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Old 01-01-2014, 01:10 PM   #1
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Exhaust newb

Alright so I'm a little confused and I know ppl on here can help me out. I have a 2014GT premium. I want to put a Kooks exhaust on her. Here's where I'm confused. I'm gunna skip out on the headers for now simply cuz I don't have the money right now but want and need to change the sound of the car. My dad has a full Kooks exhaust on his 05GT and the sound is perfect. Iv seen online a cat back exhaust setup and a H pipe and or X pipe with axle backs set up. My question is what is the best approach for the best money here. Going with a H/X pipe and axle backs or just getting a full cat back exhaust. Thanks for the help.
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Old 01-01-2014, 01:19 PM   #2
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IMHO save up for a full 3' kooks exhaust system. Another option is to get kooks headers & x pipe then buy the rest later . You then get some sound and performance gains with a tune.
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Old 01-01-2014, 02:36 PM   #3
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It isn't going to sound like the 4.6, be aware of that. This engine's note is not what most people are expecting out of an American V8 and when they try to get that sound the exhaust gets too loud up top, in my view.

If you have big plans, save up and do it right and do it once. Kooks is fantastically expensive but good quality stuff. You definitely want a tune to do anything other than an cat back or axle back. Even a catback is pushing it untuned, imho.
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Old 01-01-2014, 02:40 PM   #4
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Alright so I understand the best way to do this is to just wait till I can afford headers and don't get me wrong I'm going to do them, but if I were to do it now like I stated in my original question which would be the best
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Old 01-01-2014, 02:43 PM   #5
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Yer going to do it now and thus, do it twice...ok, it's your money and time. Do a catback with an H pipe and you'll probably get closest to what you're looking for.
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Old 01-01-2014, 02:50 PM   #6
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Well I agree with you as far as time but how would it cost me more money of all I would need is headers?
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Old 01-01-2014, 03:01 PM   #7
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Someone will have to retune your car for headers for sure. You simply can't bolt anything more than a catback onto the stock tune on this car. My view is even with a catback you're leaving something on the table running the stock tune.

Headers are a super-***** of a job on this car. Doing it all at once, you may be able to swing a lower install cost if you aren't doing it yourself. Exhaust is always fun when done in bits. The bits in take a set and then it's a pain to get future added bits to line up right.
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Old 01-01-2014, 03:09 PM   #8
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True true I can't completely understand what you saying and I appreciate the help. I will be doing the instal myself and but I'm so annoyed with the stock sound quality of the car which is why I am in such a rush to change it
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Old 01-01-2014, 03:13 PM   #9
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Well, it's the mufflers that really determine the sound so, pick one that sounds good to you. The rest will just raise the volume, for the most part, as long as you stick with an H pipe up front.

I found GT500s alone were enough for me. I've had more than my share of loud cars in 30 years in this hobby and this car is my DD.

I'm glad you're doing it yourself. Warms this auto shop teacher's heart to hear that.
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Old 01-01-2014, 03:18 PM   #10
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Hah yeah my dad did all his on his own so he obviously will be helping but I'm excited to get it started. Thanks again for the advice. Once last thing, if I got an H pipe and axles backs, both kooks of course how would that set up be?
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Old 01-01-2014, 03:30 PM   #11
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I assume you mean ditching the Kook's over axle pipes and using the stock stuff there. Couldn't tell you from personal experience but, I think it'd be the choice I'd make if I was seeking what you say you want, sound wise. It'll be a little quieter and more mellow sounding with the resos still in but, pulenty loud, I think.

Other than the axlebacks, the OTA pipes give the least performance gain. The header and H/X (plus the tune for them) is where 99% of the gain is on this car. As long as everything will bolt up ok, you could save a buck or two there.
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Old 01-01-2014, 03:38 PM   #12
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Quote:
Originally Posted by 5LHO View Post
Even a catback is pushing it untuned, imho.
A catback does not require a tune.


Kooks make great products. I run their catback and the tone is perfect to me.
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Old 01-01-2014, 03:45 PM   #13
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I'm aware of that but, I think it would still benefit from one, as I said, especially if you really loosen things up downstream.
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Old 01-01-2014, 03:48 PM   #14
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I'm aware of that but, I think it would still benefit from one, as I said, especially if you really loosen things up downstream.
There is no benefit in tuning for a catback. You'll benefit from a tune but it has zero to do with removing resonators or changing mufflers.
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Old 01-01-2014, 03:53 PM   #15
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Ok, see what I'm saying here: Stock tune, emissions legal, generally crap fuel economy setup, throttle lag, rev hang and other issues well known to be present in the factory tune.

You loosen up the exhaust some and what happens? These well known things don't get better. Do you need a specific tune for a catback? No. However, a good tune will react better than the stock one to the exhaust bits you just added.
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Old 01-01-2014, 04:13 PM   #16
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So what you saying is if I run axle backs and keep my stock over the axles with an H/X pipe that would be a pretty good set up for saving a couple bucks and getting some sound?
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Old 01-01-2014, 04:24 PM   #17
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Yeah, no doubt.
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Old 01-01-2014, 04:55 PM   #18
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Perfect, cool thank you everyone for the help.
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Old 01-01-2014, 05:15 PM   #19
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On last suggestion: if you're going to buy in pieces, why not just buy the axlebacks first and see how you feel about it? That may be enough to satisfy, at least in the short run. You'll probably get a better deal if you buy the complete kit but keeripes, near on to $3000 for a full Kook's kit is pretty dear for some exhaust pipes.
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Old 01-01-2014, 05:53 PM   #20
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Very true, I'm going to get some axle backs and see how I feel about them which will give me more time to save and decide if the sound is for me (which I would assume it will be since I love my dads). Then I'll move on to the H pipe and some headers.
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Old 01-01-2014, 06:00 PM   #21
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Old 01-01-2014, 06:02 PM   #22
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Wouldn't a cat back vs just axle backs give a different sound? Also wouldn't headers add sound too?
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Old 01-01-2014, 06:07 PM   #23
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Wouldn't a cat back vs just axle backs give a different sound? Also wouldn't headers add sound too?
A catback will be louder than the axleback when you remove the resonators. Headers will change the sound but not necessarily make it louder.
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Old 01-01-2014, 06:09 PM   #24
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If you like the axleback sound, you'll likely enjoy the added volume from the other parts....
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Old 01-01-2014, 06:45 PM   #25
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Alright finally I think I'm starting to understand all this lol, gunna go with the axles backs and hope that sound is good for me
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Old 01-01-2014, 06:53 PM   #26
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<<< this guy has some kooks in stock
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Old 01-01-2014, 06:53 PM   #27
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I know you pm'd me with you site how long is the sale running?
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Old 01-01-2014, 10:50 PM   #28
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If you don't like your Axlebacks you can always delete the resonator with straight pipe or change out the factory h pipe to change the sound and find more hp/torque and still pass emissions...
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Old 01-02-2014, 04:12 AM   #29
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Well my next question was I know in the end I'll be spending more money but if i get the H pipe and axle backs then decide I want to rid of the resonators do they sell that over the axle pipe that will just bolt right up to the H pipe and axle backs?
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Old 01-02-2014, 04:57 AM   #30
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Well my next question was I know in the end I'll be spending more money but if i get the H pipe and axle backs then decide I want to rid of the resonators do they sell that over the axle pipe that will just bolt right up to the H pipe and axle backs?
Yes there are companies that make the pipes that go over the axles. Kooks could sell them to you to mate up to their axlebacks if you wanted. Which H pipe were you thinking of using since your car already has one from the factory?
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Old 01-02-2014, 06:15 AM   #31
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I'm gunna go with the kooks H pipe catted due to emissions. I'm assuming it's going to be more free flowing and a bit bigger then the stock one
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Old 01-02-2014, 01:11 PM   #32
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I'm trying to get as close to the 03 cobra sounds as possible. What would be the best setup or is it even possible to get that sound.
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Old 01-02-2014, 01:35 PM   #33
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I love that sound of the termis too. I also like the old 5.0 sounds. I don't know if we can get that sound or not. I know the dohc Is a lot different than the old 5.0 and the revs are much quicker and they fall a lot quicker too, so that will change the sound. I have been going crazy looking for exhaust, there are so many choices.
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Old 01-02-2014, 03:14 PM   #34
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I'm gunna go with the kooks H pipe catted due to emissions. I'm assuming it's going to be more free flowing and a bit bigger then the stock one
You mean the one they use with their mid length/longtube headers? That won't work with your current setup unless you have it modified.
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I'm trying to get as close to the 03 cobra sounds as possible. What would be the best setup or is it even possible to get that sound.
Not gonna happen. The 03-04 Cobra uses a mid muffler system unlike these cars that mount the mufflers in the rear. Plus it's a totally different engine.
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Old 01-02-2014, 04:17 PM   #35
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Ok so your saying with stock headers I couldn't just bolt up an H pipe?
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