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Old 10-18-2013, 04:10 PM   #1
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Headers

I seen on another post someone said something along the lines of this


No need for cams just ported heads, boss mani, LT headers, Xpipe, intake, TB, and 93 Dyno tune. To make around 500hp


So my question is I looked for some headers and everything says not intended for street use. Are all headers that way? Or is there something I could do to keep the car street legal with headers?
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Old 10-18-2013, 04:14 PM   #2
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U need the cams for 500hp not the heads. And when they say not for street use. They are speaking about. Emissions for states such as California.

---------- Post added at 04:14 PM ---------- Previous post was at 04:12 PM ----------

Keep the cats to stay street legal.

With pump gass- full exhaust, boss mani, heads, cams, tune up to 7800+

With e85. Full exhaust, boss mani,cams,tune
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Old 10-18-2013, 04:16 PM   #3
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U need the cams for 500hp not the heads. And when they say not for street use. They are speaking about. Emissions for states such as California. ---------- Post added at 04:14 PM ---------- Previous post was at 04:12 PM ---------- Keep the cats to stay street legal. With pump gass- full exhaust, boss mani, heads, cams, tune up to 7800+ With e85. Full exhaust, boss mani,cams,tune

Can you show me an example of a FULL exhaust?
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Old 10-18-2013, 04:39 PM   #4
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Can you show me an example of a FULL exhaust?
Headers/ midpipe/ catback.
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Old 10-18-2013, 04:47 PM   #5
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Shorty headers allow u to keep the cats and longtubes delete the cats.

Shorties do almost squat even with full catback exhaust.

Longtubes delete cats and together maybe nets you about 25whp

---------- Post added at 04:47 PM ---------- Previous post was at 04:45 PM ----------

Oh and when you say 500hp u mean crank or wheel?

You just need about 425-430whp to have about 500hp.
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Old 10-18-2013, 05:26 PM   #6
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Originally Posted by DallasStang77 View Post
Shorty headers allow u to keep the cats and longtubes delete the cats.

Shorties do almost squat even with full catback exhaust.

Longtubes delete cats and together maybe nets you about 25whp

---------- Post added at 04:47 PM ---------- Previous post was at 04:45 PM ----------

Oh and when you say 500hp u mean crank or wheel?

You just need about 425-430whp to have about 500hp.
Shortys on a 5.0 wont do anything, stock manifolds are pretty much a shorty style header. Longtubes you can either run off road or still have cats. Offroadx and longtubes pretty much have the same power increase # wise on a coyote
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Old 10-18-2013, 05:42 PM   #7
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Meant to put +1 in front of my response.
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Old 10-18-2013, 06:17 PM   #8
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Can you show me an example of a FULL exhaust?
Here is what the full Bassani exhaust sounds like on my '13 GT.

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Old 10-18-2013, 06:20 PM   #9
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Shortys on a 5.0 wont do anything, stock manifolds are pretty much a shorty style header. Longtubes you can either run off road or still have cats. Offroadx and longtubes pretty much have the same power increase # wise on a coyote
Quick question. Are you saying. Either one. Long tubes........ Or an o/r xpipe pretty much have the same power # wise. Or am I reading this wrong.
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Old 10-18-2013, 06:39 PM   #10
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Here is what the full Bassani exhaust sounds like on my '13 GT.

That sounds pretty bad ***. Cats go on after the headers?

---------- Post added at 06:39 PM ---------- Previous post was at 06:37 PM ----------

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Shorty headers allow u to keep the cats and longtubes delete the cats. Shorties do almost squat even with full catback exhaust. Longtubes delete cats and together maybe nets you about 25whp ---------- Post added at 04:47 PM ---------- Previous post was at 04:45 PM ---------- Oh and when you say 500hp u mean crank or wheel? You just need about 425-430whp to have about 500hp.


I read that bit I posted on another thread but I'm sure the guy meant at the crank. And if I get long tubes I will still be street legal in Texas then right?
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Old 10-18-2013, 06:53 PM   #11
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[QUOTE=Anthony214;1831383]That sounds pretty bad ***. Cats go on after the headers?[COLOR="Silver"]

Thanks. The cats bolt on after the headers if you run them. I have cats and o/r pipes in case I want to swap them out.
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Old 10-18-2013, 07:42 PM   #12
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Quick question. Are you saying. Either one. Long tubes........ Or an o/r xpipe pretty much have the same power # wise. Or am I reading this wrong.
Yes you read it right
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Old 10-18-2013, 08:04 PM   #13
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Found this TxDPS - Cost of Inspection Read the part at the bottom for emissions testing. Everywhere else you should be fine.I was actually surprised to see any emissions in TX.
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Old 10-18-2013, 08:27 PM   #14
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Found this TxDPS - Cost of Inspection Read the part at the bottom for emissions testing. Everywhere else you should be fine.I was actually surprised to see any emissions in TX.

And of course dallas is on there. I like the set up that I first mentioned. Raptinator mentioned it in another thread and it seems legit and good on the wallet. But I want my car to be able to pass inspection too.
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Old 10-18-2013, 08:44 PM   #15
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Yes you read it right
Alright. And is there a difference in deleting the resonators and a catback exhaust. I already have gt500 axle backs. But my next investment will be o/r x and deleting my resonators. The actual catback is just increasing the size of pipe after the cats correct??
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Old 10-18-2013, 08:48 PM   #16
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Alright. And is there a difference in deleting the resonators and a catback exhaust. I already have gt500 axle backs. But my next investment will be o/r x and deleting my resonators. The actual catback is just increasing the size of pipe after the cats correct??
Yes. But the stock over axle pipes are crushed bent. The area where it goes over the axle.
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Old 10-18-2013, 09:42 PM   #17
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After having done it I would do the resonators first to see if you like the sound and volume. It will sound A lot louder without the resonators and change the sound quite a bit. Not to mention its only about $100 to have the resonators cut out (that's what I paid), and a few hundred for the CAT deletes or O/R pipe.
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Old 10-18-2013, 11:27 PM   #18
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After having done it I would do the resonators first to see if you like the sound and volume. It will sound A lot louder without the resonators and change the sound quite a bit. Not to mention its only about $100 to have the resonators cut out (that's what I paid), and a few hundred for the CAT deletes or O/R pipe.
I'm wanting the extra sound from cutting the resonators and the extra hp from the x pipe. I went from roush to gt500's. And I want to get back to that roush sound while also deleting the cats
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Old 10-19-2013, 10:59 AM   #19
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Yeah unless you go forced induction whether u get the axleback or catback there no difference really. I just get the full catback cuz I like my system whole and not frankensteined together.

Even with BAMA tune and whatnot you could probably net the same HP running the cats, resonator delete, and axle back.

The car comes with a stock h pipe which should give you a nice low growl with resonator delete and axle back.

Too many configurations and honestly the same exhaust setup on different GT sometimes for some reason sounds different than the next.

My friend has a FM Hushpower catback and for some reason mine sounds badder *** lol.... It's prob just me.
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Old 10-19-2013, 04:59 PM   #20
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Yeah unless you go forced induction whether u get the axleback or catback there no difference really. I just get the full catback cuz I like my system whole and not frankensteined together. Even with BAMA tune and whatnot you could probably net the same HP running the cats, resonator delete, and axle back. The car comes with a stock h pipe which should give you a nice low growl with resonator delete and axle back. Too many configurations and honestly the same exhaust setup on different GT sometimes for some reason sounds different than the next. My friend has a FM Hushpower catback and for some reason mine sounds badder *** lol.... It's prob just me.


H pipe or X pipe is made for different sounds correct? They both net the same hp gains if any depending on the exhaust set up?
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Old 10-19-2013, 05:40 PM   #21
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H pipe or X pipe is made for different sounds correct? They both net the same hp gains if any depending on the exhaust set up?
Hpipe nets like 2hp less but it sounds goooooood. I'll trade 2hp for my low rumble bwo bwo bwo BWO BWOOOO
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Old 10-19-2013, 05:46 PM   #22
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Seems like a fair trade off for a quality sound.
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Old 10-19-2013, 06:00 PM   #23
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I made 443rwhp today. No heads or cam. That puts me right at 500 at the crank if you figure a 12-15% drivetrain loss.
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Old 10-19-2013, 06:21 PM   #24
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I made 443rwhp today. No heads or cam. That puts me right at 500 at the crank if you figure a 12-15% drivetrain loss.
what all do you have again. And who's tune are you running. Dyno??
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Old 10-19-2013, 06:32 PM   #25
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what all do you have again. And who's tune are you running. Dyno??
American racing 1 7/8 longtubes with their off road h pipe, resonator delete, and borla s type quad tip axleback. I am running a VMP tune. I got the tune through hypermotive. Jay at hypermotive works as a middle man basically and gets all your into and will contact Justin at VMP on your behalf, get the tune from Justin, and forward it to you. Took about a week - week and a half to get the tune. Worth every penny.

- heres a video from today. Doesn't really do it justice but you get the idea.
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2014 Sterling Gray GT (Ordered1/24) (Built2/25) (ETA3/12) (Picked Up 3/21)l 443.9/417.8 l
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Old 10-19-2013, 07:39 PM   #26
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American racing 1 7/8 longtubes with their off road h pipe, resonator delete, and borla s type quad tip axleback. I am running a VMP tune. I got the tune through hypermotive. Jay at hypermotive works as a middle man basically and gets all your into and will contact Justin at VMP on your behalf, get the tune from Justin, and forward it to you. Took about a week - week and a half to get the tune. Worth every penny. - heres a video from today. Doesn't really do it justice but you get the idea.
yeah. I went straight through to the vmp website. But all I have is the tune. Getting a lethal o/r x and deleting the resonators soon.
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Old 10-19-2013, 07:43 PM   #27
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yeah. I went straight through to the vmp website. But all I have is the tune. Getting a lethal o/r x and deleting the resonators soon.
Sounds good man. Make sure you letjustin know you are getting a off road pipe so he can revise the tune. I think for something minor like that he does the revision for free.
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Old 10-19-2013, 07:50 PM   #28
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443 with those mods is high. That was a hapoy dyno
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Old 10-19-2013, 08:14 PM   #29
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Nice numbers Joey8! I keep wondering why everyone with long tubes is making more power than I am. I have a full Bassani exhaust, Airaid CAI, and Bama's tunes. My car made 405 rwhp and 378 rwtq on the 87 octane street tune and 411 rwhp and 381 rwtq on the 91 octane race tune. Now the nitrous was a different story...the car made 519 rwhp and 551 rwtq on a 100 shot with the Nano system.
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Old 10-19-2013, 08:16 PM   #30
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I keep wondering why everyone with long tubes is making more power than I am. I have a full Bassani exhaust, Airaid CAI, and Bama's tunes. My car made 405 rwh and 378 rwtq on the 87 octane street tune and 411 rwhp and 381 rwtq on the 91 octane race tune. Now the nitrous was a different story...the car made 519 rwhp and 551 rwtq on a 100 shot with the Nano system.
I took the longtubes off my car. Power is the same. Longtubes vs a good offroad x such as the magnaflow. Wont notice much of a diff.
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Old 10-19-2013, 08:24 PM   #31
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I took the longtubes off my car. Power is the same. Longtubes vs a good offroad x such as the magnaflow. Wont notice much of a diff.
I am inclined to agree with you. I saw another local guy with a '12 GT make 410 rwhp (can't remember his rwtq). He had an o/r x-pipe, Boss intake manifold, JLT CAI, and a custom tune. His car sounded good, but IMHO, cars with long tubes produce a much better sound.
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Old 10-19-2013, 09:51 PM   #32
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Yes sound will change slightly. But as far as power, nothing at all really.
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Old 10-19-2013, 09:56 PM   #33
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That's a nice ride and sound great
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Old 10-19-2013, 10:13 PM   #34
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Here's a video of my car on the dyno. Notice the difference in sound with the x-pipe on my car and the h-pipe on Joey8's car. Both sound good in their own way.

VID_20130711_102031_zps685b0da1.mp4 Video by 10HUTT | Photobucket
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Old 10-20-2013, 03:20 AM   #35
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So what I'm grabbing from parts of this thread is that power-wise it doesn't make sense to get long tubes AND the o/r x-pipe? I know the sound would change but getting one versus getting both won't help? I'm also seeing/hearing that h-pipes produce and deeper rumble (which is what I'm looking for). I was looking at getting BBK longtubes, o/r x-pipe, and GT500 axelbacks to get power and a deep, not too raspy, consistent sound. Is there a flaw in this?
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