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Discussion Starter · #1 ·
Hi Everyone,


Here are couple of pictures of the Long tube headers with the mid pipes installed on a SRT8 300

We have moved the location of the 02 sensors and with this setup there are no codes or check engine lights and the headers come with the correct 02 extensions and install without cutting or grinding

We will host up a video on our web site monday on the sound which is Awesome combined with the magnaflow exhaust

here is a link to the headers on our web site and they are in stock.!

http://www.gsmotorsports.com/Mercha...&Product_Code=SRT-LXHDR&Category_Code=SRT8HDR


See attached

Scott Quaranta
www.GSMotorsports.com
 

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Scott,

It appears that the O2 location is the same as on the parts I have. Can you verify if you changed them since you shipped all the packages out?

Secondly, it appears that you have a 'fitting' between the O2 and the O2 bung in that second picture. Is this true? If so, how far off are we from a "real" fix that actually manipulates the electrical signal and doesn't rely on adjusting the actual O2 location in the exhaust flow?

Todd
 

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Do you suggest using the gaskets or using copper RTV. Every car I have ever owned did not have factory exhaust gaskets and every set I put on with aftermarket headers broke apart or leaked after awhile> Are the flanges all trued?

Thanks
 

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Discussion Starter · #4 ·
Hi Todd,

We have the 02 spacers and we are shipping then with all the orders

Scott

GS Motorsports.com
 

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Has a dyno been posted?
 

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Good looking setup. Are there any issues with passing CA emissions using
these headers and the Magnaflows?

Thx Frank
 

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Looks cool! Waiting for results. You might want to check the crossmember bolts, one is about to fall out!
 

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Discussion Starter · #9 ·
freakyshiat said:
Has a dyno been posted?

here is the link to the orignial post showing the dyno before and after


http://www.300cforums.com/forums/srt-8-general-discussion/11265-gsm-6-1-header-results.html


The 6.1 headers made 26 rwhp and over 30lbs of torque on a completly stock car with stock exhaust, then we added the magnaflow cat back and picked up an additional 7-9 rwhp

They are not 50 state smog certified


We were involved in the design of these headers and the goal was simple, make hp and tq and have a great quality header system that will not throw codes or check engine lights

The stock design manifold is a good one right from chrysler so just throwing a un-tuned header or a shorty header will not yield any power gains worthy of changing out the stock manifolds.

The Kooks headers feature Equal length tuned 1.7/8" primary tubes
and 3" fire cone collectors


Scott Quaranta
GS Motorsports
 

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That would be my car that Scott is showing. This car feels and obviously sounds totally different than the car that I drove to GSM yesterday morning. It's not likely that I will dyno it in the near future, so you will have to refer to previous posts that have that info. Scott also put on a 180 thermostat and the torque / fan mods as well. I woke up early this morning to "bond" with what feels like a brand new car and ran it up and back a stretch of local freeways and entry ramps quite a few times. Definitly stronger on the low and mid range and by the way, this car can no longer be considered "stealth" as it now has a very mean and aggressive sound. You cannot tell when you are cruising, but at start up and any degree of acceleration, this car wants to be noticed.
Drove home from GSM in stop and go traffic for about an hour in 60 degree temps and the thermostat was on or slightly below 200 the entire time. Not showing any codes or warning lights at this time for anything. I need to experiment with the torque mod to give any type of evaluation, but it might be more difficult to determine as the car with the new exhaust feels so much stronger.
One final but very important note. I have been incredibly impressed by the guys at GSM. I'm not a young guy and am generally pretty skeptical and have my bs monitors always working, particularly when I'm dealing with any type of sales. These guys are very genuine and helpful and I cannot recommend them enough. I have no financial incentives here, did not get a deal with the work they did, it's not like that. I met them at the West Coast Meet and Greet, spoke with them a couple of times after that and was pretty much convinced that I wanted them to do the work. After yesterday however, there's no doubt. Hope everyone had a great holiday weekend! Now, bring on the new gear ratios, and can someone please shut my brakes up!
 

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Great News Scott!

that is awesome guys!
Can't wait for something legal here in California... :wink1:
hehehe
and we all know that'll never happen...
so go legal and get "shorty's" or go illegal for smog purposes and get the Kooks... freakin' Cally smog rules sometimes...
we are all going to die anyways... (ok, off the soapbox)
Scott, have you done any tests with "shorty's" - I know Gibson has a system for the 5.7L - does anyone have shorty's yet for the 6.1L?
And if so, are there any gains?
thanks!

FYI - everyone
I will be at Magnaflow this week to get the High Flow cats installed on my car.
I was the guinea pig car for those back in September (has it been that long)...
and we saw a max gain of 8-10hp...
so with my Magnaflow cat-back exhaust system on there...
this will be a good baseline number for everyone to compare the gain on the Kooks Headers overall to your system if you decide to add it to the Magnaflow cat-backs and high flow cats...
And I can't wait to hear Doyle's ride now with them on.
Once again Scott, thanks to you and Kooks for the development of these headers...
 

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looks great n i bet feels better running them but $1500. for the headers and $800. just to install them seem kinda steep the the hp n tq gain.....
 

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GSM said:
here is the link to the orignial post showing the dyno before and after


http://www.300cforums.com/forums/srt-8-general-discussion/11265-gsm-6-1-header-results.html


The 6.1 headers made 26 rwhp and over 30lbs of torque on a completly stock car with stock exhaust, then we added the magnaflow cat back and picked up an additional 7-9 rwhp

They are not 50 state smog certified


We were involved in the design of these headers and the goal was simple, make hp and tq and have a great quality header system that will not throw codes or check engine lights

The stock design manifold is a good one right from chrysler so just throwing a un-tuned header or a shorty header will not yield any power gains worthy of changing out the stock manifolds.

The Kooks headers feature Equal length tuned 1.7/8" primary tubes
and 3" fire cone collectors


Scott Quaranta
GS Motorsports
Thanks for the reply. Are you planning on doing a group buy? I am interested in one with the free chrome coating.
 

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srtdan said:
looks great n i bet feels better running them but $1500. for the headers and $800. just to install them seem kinda steep the the hp n tq gain.....
You have a valid point and to me it's more of a general question of what anyone wants to spend ANY of their money on. The whole package (Kooks, Magnaflows, the mods and the install) was around $3600. Quality products, the work was done right, my service dealers already told me they are cool with the mods . . . . . . . so to me, it was money well spent. Man, just hearing the beautiful sound it makes when I start the car up is worth the money!
 

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Discussion Starter · #15 ·
freakyshiat said:
Thanks for the reply. Are you planning on doing a group buy? I am interested in one with the free chrome coating.

The pricing we have @1595.00 with free Cerma Chrome coating is the current pricing , if you take the fact that the coating is a 250.00 value ..

that would make them effectively less expensive than the best price's out there on smaller 5.7 headers



Scott
 

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I want to see numbers after the magnaflow, no pre magnaflow. These things are likely only worth 10-15 right? I asusme they did the stock setup first knowing they could advertise a 30+ gains and not be "lying".
 

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Discussion Starter · #17 ·
1fast400 said:
I want to see numbers after the magnaflow, no pre magnaflow. These things are likely only worth 10-15 right? I asusme they did the stock setup first knowing they could advertise a 30+ gains and not be "lying".
We Really like the sound and performance from the magnaflow system with the headers, I will post the dyno tomorrow, it was like 397 tq and 393 or 394 hp, basically 7-8 hp and like 3-4lbs of tq


Scott
 

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You aren't following me. There are dyno's showing a manganflow exhaust giving 20hp/tq at the rear wheels. This would mean your headers are only worth 5hp and 10tq. You did the additions in reverse order to give a false impression of how much hp/tq they add.

At this point, I want to see someone who added the magnaflow exhaust and had it dynoed, add these headers and then do a dyno. I have a feeling they will struggle to break into the double digit gains. Care to place a bet?
 

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Discussion Starter · #19 ·
We tested the headers back to back stock, there are a lot of numbers that people post from different dynos on all types of mods, the dyno we conducted was back to back at the same engine tempature to give a true reading of the gains on the headers.

Since all's we do is Chrysler and Dodge products I have personally installed a lot of cat back systems and I can tell you one thing for sure the gains on a cat back only do not hold a candle to the power gains with the headers period.

Scott
 

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Scott,

Any plans to stick a 3" X-pipe in one of your vehicles and see if it helps with the power production? Some of the info from the Dynatech side is saying that may be a key in getting additional power from the headers. At this point, it appears the Kooks headers/high flow cats followed by the Magnaflow exhaust is the most powerful exhaust combination out there. If the X-pipe really does help, maybe you could crack a 400hp or tq number :D :D

Even if you don't test a 3" X-pipe, maybe you could get us one that will fit our very narrow pipe seperation going into the mid-body muffler so I can buy it ;)

Todd
 
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