GT Performance Mods 2005+ Mustang GT Performance and Technical Information

My quest for THE sound....

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Old 6/15/06 | 10:47 PM
  #21  
Hartman's Avatar
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Originally Posted by don_w
I have often referred to it as a cropduster...
Haha, when i had my X and SLP LMs on my car, everyone referred to it as my cigarette boat. And yeah, it trumpeted and sounded like poo at that certain RPM, but otherwise it was fun to have it that loud for a while.
Old 6/16/06 | 01:13 PM
  #22  
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Originally Posted by Mydnyghte
WERKED, the absolute meanest sound I have found so far was with the catless Bassani X, and MAC axlebacks. That sound was wickedly mean. A good mean. But it got soo tinny, because the MACs are chambered, up in the higher rpms, it totally canceled out the meanness. So long as I stayed in the low rpms, it was like riding a pack of ravenous wolves

I got an email today stating that the Violators I ordered will not be in stock until the 2nd week in July. So since I have some time, I think I am going to try those Hooker tips with the resonators built in.

On another note, I figured out what I could compare the sound to: a low flying airplane. At certain rpms though...
well i have been hitting the show car circuits and imy head is spinning from all the great exhaust sounds........sunday i was at english town and from there all the way home i had to listen to this 03 cobra with excellent exhaust tone all the way home...then wednesday i heard this mach 1 that also sounded great...and yesterday i hear slp.... magnaflow...pypes off-road h..............i just don`t know what to do.........with out going broke......will see if i see anything good tonight......
Old 6/17/06 | 02:41 AM
  #23  
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Just curious, what would cutouts with stock headers sound like? (cutouts before the Cats, if thats possible on these cars). Anyone tried that? I had cutouts with shorty edelbrock headers on my old camaro, I loved it. Would a stock header GT sound horrible? (for cruising around only, I imagine alot of power would be lost if running open like that at a drag?)

I love the sound of my stock exhaust + flowmasters, (it's got some growl at mid RPM, and doesn't attract alot of attention) but there are times when I'd love to get that open header sound again (electronic butterflies are great for cutouts!)
Old 6/17/06 | 09:13 AM
  #24  
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For what it's worth, I love my JBA LT, JBA Offroad H, and yep, you guessed it, JBA mufflers. Had plenty of comments on the sound.
Old 6/17/06 | 01:26 PM
  #25  
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Originally Posted by Error404
Just curious, what would cutouts with stock headers sound like? (cutouts before the Cats, if thats possible on these cars).
I doubt it's possible... not much room in there. Plus, where do you think all the hot exhaust gas would go?




Originally Posted by Error404
but there are times when I'd love to get that open header sound again (electronic butterflies are great for cutouts!)
Amen to that... I'll have that set-up when I'm done.
Old 6/17/06 | 01:59 PM
  #26  
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Originally Posted by don_w
I doubt it's possible... not much room in there. Plus, where do you think all the hot exhaust gas would go?
Is there just not enough room inbetween the headers and the cats? (I haven't looked under my car). Where does the exhaust go? um... not quite sure what you mean. Yea if you sit there and idle for a few minutes with them open, you might get kinda loopy, haha! Where are you putting your cutouts?
Old 6/17/06 | 03:20 PM
  #27  
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Originally Posted by Error404
Is there just not enough room inbetween the headers and the cats? (I haven't looked under my car). Where does the exhaust go? um... not quite sure what you mean. Yea if you sit there and idle for a few minutes with them open, you might get kinda loopy, haha! Where are you putting your cutouts?
My point is that there is only a few inches of pipe between the manifolds and the stock cats. And if you put cutouts there, you my be dumping very hot exhaust gases on top of other parts in the engine bay. Take a look at this pic looking up at the flange on the stock manifold. You can see other lines and parts right there. I'm not sure I'd want hot gases heating all this stuff up.

I'll be putting my cutouts on my X-pipe, well past the tranny where the heat won't bother anything else.
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Old 6/23/06 | 03:38 PM
  #28  
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Latest Experiment:

Decided to try a larger tip, thinking that might take care of some of the trumpeting and the drone, as well as make it deeper. So I ordered a pair of Hooker tips, 4" with a built in resonator, and had them installed today.

Quieter than the SLPs, took care of some of the trumpeting down low, but now its a little tinny uptop. I guess I could say its a smaller trumpet I do like the larger tip, but I think the SLPs will be going back on. This was definitely one of the cheaper experiments, as I have $77 for the tips (which are very very good quality) and $50 for the welding Still waiting on the Violators....








Old 6/23/06 | 04:08 PM
  #29  
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Those tips look AWESOME!! Mydnyghte, have you got your Violators in yet? I'm interested in how those sound.
Old 6/23/06 | 09:20 PM
  #30  
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Thanks!
No, the Violators aren't scheduled to be in until the 2nd week in July So I figured I would try something between now and then just to satisfy my curiosity. Sadly, its still hungry
Old 6/23/06 | 10:01 PM
  #31  
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I wanna try some stingers on my car badly.... but I cant find any used.
Old 6/26/06 | 10:06 AM
  #32  
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Well yesterday the SLPs went back on. The Hooker tips quieted it down a LOT more than I was expecting, and that certainly is not what this journey is about However, I did trim the exhaust hanger on the drivers side a tad, I found that if I put the tip too far out, the hanger would rub the frame, and positioned the tips sticking as far out as I could. But not far enough to look stupid. What I found was that the trumpeting around 3000 rpms got pushed a little higher So now this has me wondering if either the overall length of the exhaust or how long the tip itself is has any effect on trumpeting.
Old 6/26/06 | 06:16 PM
  #33  
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Your trumpet got turned into a cornet!

Okok, bad band joke....

Does anyone have any audio clips of trumpeting? I'm now officially confused between trumpeting and drone.
Old 6/26/06 | 06:27 PM
  #34  
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Originally Posted by WarBird69
I'm now officially confused between trumpeting and drone.
Drone is an inside noise (which I didn't mind at all)... trumpeting is outside noise (which annoyed the **** out of me).

BTW, 4.10 gears will pretty much fix the drone problem.
Old 6/27/06 | 10:10 AM
  #35  
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The first thing that comes to mind when I think of "drone", it basically sounds like your car is humming, really loud, but its only on the inside.

Warbird, if you watch 94Tbirds clips, you can hear them somewhat when he opens it up.

Don are you running any type of cat? I've been playing with the idea of putting some back on if the Violators do not appease me....
Old 6/27/06 | 06:13 PM
  #36  
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Originally Posted by Mydnyghte
Don are you running any type of cat? I've been playing with the idea of putting some back on if the Violators do not appease me....
I don't plan on putting cats back on once the car is back together... having one motor grenade because of a cat is enough.
Old 6/27/06 | 10:35 PM
  #37  
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ok what does everybody think about this combo...SLP LT, SLP LM, SLP catless X
Old 6/28/06 | 12:33 AM
  #38  
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Originally Posted by RedDragon777
ok what does everybody think about this combo...SLP LT, SLP LM, SLP catless X
I think it will sound awful... major trumpeting.
Old 6/28/06 | 12:46 AM
  #39  
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i am not much of a performance guy (even though i am going to add the H.O. whipple 11psi system) since i am shooting more towards carshows than dragstrips or road courses and i want the loudest meanest sound i can find i know LMs are loud but what can i use for a midpipe and LTs
Old 6/28/06 | 12:48 AM
  #40  
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If all you want is LOUD, then go with the LTs, catless, and LMs. Hell, you might even like it.


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