To those running mufflers off of the headers
11 Second Club
Joined: Mar 2006
Posts: 74
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From: STL BITCH!!!
I that about doing this a long time ago, but never did it cause i thought it would loss power. I had duel cutouts on a stock h/c and it loss 9hp. If i do this on my current setup in the sig will it gain anything.
Originally Posted by SLPSS99
Bain, So you just have the Muffler slipped right on to the header and then a dump off on the end of the muffler?
I ran spiral flows off the headers, they were kinda raspy.. they are also pretty heavy mufflers
I'll be doing a different muffler, more oval, perahps magnaflow if I put mufflers on my headers again.
I'll be doing a different muffler, more oval, perahps magnaflow if I put mufflers on my headers again.
Originally Posted by headsupkid01
I that about doing this a long time ago, but never did it cause i thought it would loss power. I had duel cutouts on a stock h/c and it loss 9hp. If i do this on my current setup in the sig will it gain anything.
It might have to do with velocity instead of backpressure.
I think you want to keep the velocity as high as possible and the backpressure as low as possible.
TECH Resident
Joined: May 2005
Posts: 983
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From: 8000DA Land
Originally Posted by BAIN
Yes. Header Collector -> 3.5x3 reducer -> 3" Oval Borla XR-1 -> turn down
Right now i have flattened dynomax bullets, but i am getting tired of the sound...
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Thread Starter
Joined: Mar 2004
Posts: 7,318
Likes: 2
From: Southside
Originally Posted by Luis Castellanos
Do you have any videos/sounds from that setup..
Right now i have flattened dynomax bullets, but i am getting tired of the sound...
Right now i have flattened dynomax bullets, but i am getting tired of the sound...
Originally Posted by headsupkid01
I hate to ask dumb question, but what is SI and i'm not shure what you mean by "velocity".
Originally Posted by BAIN
Yes. Header Collector -> 3.5x3 reducer -> 3" Oval Borla XR-1 -> turn down
I may have to do that to mine with my spriral flows.
"All Motor 9 Second club member"
iTrader: (60)
Joined: Nov 2001
Posts: 3,235
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From: On the Bumper!
Here are a few pics of my max effort race set up. It is quiet enough to drive on the street, but no where near as quiet as my y-pipe with the dual/dual ultraflow set-up.
It sounds real tough and we ran our first 9 second pass thru the mufflers as the pics show.
I do love the sound, but as much as we drive the car, it's not a realistic long term option for us.
It sounds real tough and we ran our first 9 second pass thru the mufflers as the pics show.
I do love the sound, but as much as we drive the car, it's not a realistic long term option for us.
Originally Posted by brandonppr
is that why you did the bfh mod to that part of the frame where the fuel/brake lines cross?
I may have to do that to mine with my spriral flows.
I may have to do that to mine with my spriral flows.
Yup
I found a video of the Borla XR1's off the headers. 
I'm going to be changing back to the Magnaflows this week to quiet it down a little more. I will get a video of those also.
I'm going to be changing back to the Magnaflows this week to quiet it down a little more. I will get a video of those also.
Originally Posted by flyinZ
Yea, that'd be nice to see how much the Magnaflow's quiet that down..And to the guy usin' the Dynatech's...post that vid up as well.
The dynatechs should be done and installed tomorrow!! I will post up pics and a soundclip.
Originally Posted by revtime
Here is a pic of my purple horny header mufflers. They turn down right where the pic ends.
And yes I scrape the mufflers occasionally but I have an Eibach drag launch kit on it so the rear sits pretty high.
I have the same set-up, talk about cheap lol!
Here's a couple pics of my setup. Installed on Friday (23rd), but anyways, they're just some sort of cheap glass-pack off of the collector w/o turndown. It definatly has the sound, but at WOT, good god it's loud. Don't know if turndowns or better mufflers would help. Just wanted something cheap incase I didn't like it. So far so good.
Chris
Chris