Im planning on putting Headers on my car. I have the NPP with remote and love it.
My question is does anyone have sound clips on just a Header swap? Is there much of a diff in sound?
Also where is the hp/tq gain ? down low or up top?
thanks
Nick

 

 

There will be a big difference in sound. Much louder.

I did a quick search and this thread was the first example I found with header only dyno results. http://forums.corvetteforum.com/c6-t...d-pricing.html

 

someone posted this video on a different thread

its headers with NPP's, with a mild cam i think

 

If you're not doing heads and a cam, don't waste your money on headers....

If you want a nice (better or louder) sound, then invest that header money, into a good after market exhaust.... Lot of good choices out there from Corsa to Billy Boat to Magnaflows to Borla Stingers... Take your pick.

Good luck....

 

your joking right?

headers and npp's will make a great deal of power gain, after a tune which is required.

 

Headers are a building block to good power. Alot of us started with headers as one of the first moves. Its all about deep breathing. The Stock heavy cast iron manifolds restrict breathing terribly. Headers open up the exhaust. If you want to add only sound and the stock hp is enough for you then maybe you want to just add mufflers. If you want SOP more power, get headers.

 

Headers are the single best mod for extra HP.

 

I'm all for performance modifications just be aware going to long tube headers can potentially void vast portions of your warranty (if any) and if you're subject to any state emissions testing or inspection you could have a problem. Any time you remove, relocate or alter the OEM cats its a violation.


Long tube headers are an essential component of one's overall performance modifications (with IMO an added plus of improving the sound quality of the car).

 

I'd have to disagree there too. With a good tune, you could pick up anywhere from 20-30RWHP. The sound by itself is almost enough to justify getting them. Really wakes up the car and everyone else

 

The above is bad advice. You make power at the heads not the mufflers.

Go with long tube headers, high flow cats, cold air intake and a tune
Results on my GS 431 at the rear wheels. Basicly made up everything lost in drivetrain.

 

I have an 08 MN6 with NPP and Wild to Mild remote. I too wanted more sound and boy did I get it. I had LG long tubes, race cats and X pipe installed. After a great tune by Strightline Performance it really moves out. The sound with the NPP closed is sweet and when they are open it is unreal. Sooo loud that I am sometimes worried about waking the dead. I especially like cruising around at normal speeds with them open. Very happy with the sound and the performance after install and tune.

 

Put Kooks headers and cats on my GS. Even at idle, it has a substantially different sound, but not loud, just wicked. And when you open it up, holy smokes, it sounds awesome.

 

You gotta be joking, but April fools day was a while ago.Headers will give you performance as well as sound. Exhaust, while a necessity for sound sake, does not give you any perfomance on a C6.

 

I'm not joking and the OP didn't ask for HP gain... He asked for better sound and would it make a hp/tq gain.

It would make a very slight hp gain and a slight bump in the low end torque side, but in my opinion, not worth the cost. When I owned my C5, I did a tune only and had a K&N cone put on (temporarily) when they did it, as they didn't have a Calloway CAI in stock. The tune cost only $300 and before the tune, the car pulled 291 rwhp... After the tune, +30 hp to 321 rwhp.

When the parts came in, I had ARH LT header, a Calloway CAI, X-pipe, hi-flow cats and a Corsa Indy exhaust. After all those goodies installed and a tune, the best pull on the dyno gained another +30 hp to 351 rwhp.... BTW, those extra 30 hp cost me over $3000 (including labor).

Let's take a look at things... The 1st 30 hp only cost $300. The 2nd 30 hp cost $3000. A tune alone on ANY car can open up 20~40 hp. Headers alone are only good for 10 to 20 hp and hi flow cats and exhaust is good for another 10 to 20 hp.

If you want to open up a real hp gain, you need to make the engine really breathe and expel the exhaust at an increased rate.... That means tapping into the heads and adding an aggressive cam. Headers are there to just get the exhaust out faster and better, because you're going out of 1 7/8" pipes to a 3" collector and out.

Before you start telling me about the advice I gave the OP, I lived it. I did my mods step by step and I've seen the power gain each mod gives you, as you bolt them on, one by one and then did dyno pulls. Why didn't I move on for heads and a cam? Because by the time I was ready to pull the trigger, I knew I was going to buy a C6 Z06, so why waste the money? $5,800 for another 50 to 60 rwhp? That would only bring me from 390 to 425 rwhp. Instead, I put that towards the Z's downpayment and was on my way to a newer car that is putting down at least 470 to 480 rwhp stock... BTW, the shop that was doing the work is considered one of the best on the Eastcoast... But they ain't cheap.

Finally, XEUROTRASHOWNER... You're absolutely right, you make power at the heads not the muffler, so why did you say I gave the OP bad advice? The guy only wanted nice sound, not a power gain. I told if he's not doing heads and a cam, then don't waste his money on headers, the same money spent on an exhaust system would do the trick... Like you said, sound comes from the exhaust and while headers do enhance the sound a bit, $1800+ for quality LT headers alone ain't gonna get him the result he's looking for.... But a nice set of Borla stingers would and will make his car sound truly obnoxious.....

 

Dude-go back and read the original post and you will see he wants to know what hp gains will be made (hi and low range) this wasn't just about sound.I think it's about power and sound for everyone- not just sound .If it was then just pull the fuse and you will get all the sound you want, or maybe a couple of fart cans would do the trick. Did you see the rwhp of my GS after mods.(These are dyno #'s) I'm making what a stock z06 is making at the rear wheels at a cost of about 3200.00. Your estimate of 470 to 480 for a stock z06 are way way off.
That would mean your only losing 5% in the drive train?Average is about 15%
The one dyno sheet i've seen for a stock z06(that was f/s on forum) was about 435 rwhp.Plus your suggesting he trash the dual mod mufflers for Borla mufflers?

Like i said "bad advice"

GET HEADERS/CATS/CAI AND A TUNE, SAY GOODBYE TO YOUR WARRENTY AND HELLO TO BETTER PROFORMANCE AND SOUND.

 

i love my LG's

 

I believe you're talking about 2 different engines! The LS7 stock manifolds perform very well with little gain from headers unless a performance cam is added, not the case with the LS3.

 

You posted up your experience, and your results, and your opinion and that is fine of course. Your car and the particular tune you had reacted better to the Tune and CAI and gained more than when you added headers...
However, if you search and read this forum a majority of people gain more power with Headers and a tune, than just a CAI and tune, thats just a fact. I'd put money on it.
Also, you are comparing HP per dollar based on someone else doing work for you. ALot of us put our own headers on, so no charge for labor.
You're absoutley correct that the biggest power is in working with heads/cam.. which you need headers to take full advantage of that, so headers are a natural and logical progression.

 

Just curious. Are you getting 435rwhp with your ls3 with just headers, CAI, and tune?

Thanks