Borla vs. stock muffler delete

SiouxFallsQX

Member
Car
2014 qx70 5.0 and 2006 FX45
Name
Justin
Coming from an FX45 which had a quiet but satisfying unique exhaust, I was devastated that Infiniti completely ruined the FX50 exhaust. For those of you that wonder what the muffler delete sounds like, it's relatively easy to unbolt only the rear muffler section and take a short drive to see what it sounds like. Those that comment on it being loud are 100% correct and most wives will not approve. The tone is surprisingly good, but just be prepared for loud.

I should have tried a resonator delete but I decided to go straight to the Borla kit. My left and right Borla pipes at the cat were mislabeled from the factory so that was fun figuring out why the pipes were hitting the underside of the car. Got that figured out and I'm finding the Borla to be pretty quiet but very deep. There was a poster here I believe that commented on it being a tad bit louder than stock and I would agree. I've read other comments on the Borla making their car sound like a beast and that is completely misleading. It sounds like what I would expect a stock tame v8 exhaust to sound like. Nice from the outside and barely noticeable inside. Way quieter than a stock exhaust on a Rustang, Corvette or any of the 6.4L Dodge products.

If you're still rolling with the stock exhaust, I highly recommend doing something as you're really missing out. Resonator delete would be a very cheap way to start and people seem to be happy with that. Custom exhaust from a specialty shop would be another great option. If I had the option to purchase again, i don't know that I would buy Borla.
 
You should've went with my setup. Ark catback + g37 testpipes. I'll try to get a sound clip. Really deep especially at low rpm but again, not too loud.
FX50EXHAUST.jpg FX50EXHAUST2.JPG
 
2 month update - people always say exhausts get louder over time and this borla has definitely opened up enough for me to eat my words. It's still very tame inside which is expected in a well insulated luxury car and outside I'd give this a rating of very good. I'm no longer disappointed.
 
The Borla is just too tame for me. It sounds like a stock exhaust. I love the 304 stainless steel piping though. Looks very good but I think this muffler has to go.
 
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