Welp, uncapped the exhaust yesterday....

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extremesho

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Well guys,

yesterday I crawled under my car, 15mm socket in hand... Some of you probably already know what this means. I unbolted half of the "flex pipe" to hear the note of the 3.4 V-8's exhaust. Needless to say I was stunned at the punch that the small displacement was able to muster. It sounded as if I were under the wheel of an old muscle car without a SUPER lopey cam. It did have a bit of lope, but not nearly as much as I was used to. That all passed through my head as I just hit the key for the first time... Eyes wide, mouth opened, I stared at the friend who had assisted me. His expression was one that could easily match mine. I heard over the steady burble a faint "holy **** dude"... This comes seconds after hitting the key. As impressed and excited as I was, I waited for the test drive. We went inside the house and sat for a few minutes, and I looked at him and asked "Ya wanna ride down the street?" My friend quickly gave a short nod as he jumped up from his seat. We both took off at a speedy pace out to the car, and I jumped under the wheel. I cranked the engine to hear the roar of a V-8 under my right foot's control. I patted the accelerator as I close the door, and I felt my heart lift as I put it in reverse... The test drive was amazing -

I urge ANY V-8 owner to go out and at least try it once - yeah it's loud... MAYBE even too loud for you. BUT it's easily the most fun I've had in the car. Getting looks from every Camaro, Mustang, and ricer as I pass... Each of them surely giving a slight shudder as the sound slowly creeps away. Again, I must stress that it is loud, and your neighbors probably will not be happy with a late night trip, but this is for you, not them. If you ever wondered why you had bought the V-8 SHO, I suggest you try this out. It'll answer all of your questions.

So what should you expect???
Well, a VERY noticeable rise in the volume of sound is an obvious by-product. A deep, aggressive tone that just screams under even the slightest accelerator tap. The exhaust note seems to be the loudest at the lower rpms, mostly due to the tone that it produces. The tone does get less deep as you accelerate (just as in any car), but the tone never gets whinney, or tinny, or anything like that. It's just a steady burble of what one would least expect to see coming from a Taurus. I was honestly excited to drive my car again. Again, I must urge any able person to do this at least once to get an idea of what beast lies under the hood. The sound is a great accent to the motor that yammaha built to be a stout competitor... Because the sound is definitely there. Thank you guys that left the info up on the board, because without it, it may not have been as easy to achieve. I will give all the people who have not yet done this mod a hint. It's close to where the exhaust Y's into one pipe... Towards the front of the car rather than the rear as I had previously thought. - - Also, the transmission seems to shift out a little harder and the 1-2 shift upon light accelleration came at a later point than I had previously noted.


WARNING: Do this at your own risk, the sound that is produced could be enough to get a citation issued for "alteration of vehicle exhaust", I was am just telling you my experiences, and hope that each of you do this modification everyone in mind - don't be stupid with your new toy. :thumb:
 

Ian Macoomb

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Be thankful you live in a salt free area. I tried to unbolt my flex-pipe but there was no chance of that happening. I had to get the bolts cut off. I did that and I was hooked.

Now, I've got a Jeg's cutout with a Mccord Power Plate. It's an electric valve that allows me to by-pass the mufflers. It's great, I can open it up all the way or just a little bit depending on how much sound I want. Then with the flick of a switch I can close it up. It works great. My only complaint is that it's a little slow and they're reluctant to honour their warranty. My next cut-out will be a DMH cutout.
 

99V8SHO

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Next week I am getting a test pipe flanged up in place of my third cat, at which time I plan to do some GTech runs. One with the 3rd cat in place, one with a straight pipe in place of the third cat, and one with nothing after the y-pipe. I am excited. :dribble:
 

cartfan76

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Don't expect much to happen down low for improvements. Anything you'll see from the "Catectomy" will be up high.
 

wuzzzer

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I attempted the same thing the other day and then realized I didn't have the correct size tools for the job. :mad: That's it, I'm going on a shopping spree at Sears!
Just a question, extremesho, which end of the flex pipe did you unbolt? The side toward the front of the car or the side toward the back? How far down did the pipe hang after you unbolted it? My car is already sitting very low with my lowering springs, and I'd hate to unbolt the flex pipe and while out driving hit a bump and have the exhaust system shoved up through the floor! :eek:
And also as an FYI I remember reading somewhere (v8sho.com I think) that if you unbolt the exhaust you should disconnect the battery and reconnect it after the exhaust is unbolted so that the engine computer can adjust to the exhaust change.
 

extremesho

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To answer the question, I unbolted the side of the flex pipe closest to the rear of the car - this way I figured would be safer after looking at it and imagining hitting a curb with each of my options. I have a mm, and that really is all I needed to get the job done. The exhaust doesn't hang all that low, but I'd use descresion as to the clearence issues. I didn't unhook my battery, but it probably would not have been a bad idea now that you mention it.
 

Ian Macoomb

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Don't bother disconnecting the battery. The computer isn't going to change anything just because there is slightly less backpressure. What could it possibly do to detect a difference? And if it did what would it do?
 

f150fan

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This car sounds unreal with the exhaust unbolted!!! Wait untill you take it to a drag strip with the exhaust uncapped....you won't beleive the attention the car will get!!!
One thing, I cannot believe "Mr Anonymous" hasn't chimed in this thread yet saying how you will blow your motor by uncapping the exhaust :rofl: :bonk: :lol:
 

99V8SHO

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f150fan said:
One thing, I cannot believe "Mr Anonymous" hasn't chimed in this thread yet saying how you will blow your motor by uncapping the exhaust :rofl: :bonk: :lol:
:rolleyes: Was that necessary? :rolleyes:

And your sig pic is too big.
 

stephen newberg

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f150fan said:
One thing, I cannot believe "Mr Anonymous" hasn't chimed in this thread yet saying how you will blow your motor by uncapping the exhaust :rofl: :bonk: :lol:

<Sigh>

No, you will not blow the motor. But you will also very likely have made your car go slower. So you can be loud, slow, and get a ticket, or you can be stealthy quiet, faster, and not get a ticket. Decisions, decisions...

pax, smn
 

Ian Macoomb

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stephen newberg said:
<Sigh>

No, you will not blow the motor. But you will also very likely have made your car go slower. So you can be loud, slow, and get a ticket, or you can be stealthy quiet, faster, and not get a ticket. Decisions, decisions...

pax, smn

It doesn't make your car any slower. Mine may have even picked up half a tenth. It's really hard to tell since you can make back to back runs with this car and change nothing and be off by more than that.

By the way, I've got 5 runs in the 14's with the cut-out open and 1 in the 14's with it closed.
 

mholhut

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The best way to run a cutout on a Gen III SHO (IMHO), is to open the cutout as you're going down the strip. When I had mine, I had serious loss of low end torque... but at WOT (and especially with nitrous) it made a difference. My suggestion would be to have it open with the secondaries... You could tap into the TP sensor with a relay to bypass the cutout switch, and have it come on automatically at WOT. It would be automated and you'd have the best of both worlds.
 

stephen newberg

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I am with Mike on this one, Ian. Just uncapping it alone seems to me to make you slower under most situations.

And no longer street legal, either. I think Mike's solution is the good one.

pax, smn
 

Ian Macoomb

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I've tried that and I've found the best results by launching with it open. I've compared timeslips doing it each way and it can't see an obvious difference at any interval except the last one.
 

wuzzzer

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Anyone know the size of the nut that's on the 15mm bolt at the flex pipe? I've tried on 2 separate occasions and I can't get the stinking thing to move. I really can't wait to hear this thing scream! :rant:
 

extremesho

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Mine was 15mm I believe... Anyone have anything different? Or did I read your post wrong wuzzer? The nut that is attached to the 15mm bolt, correct? If so there is my answer
 

99V8SHO

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Mine are 17mm... But I just had exhaust work done so mine came off no problem. Try some PB Blaster and let it soak for a few hours. Should break free in no time. :thumb: Trust me, it is well worth the wait. :dribble: I uncorked it last night and could not bring myself to cap it back up. Drove around with it open all day. I will miss that sound. :( Oh well, it is only a turn of the wrench away! :thumb:
 

SHOZ123

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I went to Midas and had them put in new bolts. Then went home and took it apart.
 

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