Jump to content

New Headers available

brianc636
 Share

Recommended Posts

Chips Enthusiast

Chips

Posted
Posted
On 4/28/2019 at 2:00 PM, destrada127 said:

Wow! $4k for a little sound and better flow just to be choked back down by cats. I'd rather spend that plus 2 more on a supercharger

Sent from my SM-G975U1 using Tapatalk
 

Long tubes bypass the factory cats , normally you run them catless and tune out the sensors, they offer Y pipe with cats but it defeats the purpose a bit.

 

On 8/30/2020 at 11:47 AM, calgator73 said:

Has anyone added the kooks headers with ultra green y-pipe and not tuned?  love to see the dyno results.

You would still Likely get a cel and need a tune , the long tube headers are much longer than stock , once adding the new Y pipe the cats are much further back than stock configuration, requiring O2 extensions , cats use heat To function and the further back Cats are the more likely they wont function efficient enough.

  • Replies 52
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

Daly
Daly

You really are just a lonely old man that has to have an opinion on everything aren't you. I'm going to start calling you Ken from now on.   So headers only net you 15hp for $1500, and? 

Daly
Daly

Definitely the word Ken   Still nobody cares...

Grumpy Bear
Grumpy Bear

Couldn't be more relevant. Those lower numbers are also at WOT. To get that 'additional' power you actually have to ask for it with the loud pedal. If it made power based only on rpm then you could no

Posted Images

calgator73 Senior Enthusiast

calgator73

Posted
Posted

I posted this after I heard back from Kooks...I'm hitting them back up for a dyno sheet today.

 

 

calgator73 Senior Enthusiast

calgator73

Posted
Posted
9 hours ago, Chips said:

Ive been kicking the tires on these once they are stock I may pull the trigger.

 

https://pertronixbrands.com/products/jba-performance-exhaust-1850s-5-1-5-8-header-shorty-stainless-steel-2019-2020-chevy-gmc-1500-5-3-6-2l-l82-l84-l87?variant=31797186232356

 

They bolt up to the factory Y pipe and cats.

I don't know how much of an advantage running shorties through the factory cats would provide.  Easy way to avoid a CEL though.

Chips Enthusiast

Chips

Posted
Posted
1 hour ago, calgator73 said:

I don't know how much of an advantage running shorties through the factory cats would provide.  Easy way to avoid a CEL though.

It changes the exhaust note a fair bit, deeper meaner sound.

 

Also

 

87BF0B1A-24FD-4B67-A1FA-9172FACF1EF6.jpeg

calgator73 Senior Enthusiast

calgator73

Posted
Posted

They are using the same term "gains" as kooks.  Really need to see the dyno.  Having a difficult time finding anyone who has run any of this without a tune.

Chips Enthusiast

Chips

Posted
Posted
9 hours ago, calgator73 said:

They are using the same term "gains" as kooks.  Really need to see the dyno.  Having a difficult time finding anyone who has run any of this without a tune.

Afe has shorties for these trucks and Dyno sheets posted. long tube require a tune no matter what. But ive seen a few shortys on the silverado 1500 without a tune.

 

Note “Gains” vs “peak”.

 

Gains are taking from a dyno run where the highest delta is. Peak is taken from where the peak power is generated.


If at 4000 RPM the difference is 15 HP between Headers and no headers but one peaks at 290 and the other 280. The gains are 15 HP but the peak Increase is 10hp increase.

See attached Dyno sheet for comparison of stock vs shorty headers.

92396DFC-4C46-45C0-B0EC-ABD723438F3B.png

  • Thanks 1
calgator73 Senior Enthusiast

calgator73

Posted
Posted
9 hours ago, Chips said:

Afe has shorties for these trucks and Dyno sheets posted. long tube require a tune no matter what. But ive seen a few shortys on the silverado 1500 without a tune.

 

Note “Gains” vs “peak”.

 

Gains are taking from a dyno run where the highest delta is. Peak is taken from where the peak power is generated.


If at 4000 RPM the difference is 15 HP between Headers and no headers but one peaks at 290 and the other 280. The gains are 15 HP but the peak Increase is 10hp increase.

See attached Dyno sheet for comparison of stock vs shorty headers.

92396DFC-4C46-45C0-B0EC-ABD723438F3B.png

Thanks for posting this.  I have always been of the same thought.  Shorties/mids no tune required but long tubes definitely.  Thought it had more to do with the cats being so far back and getting cold or something.  Looks like my truck will be done today and they extended my warranty for the powertrain.  This will be put off for a bit.

IrritableVet Enthusiast

IrritableVet

Posted
Posted (edited)

This whole needing to tune on headers isn't completely accurate. I ran my full stainless works setup with defoulers and worked fine. BUT. A tune will greatly aid and while 1400 for unlocked ecm plus headers seems a little steep you gotta pay to play. 

 

Now while I run my procharged setup on my 2020 5.3. I am waiting on seeing if someone makes a 2 inch primary setup for when the LT1 416ci goes in when i have the P1 swapped to my F1 blower. She's gonna need it. 

 

But for all intensive purposes. There are far more people running headers with no tune and no cell than most really know about. 

 

Edited by IrritableVet
Updated
Chips Enthusiast

Chips

Posted
Posted
2 hours ago, Gangly said:

You can run long tubes without a tune, but you benefit the most with a tune. 

You can but the tune is to tune out the cel, sure some run defoulers but they dont always work .

Gangly Senior Enthusiast

Gangly

Posted
Posted

I haven't seen any Long Tube header systems throw a CEL unless they removed the cats entirely as opposed to simply moving them downstream in conjunction with 02 extensions, or installing high flow cats.  

IrritableVet Enthusiast

IrritableVet

Posted
Posted (edited)
48 minutes ago, Chips said:

You can but the tune is to tune out the cel, sure some run defoulers but they dont always work .

That sure is the theory is to see if they will do it. As most header design gets better so do the abilities to defeat the CEL. Most new style Defoulers come with flow inserts to thwart that issue. Not the right way, but a way none the less.

16 minutes ago, Gangly said:

I haven't seen any Long Tube header systems throw a CEL unless they removed the cats entirely as opposed to simply moving them downstream in conjunction with 02 extensions, or installing high flow cats.  

most the green systems are pretty good about it.

Edited by IrritableVet
Chips Enthusiast

Chips

Posted
Posted
2 hours ago, Gangly said:

I haven't seen any Long Tube header systems throw a CEL unless they removed the cats entirely as opposed to simply moving them downstream in conjunction with 02 extensions, or installing high flow cats.  

Oh I just assume anyone running long tubes are not using cats . And if they are they arent factory cats which also tend to throw a code.

 

1 hour ago, IrritableVet said:

That sure is the theory is to see if they will do it. As most header design gets better so do the abilities to defeat the CEL. Most new style Defoulers come with flow inserts to thwart that issue. Not the right way, but a way none the less.

most the green systems are pretty good about it.

Im interested in defoulers with flow inserts just to further my knowledge. Can you link me .

IrritableVet Enthusiast

IrritableVet

Posted
Posted
1 minute ago, Chips said:

Oh I just assume anyone running long tubes are not using cats . And if they are they arent factory cats which also tend to throw a code.

 

Im interested in defoulers with flow inserts just to further my knowledge. Can you link me .

Defouler

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,947
    Total Members
    8,960
    Most Online
    Sothpaw27
    Newest Member
    Sothpaw27
    Joined

  • Who's Online   4 Members, 0 Anonymous, 561 Guests (See full list)

  • Latest Articles

  • Posts

    • PunchT37
      Parking Brake - Automatic Engagement Questions

      By PunchT37 · Posted

      I have a `25, 1500 that auto sets on incline. Never knew that at first. I have the electronic shifter. Just think if it didn`t do that? Unlike a mechanical shift that you can muscle out of park, how would you get this thing out? That would be a problem.   What I found out later is, I don`t have to push the button to release. Just put it in gear.   Setting parameters? Don`t know if it`s possible.
    • SoCal Angler
      Parking Brake - Automatic Engagement Questions

      By SoCal Angler · Posted

      2023 GMC 3500 HD, SLE, 6.6L Gas, 4x4, 6 Spd Options:  SLE Convenience Package; Driver Alert Package 1; Spray on Bedliner; X31 Off Road Package; TRAILERING MIRRORS, HEATED POWER -ADJUSTABLE, AUTO DIMMING, WITH TURN INDICATORS WHEELHOUSE LINERS, REAR INC. REAR AXLE - 3.73 RATIO INC. GVWR, 11,350 LBS. (5148 KG) INC. FRONT AND REAR PARK ASSIST, INC. ULTRASONIC     I have been launching my new boat and noticed some things related to the parking brake.. I usually set the parking brake (habit) when on flat ground for typical driving.    When backed down on the launch ramp to launch the boat and I place gear selector into Park, the parking brake activates automatically. My second nature is to set parking brake manually and noticed I was turing the parking brake off.  The parking brake appears to be setting itself automatically.   I looked all over my owner's manual and only found references to being on an incline and manually setting parking brake, or at times parking brake will be auto engaged, but nothing specific to my situation.    When is the parking brake automatically engaged?  Under what specific circumstances?  Can the auto set parameters be changed?     I like the auto set feature.  It would be nice if always engaged when shifted into Park and released when shifted out of Park (like my wifes 2025 RAV4).   Thanks!    
    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      www.enginelabs.com/news/what-i-learned-today-bearing-clearances-vs-oil-viscosities/     www.enginelabs.com/news/oil-viscosity-can-the-numbers-be-misleading/ The Big Lie… Coming full circle to the reason Lake discusses the Porsche engines in particular. Based on the 2000 samples in the SPEEDiagnostix database, increasing the oil viscosity in these engines, even those run on the track, showed no significant difference in results.   The smoking gun was in the oil chemistry. That is where the data shows higher instances of more wear. Molybdenum was the key; the higher the amount, the less the wear. Speed postulates that higher viscosity oils have more thickeners to artificially inflate their viscosity numbers. These thickeners lose viscosity under shear, and the result is that not all oils of the same viscosity have the same shear stability.   Having enough viscosity is the most important characteristic, but according to Speed, once that required viscosity level is reached, additive chemistry matters more than additional viscosity. Speed also states, oil pressure problems on the racetrack aren’t a viscosity problem; it’s an oiling system problem. Running a thicker oil is just a band-aid for an underlying oiling system problem.
    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      Can it still be Assembled II?   Viscosity on the decline by various means. Heat on the rise making that worse. Engine RPM in the tank. Smaller motors with more boost trying to emulate an electric motor. Full torque, zero rpm. Then we will triple the OCI. Argh.    But wait....there is more. LSPI has pushed a shift from Ca to Mg and as that cost more PLUS the run to lower sulfur compounds the TBN is moving in the wrong direction for the increased OCI's demanded.    That not being enough to placate a demand for a parameter they can't measure the other sulfur bearing compounds are also under attack. That would be zinc and phosphorus sulfonate compounds. To some degree those are being replaced with boron esters and others, i.e. titanium ect. All of which have shorter service lives. And there there is the "Secrete Sauce" marketing for AW adds that 'Can't be detected by UOA's" but trust me because I (the blenders) never ever lie.    Spoiler alert; ALL additives are sacrificial! Smaller amounts of the old blended with less robust versions of the new do not equal longer service lives. So what are the blenders recommending? Wait for it.......   MOVING THE GOAL POSTS! OMG      Let's declare the long standing TAN/TBN crossover irrelevant and tell people that soot is a great 'graphite' based lubricant which can aid tribo films. Wait, what? Let's declare that the standards used for oxidation and nitration were to conservative and can be expanded. Let's tell them that because GDI fuel dilution, although being a VISCOSITY KILLER and an acid generator is actually okay because we have better base oils that limit viscosity failure limits. (Said knowing this is measured in fractions of a centipoise and in bases not commonly used in shelf oils)   Lying from the heart is not just the new normal but we have a public, a very young public, that is so ignorant of the facts and so sure of their "RESEARCH" into AI driven models base in regurgitated  instead of scientific research based unvarnished, peer reviewed FACTS that the incoming guard is loosing their grip on reality and the OEM's are tickled pink while the blends bend the knee.    You have an ever limited set of tools to work with. And sooner or later those will be taken from you as the API and the EPA strangle the last remaining fluids from the system. What you have left is your wits. If you care to use them.    At some point in the very near future it will not longer be possible to do "What is best for the machine", and be replaced with "The best you have access too". You WILL be rewarded with half the life and twice the cost. That isn't that hard to predict.         
    • Chuck FB
      Software Update

      By Chuck FB · Posted

      I trust you saw the other comment where he knew what he was talking about !. Yes, these darned newer vehicles with all their so smart they are stupid technology, goes and drains the battery down. As you might see my other comment, I installed a Noco 5 battery tender under the hood and at this point still have the cord routed so I have to lift the hood and then plug it in but am typically parked in a garage or a shed so its not risking the engine hood in the wind. That way I am assured or hopefully so of not finding I have a battery drawn down and can't even start the truck and that also damages the battery to draw it down too far. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...