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Old 04-11-2013, 12:47 PM   #15
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nice chase , this should help alot of ppl.
It surely helped me! Thx Chase.
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Old 04-11-2013, 01:38 PM   #16
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Thanks for the post Chase. I'm assuming your hp/tq numbers were on the same dyno you did the stock baseline run on, and all of your header numbers included a tune?

Thanks,
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Old 04-15-2013, 06:58 PM   #17
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Quote:
Originally Posted by dekan513 View Post
nice chase , this should help alot of ppl.
Quote:
Originally Posted by 436SS View Post
It surely helped me! Thx Chase.
That is what I am here for.

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Originally Posted by JJKJ View Post
Thanks for the post Chase. I'm assuming your hp/tq numbers were on the same dyno you did the stock baseline run on, and all of your header numbers included a tune?

Thanks,
Those numbers are not from any one car or any one set of pulls, but are what we have come to expect after seeing the results of many cars. That is about what you can expect if you bolt a quality set of LT headers on a bone stock car before tuning.
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Old 04-15-2013, 10:09 PM   #18
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"I have a separate write up I am working on for stepped headers. It is one of those topics that has a lot of variables and is hard to write about without either going too long or doing the opposite and over simplifying."

Not much has been written regarding the stepped headers so this should be an interesting read. One thing I did see posted from a shop was that the stepped headers always seemed to perform in the upper end of the dyno horsepower range depending on what mods the car had.
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Old 04-16-2013, 07:24 AM   #19
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Very nice write up. I always get questions about the 1 3/4, 1 7/8, 2 inch tubes.

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Old 04-16-2013, 09:48 AM   #20
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This may be a stupid question, but hey, that's what forums are for. With an NPP exhaust system, are there any modifications that would need to be done to it in applying 1 7/8" headers?
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Old 04-16-2013, 10:38 AM   #21
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Absolutely. Stainless Works, Stainless Power, Kooks, and ARH all utilize a merge spike. Many of the "budget" headers produced overseas do not and it does have an impact on performance. I will have to add a section on that at some point.

I have a separate write up I am working on for stepped headers. It is one of those topics that has a lot of variables and is hard to write about without either going too long or doing the opposite and over simplifying.



Thanks.
Great information and I cannot wait to see the stepped information. I went with the JBA 1 7/8" Stainless & Ceramic Coated Long Tubes and they also have a "MERGE SPIKE". I paid $800.00 for the headers and mids shipped and it was the best deal on the market at the time. I have used JBA in the past with NO issues and the Camaro headers have been great.
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Old 04-16-2013, 04:22 PM   #22
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Very nice write up. I always get questions about the 1 3/4, 1 7/8, 2 inch tubes.

I love Amanda
Thanks!

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This may be a stupid question, but hey, that's what forums are for. With an NPP exhaust system, are there any modifications that would need to be done to it in applying 1 7/8" headers?
No. You just need to make sure that you buy the right headers. Look for "factory connect" or "short system" headers. That is the lingo most of the manufacturers use to reference their headers that will bolt up to the factory exhaust or standard aftermarket cat backs. An, of course, if you have any doubts or questions feel free to hit me up or give us a call.
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Old 04-16-2013, 05:57 PM   #23
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What do you think about SLP headers????
SLP headers do not meet the standards outlined in my post.
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Old 04-16-2013, 06:45 PM   #24
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ARH are great! Picked mine up from Chase with Apex in December and I finally have them installed.
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Old 04-16-2013, 06:54 PM   #25
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Chase,
Do you have a header and cat recommendation for my 2013 ZL1 vert?
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Old 04-16-2013, 08:25 PM   #26
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Chase,
Do you have a header and cat recommendation for my 2013 ZL1 vert?
Like I mentioned in the opening post, Stainless Works, Stainless Power, ARH, and Kooks are all good to go in my book. Just pick your poison. Feel free to send me a PM or give us a call if you have any questions.
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Old 04-16-2013, 09:12 PM   #27
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Great write up really helpful, just one question are there any negatives to the 2" header system, other than higher price?
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Old 04-16-2013, 09:17 PM   #28
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Great write up really helpful, just one question are there any negatives to the 2" header system, other than higher price?
That was my only negative. Some people are having fitment issues since it is bigger. I did not but it is a little bit of a squeeze. If you do have issues loosen up the motor mounts and slide the motor a quarter inch or so to the side to make room. If I were to do it again made stepped headers would be the way I'd go but I'm happy with my 2"ers
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