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Old 03-10-2013, 06:07 AM   #1
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Help with Build

Hey everyone.
Im having a bit of a dilemma on what to do and was hoping I could maybe get some guidance from you guys.

After getting back from my last deployment I came home to find that my wife had surprised me with my dream car. a Black 2011GT. Needles to say I have loved every min of it. My ultimate plan is to have a sc street car putting down somewhere between 575 to 625 hp.

I got an sct tuner on the way. and just wondering what to do next.
Ive narrowed it down to either boss IM with a cai or lt headers with an h pipe.
the main issue preventing me right now from just going a head and doing the headers is that i love the way the car sounds now. its got a nice low growl and im not a fan raspy exhaust.(btw it looks like the previous owner deleted the mufflers)
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Old 03-10-2013, 09:33 AM   #2
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I'll let the more knowledgable folks answer your modding questions. I just wanted to thank you (and others on the site) for your service. The sacrifices you and your families make should be an inspiration to us all.

Thanks and congrats, awesome suprise!
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Old 03-10-2013, 09:43 AM   #3
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Well if plan if sc down the road I think skip the boss intake for now and do long tubes . They will only make your car sound better I'm sure others will chime in

---------- Post added at 08:43 AM ---------- Previous post was at 08:42 AM ----------

And service member to service member welcome back I remember how it was when I got back lol I think I spent alot of money lmao
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Old 03-10-2013, 02:25 PM   #4
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Welcome back! I vote LT headers and o/r h or x.

Boss Mani really is only gonna catch you in the high RPM range and CAI really is good for a very few HP and sound.

Also depending on the SC you may not be able to use the Boss Mani. Some like the vortech and pro charger can but others like the Whipple and roush styled SC won't.
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Old 03-10-2013, 04:34 PM   #5
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Thanks.
I'm definitely leaning towards tubes. My concern is toward the sound. ive heard that the x pipes make it sound raspy. That's why I'm leaning toward an h-pipe. How does a cai affect the sound?
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Old 03-10-2013, 05:57 PM   #6
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I'm a big fan of the full stainless works exhaust, or for a slightly less expensive version go with the stainless power headers and ORX and get the stainless works cat back. I'm growing nearer to the LT's myself, I've done most every other bolt on there is and stainless power are the ones in going with
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Old 03-10-2013, 06:04 PM   #7
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Thanks.
I'm definitely leaning towards tubes. My concern is toward the sound. ive heard that the x pipes make it sound raspy. That's why I'm leaning toward an h-pipe. How does a cai affect the sound?
Depends on your axle backs. With some axle backs you will get nasty rasp. Others not so much. Corsa, Borla, etc. Are gonna be really deep with no rasp. Roush, pypes bombs etc. Will be overly raspy. I have O/R X with borla axle backs and they are all deep with zero rasp. Zero drone too.

Cai will just make your exhaust sound a little more open and a little louder. It isn't a huge change. Taking the cats off will be a much bigger change.
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Old 03-10-2013, 06:13 PM   #8
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Depends on your axle backs. With some axle backs you will get nasty rasp. Others not so much. Corsa, Borla, etc. Are gonna be really deep with no rasp. Roush, pypes bombs etc. Will be overly raspy. I have O/R X with borla axle backs and they are all deep with zero rasp. Zero drone too.

Cai will just make your exhaust sound a little more open and a little louder. It isn't a huge change. Taking the cats off will be a much bigger change.
Yeah that's the thing. I took a look at bottom of my car and it looks like the previous owner put straight pipes after the cats. Idk if that makes any sense. Also i was wondering if there's a quick way to put on and take off the cats, in order to swap back and forth between track(off road) and street. I live in NC and they do emissions testing
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Old 03-10-2013, 06:24 PM   #9
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Yeah that's the thing. I took a look at bottom of my car and it looks like the previous owner put straight pipes after the cats. Idk if that makes any sense. Also i was wondering if there's a quick way to put on and take off the cats, in order to swap back and forth between track(off road) and street. I live in NC and they do emissions testing
No sir, no quick way Lol. Closest you can do is some high flow cats which isn't the same. Or deal with changing them out. Which is a pain. I removed mine once, switching them out no thanks. Not too much you can do if you live somewhere with emissions testing. High flow cats or pain in the *** of switching them out.
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Old 03-15-2013, 03:41 PM   #10
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Ok here is one:
What would yield more gains.
1.lt headers with a catted Shorty h pipe.
2.cat delete with stock headers and stock h pipe
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Old 03-15-2013, 03:49 PM   #11
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Ok here is one:
What would yield more gains.
1.lt headers with a catted Shorty h pipe.
2.cat delete with stock headers and stock h pipe
Option 1. And a little more with an off road x-pipe to go with the long tubes.
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Old 03-15-2013, 09:04 PM   #12
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Option 1. And a little more with an off road x-pipe to go with the long tubes.
... only a little more? If these cars are jumping 15hp just by removing the cats... And only gain 1-2hp with high flow cats...
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Old 03-16-2013, 12:51 AM   #13
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... only a little more? If these cars are jumping 15hp just by removing the cats... And only gain 1-2hp with high flow cats...
I meant a little more power with an x-pipe vs an h-pipe both being off road.
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Old 03-17-2013, 06:35 PM   #14
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I meant a little more power with an x-pipe vs an h-pipe both being off road.
When they say off road. Is that just because of emissions?
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Old 03-17-2013, 06:40 PM   #15
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When they say off road. Is that just because of emissions?
Yes it would be removing the cats and there for illegal for day to day use...technically.
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Old 03-17-2013, 07:16 PM   #16
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Cool.thanks for all your help. I think I'm going to be going with jba long tubes. Still bouncing back and forward if I'm going to do ceramic or stainless.
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Old 04-08-2013, 12:18 PM   #17
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Had to skip on the Lts for now. But i did change out the mid pipe and will try to delete them cats this weekend.


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