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Whos got a magnaflow muffler on 2.5 custom tubing?

Clint Beastwood

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#21
Nobody is telling you what to run on your car. We’re just saying that you’re incorrect about any DP being a supporting mod for a hybrid. Save your money for a mod that makes a difference.
Yeah that was pretty much the gist. Modern cats flow absurdly well, probably better than the "high flow" ones I used to buy in the 90's
 


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#22
Fine, any kind downpipe is unneeded. I'm going to put one on anyways in my attempt to make peak power considering I'm not 100 percent sure what turbo I'm going to run and it's less then $200 for a quality one.

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jeffreylyon

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#23
Fine, any kind downpipe is unneeded. I'm going to put one on anyways in my attempt to make peak power considering I'm not 100 percent sure what turbo I'm going to run and it's less then $200 for a quality one.

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Well, then, you definitely don’t want to buy a DP now; the hot ticket for a big turbo is a tubular manifold with a custom DP and a screamer pipe. Wait until you figure out what turbo you want and buy the right supporting mods afterwards.
 


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#24
Well, then, you definitely don’t want to buy a DP now; the hot ticket for a big turbo is a tubular manifold with a custom DP and a screamer pipe. Wait until you figure out what turbo you want and buy the right supporting mods afterwards.
I'm going to be stage 3 until at least the spring, so I'll be running my loud stinky catless until at least then. Thanks for the advice

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Clint Beastwood

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#26
Fine, any kind downpipe is unneeded. I'm going to put one on anyways in my attempt to make peak power considering I'm not 100 percent sure what turbo I'm going to run and it's less then $200 for a quality one.

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If you're having drone issues now, once you go catless it's going to get pretty bad - you'll also now have to deal with all the high frequency noises the current cat stops. Those high frequency noises are what make cheap rice rockets sound all buzzy - that's exactly the use-case for the Vibrant Ultra Quiet resonator, is curing that buzzing/etc. If you're dead set on getting a downpipe, it'll sound a little less harsh with a catted one.

I'm not super environmentally conscious (to the point where I try to impose my will on others), but auto enthusiasts are a much maligned demographic already, and driving around smelling like raw gas and crackling and stuff reflects poorly on all enthusiasts and only gives the anti-car tree hugger crowd more ammo to work with. Just a thought - personally I try to avoid drawing attention to me and what I'm doing most of the time but I recognize that is not everyone's way.
 


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#27
If you're having drone issues now, once you go catless it's going to get pretty bad - you'll also now have to deal with all the high frequency noises the current cat stops. Those high frequency noises are what make cheap rice rockets sound all buzzy - that's exactly the use-case for the Vibrant Ultra Quiet resonator, is curing that buzzing/etc. If you're dead set on getting a downpipe, it'll sound a little less harsh with a catted one.

I'm not super environmentally conscious (to the point where I try to impose my will on others), but auto enthusiasts are a much maligned demographic already, and driving around smelling like raw gas and crackling and stuff reflects poorly on all enthusiasts and only gives the anti-car tree hugger crowd more ammo to work with. Just a thought - personally I try to avoid drawing attention to me and what I'm doing most of the time but I recognize that is not everyone's way.
I completely agree with you on crackle tunes and decatted straight pipe exhausts, they sound like curdled ass and are obnoxious. The issue is that I like some of the sounds the catless gives, but dont want the drone and rasp of a straight pipe or exhaust with no resonators. There must be a compromise where you can get the best of both worlds. Properly tuned exhausts sound great. I run a 2 1/4 exhaust with a Vibrant street series muffler, cherrybomb resonator and no cat on my Swift GTi. Along with the big camshafts the noise that car produces is beautiful and I've had multiple people compliment me on how it sounds, it doesn't sound like a fart canned civic in the slightest. A car can be moderately loud and still sound good, it all depends on the quality and choice of components used. I bet a decatted Fiesta ST with a high quality vibrant muffler and resonator would sound awesome, but wouldn't be obnoxious. I'll post a clip when it's all finished .

There's also a difference between regular drone, and eardrum popping resonance. I've had modified loud cars for years and I'm used to them, but the Fiesta ST produces something awful around the 3k mark. Even the infamously loud MZR 2.0 MX5 I had didn't produce anything like this.

If you want a slightly louder than stock car then yeah, a catless is a bad choice. Different strokes for different folks.

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Clint Beastwood

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#28
I completely agree with you on crackle tunes and decatted straight pipe exhausts, they sound like curdled ass and are obnoxious. The issue is that I like some of the sounds the catless gives, but dont want the drone and rasp of a straight pipe or exhaust with no resonators. There must be a compromise where you can get the best of both worlds. Properly tuned exhausts sound great. I run a 2 1/4 exhaust with a Vibrant street series muffler, cherrybomb resonator and no cat on my Swift GTi. Along with the big camshafts the noise that car produces is beautiful and I've had multiple people compliment me on how it sounds, it doesn't sound like a fart canned civic in the slightest. A car can be moderately loud and still sound good, it all depends on the quality and choice of components used. I bet a decatted Fiesta ST with a high quality vibrant muffler and resonator would sound awesome, but wouldn't be obnoxious. I'll post a clip when it's all finished .

There's also a difference between regular drone, and eardrum popping resonance. I've had modified loud cars for years and I'm used to them, but the Fiesta ST produces something awful around the 3k mark. Even the infamously loud MZR 2.0 MX5 I had didn't produce anything like this.

If you want a slightly louder than stock car then yeah, a catless is a bad choice. Different strokes for different folks.

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The problem is probably that there's only one actual "tuned" exhaust for the FiST (the thermal), and there's a lack of room under the car to accommodate a normal quarter-wave chamber - but even then, everything is tuned for the frequencies from the stock cat - going catless screws up all the tuning by introducing new secondary frequencies. Personally, I love doing the acoustic research and math to design new systems but I'll probably eventually just buy a thermal. As-is I have 3 different t304 stainless FiST systems that I built sitting in my garage taking up space lol.

If the car was like 50% bigger (lol) or had twice as much space available in the muffler-well, you could fit two quarter wave chambers in there and knock out almost all of the obnoxious frequencies. That being said, if you go 2.25" mandrel bent, or 3" without mandrel bends you can prevent some of the wave propagation that makes 3" exhaust drone on the FiST.
 


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