Jump to content

Performance Upgrade Package

brothernov
 Share

Recommended Posts

Chips Enthusiast

Chips

Posted
Posted (edited)

Curious On this .

These “Catback” exhaust systems are just that, from the cat back replaced.

why pay all that money to replace GMs OEM piping which is already stainless!

 

The only gains you Get are from the muffler swap , taking the old muffler out with the flappers and replacing with a high flow muffler no flappers.

 

essentially that 13 HP gain for $2000 dollars can be had for around 200-300 dollars.

 

save your money people, replace the muffler you will get the same gains and sound or better lol.

 

as far as a cold air intake , get S&B , Volant or Cold Air Inductions. They make much better design intakes and filters. Disconnect the negative battery terminal during installation. This resets the ECM so it can re learn the fuel trims . 

 

No need to get GMs “Tune” . Its not a tune.

Edited by Chips
  • Like 3
  • Replies 132
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

OnTheReel
OnTheReel

The exhaust isn’t obnoxious at all but certainly a noticeable difference over the stock exhaust which is basically silent at all engine speeds.   If I’m honest, it was a little louder than I

SierraAT4
SierraAT4

This video convinced me to buy one:   

Chips
Chips

Curious On this . These “Catback” exhaust systems are just that, from the cat back replaced. why pay all that money to replace GMs OEM piping which is already stainless!   The only

Posted Images

INTJ Enthusiast

INTJ

Posted
Posted
39 minutes ago, Chips said:

Curious On this .

 

These “Catback” exhaust systems are just that, from the cat back replaced.

why pay all that money to replace GMs OEM piping which is already stainless!

 

The only gains you Get are from the muffler swap , taking the old muffler out with the flappers and replacing with a high flow muffler no flappers.

 

essentially that 13 HP gain for $2000 dollars can be had for around 200-300 dollars.

 

save your money people, replace the muffler you will get the same gains and sound or better lol.

 

as far as a cold air intake , get S&B , Volant or Cold Air Inductions. They make much better design intakes and filters. Disconnect the negative battery terminal during installation. This resets the ECM so it can re learn the fuel trims . 

 

No need to get GMs “Tune” . Its not a tune.

 

As of a couple months ago, the only emissions legal CAI was the GMPP.  Also, the GMPP exhaust does not cause any drone.  If you just get a muffler you'll may well get a drone.  You'll just have to research and try things.  All the reflash does is turn off the air filter minder.  

 

If you wind up with any rewards or discounts, you can beat $2k installed.  Even if you can't, the difference between $300 and $2000 over a 100,000 miles isn't significant.  At all in how much time and desire you have to fuss with stuff.

Chips Enthusiast

Chips

Posted
Posted
50 minutes ago, INTJ said:

 

As of a couple months ago, the only emissions legal CAI was the GMPP.  Also, the GMPP exhaust does not cause any drone.  If you just get a muffler you'll may well get a drone.  You'll just have to research and try things.  All the reflash does is turn off the air filter minder.  

 

If you wind up with any rewards or discounts, you can beat $2k installed.  Even if you can't, the difference between $300 and $2000 over a 100,000 miles isn't significant.  At all in how much time and desire you have to fuss with stuff.

 

Emissions legal? Must be talking Cali.

 

Anyway just thought it should be brought up you can buy just the muffler from borla and still get no drone and effectively accomplish the same thing.

 

A cat back exhaust system on these trucks wont produce much if any more than a muffler swap/ flapper delete. 

 

 

  • Like 1
INTJ Enthusiast

INTJ

Posted
Posted (edited)
8 hours ago, Chips said:

 

Emissions legal? Must be talking Cali.

 

Anyway just thought it should be brought up you can buy just the muffler from borla and still get no drone and effectively accomplish the same thing.

 

A cat back exhaust system on these trucks wont produce much if any more than a muffler swap/ flapper delete. 

 

 

 

Not in CA and I will never live there.  Many states now follow CARB emissions standards, but there are federal emissions standards that all vehicles have to meet and as if a couple of months ago, none of the CAIs for the 2020 6.2 were legal.  

 

No doubt the muffler is the big issue, but when buying the GMPP/Borla, you are also paying for the testing and engineering that went into eliminating the drone and minimizing the helicopter sound.  That makes it worth the cost to many of us.  For those wanting to spend as little as possible, they will have to do their own research and testing.  

 

Neither choice is wrong, but people do need to be aware.......

Edited by INTJ
Tcolburntexas Enthusiast

Tcolburntexas

Posted
Posted (edited)
7 hours ago, INTJ said:

 

Not is CA and I will never live there.  Many states now follow CARB emissions standards, but there are federal emissions standards that all vehicles have to meet and as if a couple of months ago, none of the CAIs for the 2020 6.2 were legal.  

 

No doubt the muffler is the big issue, but when buying the GMPP/Borla, you are also paying for the testing and engineering that went into eliminating the drone and minimizing the helicopter sound.  That makes it worth the cost to many of us.  For those wanting to spend as little as possible, they will have to do their own research and testing.  

 

Neither choice is wrong, but people do need to be aware.......

 

Edited by Tcolburntexas
  • 4 months later...
204Denali Enthusiast

204Denali

Posted
Posted
On 7/26/2020 at 4:12 PM, Chips said:

 

Emissions legal? Must be talking Cali.

 

Anyway just thought it should be brought up you can buy just the muffler from borla and still get no drone and effectively accomplish the same thing.

 

A cat back exhaust system on these trucks wont produce much if any more than a muffler swap/ flapper delete. 

 

 

Just swapping in a Borla muffler will lead to drone.  If you do some more custom work or keep 1 or both flappers in you very well could reduce/stop the drone all together.

 

Don't get me wrong, I went with a custom setup myself and the GM performance exhaust is a joke IMO and not worth the money, but it does have minimal drone but it also adds next to no sound, so really what was the point?

 

 

lapoolboy Senior Enthusiast

lapoolboy

Posted
Posted
9 hours ago, 204Denali said:

Just swapping in a Borla muffler will lead to drone.  If you do some more custom work or keep 1 or both flappers in you very well could reduce/stop the drone all together.

 

Don't get me wrong, I went with a custom setup myself and the GM performance exhaust is a joke IMO and not worth the money, but it does have minimal drone but it also adds next to no sound, so really what was the point?

 

 

I don't know what GM Performance exhaust you heard, but it is not a "joke", very well-built, and DEFINITELY adds sound over stock.

204Denali Enthusiast

204Denali

Posted
Posted (edited)
8 minutes ago, lapoolboy said:

I don't know what GM Performance exhaust you heard, but it is not a "joke", very well-built, and DEFINITELY adds sound over stock.

I said imo, and that is fine its built good and has some sound, barely, over the stock setup.  But I don't buy exhaust systems purely for sound, that is a component but not the entire reason.  If you want sound and that is your goal, do a muffler swap.  I've put on or had made many exhaust setups over the years, some are worth their price tag, Corsa and corvette come to mind, where others are not.  Is the GM exhaust worth the price tag? nope, but like I said that is my opinion.

Edited by 204Denali
bshort Enthusiast

bshort

Posted
Posted
1 hour ago, 204Denali said:

 has some sound, barely, over the stock setup.  

Should probably turn your hearing aids up.  

204Denali Enthusiast

204Denali

Posted
Posted
3 minutes ago, bshort said:

Should probably turn your hearing aids up.  

Good one.  Defensive much.  Its not loud, sorry that hurts your feelings 

  • Haha 1
  • 3 weeks later...
Supercup Enthusiast

Supercup

Posted
Posted
On 12/24/2020 at 5:37 AM, 204Denali said:

I said imo, and that is fine its built good and has some sound, barely, over the stock setup.  But I don't buy exhaust systems purely for sound, that is a component but not the entire reason.  If you want sound and that is your goal, do a muffler swap.  I've put on or had made many exhaust setups over the years, some are worth their price tag, Corsa and corvette come to mind, where others are not.  Is the GM exhaust worth the price tag? nope, but like I said that is my opinion.

 

Why do you feel it is not worth the price tag?  It is not cheap but the exhaust with the CAI offer fully factory engineered and backed parts, K&N filter, better sound, better flow and a new factory tune tying it all together.  It makes a legitimate 15 hp and 9 ft.lbs. of torque over stock set up (link:  https://www.gmc.com/gmc-life/trucks/sierra-at4-off-road-performance-package)

 - so unless you want more sound - what is not to like, other than maybe the OEM pricing!   Fully engineered OEM system that makes real power - that is a good combination in my book.  I have it on my 6.2L AT4 and find the total package a pretty good deal. 

lapoolboy Senior Enthusiast

lapoolboy

Posted
Posted
1 hour ago, Supercup said:

 

Why do you feel it is not worth the price tag?  It is not cheap but the exhaust with the CAI offer fully factory engineered and backed parts, K&N filter, better sound, better flow and a new factory tune tying it all together.  It makes a legitimate 15 hp and 9 ft.lbs. of torque over stock set up (link:  https://www.gmc.com/gmc-life/trucks/sierra-at4-off-road-performance-package)

 - so unless you want more sound - what is not to like, other than maybe the OEM pricing!   Fully engineered OEM system that makes real power - that is a good combination in my book.  I have it on my 6.2L AT4 and find the total package a pretty good deal. 

Mine didn't come with a K&N filter.

Supercup Enthusiast

Supercup

Posted
Posted
45 minutes ago, lapoolboy said:

Mine didn't come with a K&N filter.

I could be wrong, but my buddy works at K&N and he told me they make the filter for GM, just like the K&N filter in my 2015 Z/28.  

  • Like 1
204Denali Enthusiast

204Denali

Posted
Posted (edited)
On 1/10/2021 at 7:00 PM, Supercup said:

 

Why do you feel it is not worth the price tag?  It is not cheap but the exhaust with the CAI offer fully factory engineered and backed parts, K&N filter, better sound, better flow and a new factory tune tying it all together.  It makes a legitimate 15 hp and 9 ft.lbs. of torque over stock set up (link:  https://www.gmc.com/gmc-life/trucks/sierra-at4-off-road-performance-package)

 - so unless you want more sound - what is not to like, other than maybe the OEM pricing!   Fully engineered OEM system that makes real power - that is a good combination in my book.  I have it on my 6.2L AT4 and find the total package a pretty good deal. 

I don't see the value in it.  If we were talking the Corsa setup then I might agree.  Like I said I  am all about aftermarket setups if I see the benefit, all my summer cars have full setups from the headers back, Corsa on the Vette, Magnaflow on the Roush, but the GM perf exhaust I do not see the setup matching the price tag.  The muffler is basically the XR, which imo is not loud enough.  It just doesn't make enough sound for me.  Your basically paying the GM tax for the setup.  I put a custom mandrel bent setup on mine instead.

Your also taking the catback and combining it with the CAI for the numbers, which I'm not denying they are there, but not many are buying both. I also think the GM CAI is overpriced as well, plenty of other choices out there that cost less and look better, and put up good numbers.  I'm not after numbers, if that was what I  was looking for I'd be looking into heavy engine mods.  If I want to go fast, I pull out my car (when its not winter lol)

Edited by 204Denali
  • Like 1

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

  • Latest Articles

  • Posts

    • CamGTP
      Gas Prices

      By CamGTP · Posted

      It varies a ton around me. Some places are still at $5.00 or higher and others are way down into the $4's.   Offroad diesel was $4.02 at the one station I passed today.
    • Hdwrguy
      2027 Chevrolet Silverado: Official Discussion

      By Hdwrguy · Posted

      So after reading the reveal from Chevrolet, I kept asking myself...why did the trim levels change?   Here are the official ones:   Work Truck (WT): The quintessential fleet truck, built with durable, easy-to-clean interiors for commercial or utilitarian use. Custom: A stylish, road-oriented trim that adds a more refined appearance, standard dual exhaust, and modern exterior styling. Custom Trail Boss: An entry-level off-roader featuring a 2-inch factory suspension lift and 34-inch mud-terrain tires on a budget. Silverado: Serving as the new base consumer truck (replacing the previous LT trim), it comes standard with the Z71 off-road package when equipped with 4WD. Trail Boss: Steps up the off-road hardware with the 2-inch lift, 34-inch tires, monotube shocks, an exclusive off-road hood, and more premium interior options. ZR2: The flagship off-roader. It boasts 35-inch mud-terrain tires, Multimatic DSSV dampers, front and rear electronic lockers, forged carbon-fiber interior accents, and an available hardcore Bison Edition (co-developed with AEV). High Country: The pinnacle of luxury. It replaces bright chrome with modern satin chrome, 22-inch wheels, premium leather, real wood interior trim, a panoramic sunroof, and an exclusive front-passenger touchscreen. As others have stated, why would you want a Silverado - 'Silverado' - wth?? LT needs to remain!!!   Also, there will no longer be a dedicated Z71 model.  All 4x4 trucks will have the Z71 package. Carplay is also something that cannot be removed.  Hopefully it will remain.     I am excited about the 5.7L V8 (350 C.I.D.)  Old school Chevy power.  My only concern is whatever version of AFM/DFM cylinder deactivation.  Too bad that isn't an option a buyer can choose to have or not.   I will definitely be stopping by my local dealership when these trucks start showing up.
    • richard wysong
      Gas Prices

      By richard wysong · Posted

      I haven't seen diesel for less than $5.30 anywhere in my area
    • Chuck FB
      OCI, not when but why?

      By Chuck FB · Posted

      The not as clean as one would assume theme with the new engine oil, that reminds me of comments over the years with mechanics not always being so on board with filling an oil filter, not from the center anyway due to that typically being the clean side of the filter, danger of some contaminant falling into the filter if not careful but the realization now that the oil may not be as pure as one had assumed it would surely be. Yes it would be possible to fill from the small holes but that means messing with something to prop open the anti drain back valve if the filter is so equipped and not damage that valve in the process. Me, I have hardly ever prefilled an engine oil filter however I have prefilled diesel fuel filters with a filter on a fuel bulk tank and for anyone that has messed with diesel engines with filters and units that have a limited or no way of priming them, putting on a dry filter is a bad day to say the least with those crappy systems. But anyway back to not so clean engine oil, indeed perhaps its not so bad after all that I have not made a practice of prefilling oil filters.    As Grumpy Bear commented on keeping things clean, that I really have to wonder what the typical practice is at a dealer or any other shop that changes engine oil, do they make sure to wipe or wash off the oil plug and certainly if it fell into some gunk or onto a dirty floor, or that they wiped the filter mounting flange and didn't go and use some dirty rag and end up adding dirt to the inside of the head of the filter mount. Or be careless in how they stored or handled the new filter and if they were bumping into items under the vehicle with the filter opening facing up and having dirt drop right into the filter and if so right into the threaded center that is on the clean side. The top side, did they clean away the built up gunk that may be around the filler before removing the cap or to be really careful at that point that something right close to the filler hole that was hidden under the caps flange won't fall into the engine. Or did they clean the funnel or was that just laying there covered in oil from the oil change before and dust kicked up from sweeping the floor stuck to the oil and now that will go running into the next persons engine due to just not cleaning the funnel as "they won't know anyway" attitude as that young guy is more worried about taking a break so he can go outside and smoke a joint. Just random points that came to mind when I think about what some hired personnel may do that the shop foreman has no idea of or perhaps the whole attitude of some shops may be "eh ... who cares, they will never know the difference anyway".  
    • CamGTP
      Gas Prices

      By CamGTP · Posted

      $3.69 for 87 octane.   $4.24 for Diesel in town.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...