# SGM Long Tube Header Development - 30whp Gain! **URL:** \ **Category:** Vendor Marketplace\ **Created:** [November 11, 2008, 4:24pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810 "2008-11-11T16:24:45Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Sasha\_SG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sasha_sg/32/5477_2.png) [@Sasha\_SG](https://forums.speedlife.net/u/Sasha_SG)\ **Post date:** [November 11, 2008, 4:24pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/1 "2008-11-11T16:24:45Z")
SG-Motorsport has been working on developing a long tube header for the VQ35 for some time now. The idea has been a long tube header that will replace both the factory exhaust manifold and factory cat pipe section, bolting up to the factory Y-pipe. Our Koni Challenge race car has had some beautiful Unitech / Coast Fab built long tube headers, however these headers only worked with a complete custom exhaust, and the clearance to the steering rack was too tight for a vehicle with stock engine mounts. Lastly, the pipes come too close to the factory EVAP vent hose and fuel feed line. They were also mild steel so longevity is a concern. After some work we were able to get our prototypes in the roadster and ready to go to see how much power these long tubes are really good for, and if it is worth putting them into production. Unfortunately due to the nature of the headers (a V-6 requiring 2 collectors and 8 flanges), the price point is going to be relatively high, as materials alone will cost us nearly the price of some of the better headers on the market currently. ![http://www.ziptied.com/Coppermine/albums/userpics/10252/jig.jpg](http://www.ziptied.com/Coppermine/albums/userpics/10252/jig.jpg) Jig to fit headers to factory y-pipe location We figured as long as we could sell 1whp for 100$ we will be ok, and that is the general price most components go for, especially when you start getting into N/A tuning. Don’t worry, our headers are not going to be 3300$!! ![http://www.ziptied.com/Coppermine/albums/userpics/10252/exh.jpg](http://www.ziptied.com/Coppermine/albums/userpics/10252/exh.jpg) Our roadster previously made 250.6whp best, with the following modifications: - SGM Custom 3” Exhaust - SGM Custom 3” Intake w/ BPI Flowstack - Pulstar Spark Plugs - Aftermarket 2.5” \> 3” Y-Pipe We can gladly report that after installing our SGM Longtube header prototype, the car produced 279.0whp and gained an average 20ft lbs of torque across the ENTIRE rpm band. From 2500rpm to redline these headers made consistent power, a peak gain of 27-33whp between 5700 and 7000rpm. ![http://www.ziptied.com/Coppermine/albums/userpics/10252/stocktosgm.jpg](http://www.ziptied.com/Coppermine/albums/userpics/10252/stocktosgm.jpg) Because we believe these to be the biggest gains we’ve ever seen from a header/test pipe solution on a 350z/G35 chassis we are going to go ahead and produce these headers for the guys that want the absolute best. Our production headers will be 304 stainless steel featuring a stepped design to help mid range power and prevent reversion, will use 3 into 1 collectors from an outside manufacturer, as collectors are the most important components of an exhaust system. The headers will be tig welded in house at SG-Motorsport and will feature 2 bolt 2.5” flanges that will mate up perfectly with any aftermarket Y-Pipe or Y-Pipe back exhaust system. Perhaps the most important feature that has not yet been mentioned is just how freaking badass the car sounds with these equal length headers and a good y-pipe bringing all the pulses inline perfectly, the result is a gorgeous smooth high pitched scream like that of a 1000cc motorcycle or BMW race car. ![http://www.ziptied.com/Coppermine/albums/userpics/10252/underbody.jpg](http://www.ziptied.com/Coppermine/albums/userpics/10252/underbody.jpg) SGM has plans to create a catted Y-pipe for customers with daily driven cars that want to keep the vehicle emissions friendly, as obviously you will lose the factory cats by going to the SGM long tube headers. Tomorrow we are sending our tubing to be mass produced and our machine shop will start the cnc process for the flanges. How exciting! We’ll keep you kids updated ---
**Author:** ![spd-dmn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/spd-dmn/32/5513_2.png) [@spd-dmn](https://forums.speedlife.net/u/spd-dmn)\ **Post date:** [November 11, 2008, 5:09pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/2 "2008-11-11T17:09:45Z")
audio of how it sounds! that or ill just have to stop by to hear for myself nice work ---
**Author:** ![Jordan](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jordan/32/5605_2.png) [@Jordan](https://forums.speedlife.net/u/Jordan)\ **Post date:** [November 12, 2008, 7:23am UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/3 "2008-11-12T07:23:38Z")
Ya, I got to hear that thing. Anyone want to trade a 350z/g35 for my 240? ---
**Author:** ![Fobwall](https://avatars.discourse-cdn.com/v4/letter/f/7ea924/32.png) [@Fobwall](https://forums.speedlife.net/u/Fobwall)\ **Post date:** [November 12, 2008, 9:53am UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/4 "2008-11-12T09:53:35Z")
That is beautiful! Good job Sasha! ---
**Author:** ![Happy240sx](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/happy240sx/32/5515_2.png) [@Happy240sx](https://forums.speedlife.net/u/Happy240sx)\ **Post date:** [November 12, 2008, 10:23am UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/5 "2008-11-12T10:23:51Z")
That Roadster is BY FAR the loudest car I have ever heard in my life. It was unreal the sounds it was making… amazing work SG. ---
**Author:** ![jammin1911](https://avatars.discourse-cdn.com/v4/letter/j/a9a28c/32.png) [@jammin1911](https://forums.speedlife.net/u/jammin1911)\ **Post date:** [November 12, 2008, 1:04pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/6 "2008-11-12T13:04:45Z")
Sex. Good work Sasha ---
**Author:** ![Happy240sx](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/happy240sx/32/5515_2.png) [@Happy240sx](https://forums.speedlife.net/u/Happy240sx)\ **Post date:** [November 12, 2008, 2:22pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/7 "2008-11-12T14:22:53Z")
Post hte vid…post the vid. Best vid on the interweb right now… ---
**Author:** ![Keez](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/keez/32/5570_2.png) [@Keez](https://forums.speedlife.net/u/Keez)\ **Post date:** [November 12, 2008, 2:32pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/8 "2008-11-12T14:32:22Z")
its the hotness!! ---
**Author:** ![Pants](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pants/32/5590_2.png) [@Pants](https://forums.speedlife.net/u/Pants)\ **Post date:** [November 12, 2008, 3:10pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/9 "2008-11-12T15:10:23Z")
[y]4Ap9jzeHMCY[/y] ---
**Author:** ![Pants](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pants/32/5590_2.png) [@Pants](https://forums.speedlife.net/u/Pants)\ **Post date:** [November 12, 2008, 3:11pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/10 "2008-11-12T15:11:06Z")
btw that thing is retarded ---
**Author:** ![Sasha\_SG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sasha_sg/32/5477_2.png) [@Sasha\_SG](https://forums.speedlife.net/u/Sasha_SG)\ **Post date:** [November 12, 2008, 3:32pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/11 "2008-11-12T15:32:12Z")
thanks pete creeper ---
**Author:** ![Keez](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/keez/32/5570_2.png) [@Keez](https://forums.speedlife.net/u/Keez)\ **Post date:** [November 12, 2008, 3:36pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/12 "2008-11-12T15:36:07Z")
LMAO! ---
**Author:** ![Pants](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pants/32/5590_2.png) [@Pants](https://forums.speedlife.net/u/Pants)\ **Post date:** [November 12, 2008, 4:38pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/13 "2008-11-12T16:38:38Z")
LOL anytime ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex034/uploads/speedlife/original/2X/b/b7170c8eddc0b95ece6b88172b2f416a08489a45.png) [@system](https://forums.speedlife.net/u/system)\ **Post date:** [November 12, 2008, 6:57pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/14 "2008-11-12T18:57:50Z")
loud holy shit ---
**Author:** ![Mr\_Phonso](https://avatars.discourse-cdn.com/v4/letter/m/a87d85/32.png) [@Mr\_Phonso](https://forums.speedlife.net/u/Mr_Phonso)\ **Post date:** [November 12, 2008, 9:58pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/15 "2008-11-12T21:58:43Z")
that thing phucking screams. wow. ---
**Author:** ![AhmadG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ahmadg/32/5577_2.png) [@AhmadG](https://forums.speedlife.net/u/AhmadG)\ **Post date:** [November 13, 2008, 3:54am UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/16 "2008-11-13T03:54:39Z")
JESUS that’s loud! Amazing work Sasha! ---
**Author:** ![Intense\_Motorsports](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/intense_motorsports/32/5593_2.png) [@Intense\_Motorsports](https://forums.speedlife.net/u/Intense_Motorsports)\ **Post date:** [November 13, 2008, 8:26am UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/17 "2008-11-13T08:26:41Z")
LOL at Dan! ---
**Author:** ![Happy240sx](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/happy240sx/32/5515_2.png) [@Happy240sx](https://forums.speedlife.net/u/Happy240sx)\ **Post date:** [November 13, 2008, 11:13am UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/18 "2008-11-13T11:13:17Z")
> [@Your home theatre/stereo set up, Moffitt need not apply](https://forums.speedlife.net/t/your-home-theatre-stereo-set-up-moffitt-need-not-apply/19066/9): > > LOL at Dan! Hahaha ---
**Author:** ![MPD47](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mpd47/32/7383_2.png) [@MPD47](https://forums.speedlife.net/u/MPD47)\ **Post date:** [November 13, 2008, 2:57pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/19 "2008-11-13T14:57:42Z")
Looks and sounds great, any more in depth photos or pricing info? ---
**Author:** ![rogerthat240](https://avatars.discourse-cdn.com/v4/letter/r/839c29/32.png) [@rogerthat240](https://forums.speedlife.net/u/rogerthat240)\ **Post date:** [November 16, 2008, 6:52am UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/20 "2008-11-16T06:52:03Z")
holy crap that’s loud lol. Nice fabbing + gains. Damnnn… [Next page](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810.md?page=2)