Just installed headers BIG question
Le Mans Master
Joined: Nov 2005
Posts: 6,344
Likes: 22
From: Alexandria VA
No, I didn't direct my comment to you. It was more a general comment.
Basically most are "worried" at the new found noise of adding headers because it was something that was always there, yet was conceled nicely with the cast iron manifolds.
With a tune you should have no problems - but I never had my old C6 tuned and I had plenty of valvetrain noise, never any knock
Basically most are "worried" at the new found noise of adding headers because it was something that was always there, yet was conceled nicely with the cast iron manifolds.
With a tune you should have no problems - but I never had my old C6 tuned and I had plenty of valvetrain noise, never any knock
Le Mans Master
Joined: Nov 2005
Posts: 6,344
Likes: 22
From: Alexandria VA
You dont get it, do you? Most people worry that the "noise", i.e. the regular sound of a motor running, is bad because now you hear it differently. Nothing has changed - only the amount of back pressure and total exhaust flow. Someone chime in here please
Safety Car
Joined: Dec 2004
Posts: 3,565
Likes: 5
From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Safety Car
Joined: Dec 2004
Posts: 3,565
Likes: 5
From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
it's my understanding that they (gm) moved the knock sensor to the front of the block to help prevent 'other' noises from being interpreted as knock. yes, it's possible but it depends upon how severe the 'noise' is.
Thread Starter
Melting Slicks
Joined: Jun 2006
Posts: 2,690
Likes: 1
From: Northern Calif
Valdeztke--I understand what you are saying bro. Its ALWAYS been there just hidden. Not sure I like it though.
Zig: I have an auto so I lope along at 60-65 mph at like 1200ish-1500ish rpm that when I hear it the most when gently increasing throttle.
Zig: I have an auto so I lope along at 60-65 mph at like 1200ish-1500ish rpm that when I hear it the most when gently increasing throttle.
Safety Car
Joined: Dec 2004
Posts: 3,565
Likes: 5
From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
kinda like the sound you get from low rpms and high gear ?
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Safety Car
Joined: Dec 2004
Posts: 3,565
Likes: 5
From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
in that case, i would downshift when you hear it.
oh wait you can't... hhmmm....darn automatic. just ribbing you.
see if you can get your tuner to take out some of the advance for high gear / low rpm use.
i'm assuming you use good (prefer top tier) gas.
oh wait you can't... hhmmm....darn automatic. just ribbing you.
see if you can get your tuner to take out some of the advance for high gear / low rpm use.
i'm assuming you use good (prefer top tier) gas.
Last edited by Zig; Mar 26, 2007 at 03:09 PM. Reason: grammer
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
look at it this way...
Ever heard a top fueler with its Zoomies? That's the sound you can now hear in thinwall stainless headers. It's louder when the engine is under load, and at high rpms & speed there are other noises that drown it out (like your Bullets).
You couldn't hear that sound when you had the cast iron manifolds. Now you're closer to a race car! If you open your headers right after the collectors you can sometimes see fire like dragsters. For sure the popping on overrun shoots fire with the headers open. I have cutouts right by the collectors on my Hurst Olds.
I personally love the sound of headers.
Ever heard a top fueler with its Zoomies? That's the sound you can now hear in thinwall stainless headers. It's louder when the engine is under load, and at high rpms & speed there are other noises that drown it out (like your Bullets).
You couldn't hear that sound when you had the cast iron manifolds. Now you're closer to a race car! If you open your headers right after the collectors you can sometimes see fire like dragsters. For sure the popping on overrun shoots fire with the headers open. I have cutouts right by the collectors on my Hurst Olds.
I personally love the sound of headers.
Thread Starter
Melting Slicks
Joined: Jun 2006
Posts: 2,690
Likes: 1
From: Northern Calif
My tuner, who is a great guy, said bring it by and he will check it out. Sounds to him like I am describing the header "tin can" noise. He has moved my shift points up in D mode so it is not as bad but the stock S mode shift points let the rpms drop lower in 6th before downshifting and it is not very enjoyable. I know leave it in D mode
I might have a set of AR's for sale in a week or two if I cant get my mind around it. Like the growl though.
I might have a set of AR's for sale in a week or two if I cant get my mind around it. Like the growl though.
Last edited by knkali; Mar 26, 2007 at 09:15 PM.
