see where all those guys are coming from! It's just now I don't feel the need to wake up all the neighbors. I also had a 2002 Tahoe with a Flowmaster 70 on it that was also plenty loud for me. Obviously, it looks like the materials quality of the Borla appear to be a bit more upscale compared to the Magnaflow, but overall for the price of the Magnaflow I will let that slide.
I had the 5.3 GM Borla (Part No. 19303331) installed by the Dealer on my new at the time 18 Silverado (because I was dumb and felt like wasting $1,500). It was actually LOUDER than I wanted, and sold it on Craigslist for $400 and then had a simple Magnaflow 12589 installed for another $420 that is absolutely perfect sounding to me and is a nice sounding upgrade over stock. I think it's mostly the cost of the GM Borla that is crazy, the louder sound is exactly what a lot of folks want (but I didn't). I thought it sounded exactly like the Borla videos as well.
KeyserSoze replied to Yondu's topic in 2014 - 2018 Chevy Silverado & GMC SierraI'm pretty sure mine are filled with spiders already. Someone should make some caps for these for sure.
Yeah, the pics in this thread definitely show the blue-green tint to the 2018 Graphite color. It's even more obvious next to other actually grey cars like my neighbors 2015 Silverado in Tungsten or even my BMW 535 in Dark Graphite. This new Graphite seems to be a darker Blue Granite in many respects, at least to my eye. Overall, I am very happy with the color (although I probably would have chosen the silver if I was ordering.) My 2018 Silverado in Graphite My BMW in Dark Graphite (which is very close to the 2015 Tungsten)
You can see some pics on their website. You have a choice of mounts which you slip into the gaps in the trim and then depending on your phone size you choose a device holder. In my case I have the Angled Dash Mount (for the right side). It comes with 3m double sided tape, but it holds fine without it and I've never felt the need to actually use it in any of my cars going 10+ years back. https://www.proclipusa.com/vehicle/dashboard-mounts/9734-chevrolet-silverado-1500-series/2018
I am really liking the Magnaflow 12589 I had installed. It has the stock OEM look and is about a 10% increase in volume with no added cabin noise. It's very mild compared to most of the options suggested here, but it's a nice upgrade over stock, IMO and under $500 installed. Most muffler shops nowadays will have matte black tips too.
I wasn't a fan of how far down from the bumper it ended up being like a 70's hot rod, obviously made worse by my choice to not buy the huge 4" Borla tips. The kit was built imo for GM techs to slap it in with minimal effort and then just hide the jankiness of the routing with a huge tip on the 2.25" pipes. There really was no way for the custom exhaust shop to adjust it either without replacing the pipes either as there was nowhere to adjust them to. Lastly, it did turn out to be louder than I wanted, so at that point what's another $400 for a nice, boring, modest sounding Magnaflow 12589 with a single oem type exit when I've already spent $1500? So now I'm back to a stock look, it sounds great though with a nice moderate increase. you can see in the installation guide how the 4" tips would work
Yeah, I'm turning 50 in a month and although I like the sound of the Borla, I would actually prefer a bit more stealthy sound most of the time. Get off my lawn! Stock was way too quiet though! It turns out there is no easy solution to addressing the Borla GM Performance dual rear exit exhaust and "taildragger" look due to how the existing system is configured. Even trying to move it up a few inches would require significant modification and cutting. I'm most likely just going to have the muffler shop unclamp the Borla past the flapper falve portion (and leave it installed) and install a 22" Magnaflow #12589 (3"/3") or equivalent along with a single side stock type exhaust with the 3" 6.2 Polished tip. I then would then sell the Borla on Ebay and take whatever I could get. Oh well. Note to all considering the GM Performance Exhaust: definitely get the dual SIDE exit version not the REAR. I had the Magnaflow 12589 and stock styled single 3" chrome tip installed today and it's perfect, soundwise, for me. About 15% louder than stock but a nice rumble when you get on it. I kept the flapper valve and forward parts from the Borla kit installed (since I didn't keep the oem exhaust) . If anyone in the Sacramento, CA area is interested in the Borla at a great price and who can deal with having it re-configured to look better, PM me. Just adding the very large 4" Borla tips and removing the 3" tips I had installed would help a lot.
It doesn't appear that the Chevy dealership did anything wrong with the hangers on the Borla Touring "GM Performance" exhaust. The muffler shop guys said likewise since I asked them to see if there was an easy fix. I think the issue was that since I was going with 3" instead of 4" tips like the Borla, the gap from the bumper is exaggerated even more. I'll probably pay the extra in the future just to have them re-route the rear section of pipes into a single OEM look side exhaust somehow. sort of has that 1970's exhaust look to me (I'm old lol) definitely the new version with the box instead of bypass.....
I also had the overpriced GM Borla dual rear exit exhaust installed on my 2018 SIlverado 5.3. It is significantly - but not obnoxiously - louder than stock and plenty loud for me. You definitely know it is there at all times. My only gripe would be that the rear pipes of this set hang down much too far, especially since I went with muffler shop 3" tips instead of the more expensive larger 4" Borla tips. Apparently it will void the warranty if I have the shop move the pipes up, but I'll probably have that done soon regardless.
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