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sspfox
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Mine just turned 1,000miles and I definitely notice that it is slightly louder but definitely more raspy now with snap crackle popping during decelleration. I was dead set on getting an exhaust at first but I might just save the money for FI.
BmacIL
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Resonator delete is a great (and very inexpensive) way to get enough volume that you can actually hear the exhaust while driving.
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SpeedLu
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Many mechanical systems change harmonics over time as their parts experience initial wear and eventually settle into an equilibrium. My Roush axle backs sound deeper now than when I installed them; I suspect they "broke in."
BmacIL
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And then when the tad more isn't enough anymore.... Axleback.
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Yes, over time, the exhaust will "season" as it heat cycles. There are lots of great aftermarket systems out there, but the stock set-up for me has been acceptable after the sound change. It's gotten a bit deeper in tone and louder in volume. I have 24,000 miles now on it.
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Stripes
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The only time my mustang got louder was when I chopped the resonator off for an H-Pipe. I had the Roush Aclebacks installed from the dealer.
Best decision I ever made.
Best decision I ever made.
Mu5tang
Active Member
I've notice everytime I get back from a long trip (600-700 miles each way) the stock exhaust seems to get louder. Before my last trip I took my coworkers advice and installed a cold air intake (roush) and now it feels like it doesn't have as much back pressure as it used to (when you let of the gas pedal it doesn't nose dive to slow down as it normally did before)and extremely louder with a lot of burble as mentioned. I'm actually very curious why it started to feel like that(on my way out and throughout the drive in that city it felt normal(nose dived when letting off). Through out the whole trip rpms stayed at 2-3k rpms, but on my way back 20 mins before I made it to the state I started to hold the rpms higher then normal and it pretty much made me think that's what caused the freeness of the exhaust. The high temps. and excessive air flow some how frees the cats. or even something with in the system.
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[email protected]
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funny i found this thread, 7k miles on mine and just the other day i noticed it seemed deeper and louder, subtle but noticeable. thought it was just a fluke, but when i remote started it the next day it sounded like it was much louder like in the garage lol. its definitely more noticeable now but its a good change. but ive noticed this before on other cars. my 99xj with magnaflow went from just ok to really nice after a few k miles. my 03 cooper s with invidia went from perfect to horrible drone on the highway, but with delightful popping under deceleration. like others said exhausts do seem to break in for better or worse.
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