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Old 08-15-2018, 05:26 PM   #1
67 to 91 to 13
 
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Asking for advice on headers

2013 L99. Have a z28 cai and slp loudmouth axle back.
Looking into headers and a tune. And this will likely be it for under the hood mods.
Looking at a Texas speed complete system w/headers, cats, xpipe and exhaust.
Also considering hooker headers.
If I go with hooker what am I going to get if I just just connect headers to my current exhaust system?
Should I get their high flow cats?
What is the benefit of x pipes vs connecting to stock resonator?
Will headers and a loudmouth back axle be too loud?
I am not looking to wake everyone up in the neighborhood or make the ride not enjoyable, but Want to add some hp.
I have been scowering the forum and will continue to do so.
Any thoughts or suggestions appreciated. Thanks!
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Old 08-15-2018, 05:42 PM   #2
Royal Tiger
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Absolutely get rid of the stock resonator. Heavy and kills the sound. As for wanting some extra HP, ditching the stock cats are where you get some. I prefer US made products to ones made in China, but it’s your car.
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Old 08-15-2018, 05:59 PM   #3
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I’d stay away from the hooker headers. I had a set of them on a 2000 Trans Am and they started to rust just after a year, after 2 years, all of the coating under at the collectors wore off and had pin holes in them.

I’d go with a set of stainless, TSP, Kooks, etc

I’d also go with a complete system. Takes all the guesswork out and the system is tuned to work together
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Old 08-15-2018, 06:10 PM   #4
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Quote:
Originally Posted by Royal Tiger View Post
Absolutely get rid of the stock resonator. Heavy and kills the sound. As for wanting some extra HP, ditching the stock cats are where you get some. I prefer US made products to ones made in China, but its your car.
Which are made in the US? V china
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Old 08-15-2018, 06:14 PM   #5
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Tsp headers and cats have my vote. 02 extenders from them with new gm gaskets. And I would say go for the x pipe. May be worth selling the axle back and doing a full cat back with the headers.

Also, depending on miles may be worth swapping new plugs since you’ll have them out already anyways.
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Old 08-15-2018, 06:31 PM   #6
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Quote:
Originally Posted by Sinister10 View Post
Id stay away from the hooker headers. I had a set of them on a 2000 Trans Am and they started to rust just after a year, after 2 years, all of the coating under at the collectors wore off and had pin holes in them.

Id go with a set of stainless, TSP, Kooks, etc

Id also go with a complete system. Takes all the guesswork out and the system is tuned to work together
Thanks I meant kooks not hooker. I get the ks messed up.
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Old 08-15-2018, 06:32 PM   #7
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Quote:
Originally Posted by Royal Tiger View Post
Absolutely get rid of the stock resonator. Heavy and kills the sound. As for wanting some extra HP, ditching the stock cats are where you get some. I prefer US made products to ones made in China, but its your car.
Does the resonator affect hp at all? Thx
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Old 08-15-2018, 07:34 PM   #8
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I would suggest visiting the bolt on/exhaust section and do some reading. Tons of useful information there.
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Old 08-15-2018, 08:33 PM   #9
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I have the catless American Racing kit. Love it but it's not cheap
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Old 08-16-2018, 06:11 AM   #10
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I have the catless American Racing kit. Love it but it's not cheap
Same here, American Racing Headers and no cats.
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Old 08-16-2018, 10:28 AM   #11
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I installed the dynatech headers + cats but kept my dual mode exhaust, the sound is great and surprisingly loud in a good way.
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Old 08-16-2018, 01:20 PM   #12
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Here is my setup OP. Stainless Power 1 7/8 longtubes with cats into Corsa Xtreme 3 inch catback. Get rid of you stock resonator and at least put in an x pipe if you want headers hooked to a factory exhaust. As you can see the stock resonator is gone.

https://www.camaro5.com/forums/attac...1&d=1534443596
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Old 08-16-2018, 02:55 PM   #13
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If you ever have plans for boost or going full kill, look into headers with 2" primaries. I ran a set of 2" primary to dual 3" exhaust from an ebay brand called manzo for several years, whole entire kit was like 700 bucks header to tail pipe. Best bang for the buck ever. The MOST flow at the most affordable price, cant beat it.
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Old 08-17-2018, 08:11 AM   #14
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Quote:
Originally Posted by 67 to 91 to 13 View Post
2013 L99. Have a z28 cai and slp loudmouth axle back.
Looking into headers and a tune. And this will likely be it for under the hood mods.
Looking at a Texas speed complete system w/headers, cats, xpipe and exhaust.
Also considering hooker headers.
If I go with hooker what am I going to get if I just just connect headers to my current exhaust system?
Should I get their high flow cats?
What is the benefit of x pipes vs connecting to stock resonator?
Will headers and a loudmouth back axle be too loud?
I am not looking to wake everyone up in the neighborhood or make the ride not enjoyable, but Want to add some hp.
I have been scowering the forum and will continue to do so.
Any thoughts or suggestions appreciated. Thanks!
I went with Kooks with high flow cats personally. I've been very happy with them and while some say I overpaid, I'd buy them again because I feel I got exactly what I wanted. With your loudmouth exhaust you may get a little loud, but if you're still running the stock resonator you may not be as bad as if you were without it. However, you're likely to drone especially if you leave AFM enabled with your headers. My Solo exhaust has very minor drone with my headers and AFM still enabled, but it really isn't bad thanks to the J pipes.

Quote:
Originally Posted by 67 to 91 to 13 View Post
Which are made in the US? V china
American made: Kooks, ARH, Stainless Works
Chinese made: Everything else: Texas Speed, Stainless Power, OBX, Speed Engineering, etc.
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