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Jan 18, 2014 | 09:30 PM

Blown-C7

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From: Houston TX

Headers

I have seen a couple threads, but just curious to see what history anyone has with headers on the C7...? What are the best from experience?, and I am a little concerned about increased sound too...don't want a loud car.

What power gains are you guys seeing from stock performance exhaust?

Jan 18, 2014 | 09:35 PM

Theta

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St. Jude Donor '14-'15

Not to be rude, but there are a bunch of threads that should help answer your questions.

Jan 18, 2014 | 09:35 PM

ChucksZ06

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Check the threads from the vendors. All the info is there for the reading.

Jan 18, 2014 | 09:40 PM

Blown-C7

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I have been reading but not seeing power comparisons to stock performance exhausts....I had specific questions for people that have them on their car, including increased noise levels...

Jan 18, 2014 | 09:42 PM

Theta

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St. Jude Donor '14-'15

There are at least three threads that specifically show dyno graphs for different header brands vs stock vs tuned stock...

Just start reading.

Jan 18, 2014 | 09:44 PM

Theta

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St. Jude Donor '14-'15

If you want to know about noise, all of the LTs will measurably increase loudness. Without cats, much more so.

If you have NPP, the idle will still be somewhat tame. The WOT will sound extremely loud, though.

ARH makes mid-length headers that offer a low-noise solution.

Jan 18, 2014 | 09:52 PM

Blown-C7

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I will look at the ARH mids then as want as minimal increase in noise as possible...I have looked but haven't seen any dyno information showing specifically header vs stock performance, and power gains...seems easier to just ask at this point.

Jan 18, 2014 | 10:00 PM

Theta

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St. Jude Donor '14-'15

Seriously, man?

This one specifically spells out everything you're asking:

http://forums.corvetteforum.com/c7-t...ts-inside.html

And for good measure, here are a bunch more:

http://forums.corvetteforum.com/c7-t...ts-inside.html

http://forums.corvetteforum.com/c7-t...id-length.html

http://forums.corvetteforum.com/c7-t...r-install.html

http://forums.corvetteforum.com/c7-t...ader-test.html

Killing me here...

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Jan 18, 2014 | 10:02 PM

Blown-C7

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Dude, you can skip over this thread if it pains you to look..lol. I appreciate the info, but did not see anything that specifically answered my questions.

Jan 18, 2014 | 10:04 PM

#10

Blown-C7

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Thanks for adding that thread...that is what I wanted and did not see when did my search.

Jan 18, 2014 | 10:07 PM

#11

Theta

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St. Jude Donor '14-'15

I'm glad it helped. Like I said, I wasn't trying to be rude.

I'm standing in my garage with greasy hands working on my race car (and messing with wires on the C7) and still found that within a few minutes.

But again, hopefully you can decide from that information. I would recommend the ARH mid-lengths if you're concerned about noise.

Jan 18, 2014 | 10:09 PM

#12

Blown-C7

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Since mine will be a forced induction car I may have to go long-tubes...the only question unanswered that I sent to Ron was can I keep the stock cats since changing those out seem to be the major factor for increased volume...

Jan 18, 2014 | 10:31 PM

#13

Theta

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St. Jude Donor '14-'15

This is no way to retain the stock cats unless you use the ARH mid-length system.

All LT systems use midpipes with high-flow cats (if applicable).

Jan 18, 2014 | 10:34 PM

#14

Blown-C7

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Hmmm....I listened to a couple vids and they seem to be a lot louder...may scrap that idea for now...just look for an upgraded cat-back system

Jan 18, 2014 | 10:53 PM

#15

Theta

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St. Jude Donor '14-'15

Headers with the stock exhaust will be a much better gain for the money than a catback. All of the catbacks out now will only increase the sound from the OEM NPP.

If you add headers down the road with the catback, it may well be very loud.

Jan 18, 2014 | 10:56 PM

#16

Blown-C7

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Since am going with a blower do you think LT's are the way to go then considering my noise hopes, or mids still...leaving the stock exhausts alone...?

Jan 18, 2014 | 10:58 PM

#17

Theta

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St. Jude Donor '14-'15

I wouldn't change the OEM NPP (I won't be anyway), and would go with a catted LT or mid-length setup from ARH with the S/C kit of your choice.

The cats will cut down on a lot of the noise you're not looking for.