Jump to content

Exhaust question!!

Joey Britt

Recommended Posts

Joey Britt New Member

Joey Britt

Posted
Posted

Hey guys I'm New here and would love it if yall could help me out. I was just wondering if your truck vibrates when in v4 mode. I have a spintech pro Street 6000 muffler that is a sing exit dump directly over the rear axle. I'm suspecting that it's just the rubble shaking the bed. Also what exhaust are you guys running (if at all) and are you having the same problem?

Nascar291 Enthusiast

Nascar291

Posted
Posted

I'm running a GM borla. Great sound and no vibration even in v4 mode. I went with Borla because its endorsed by Gm.

SouthCo Senior Enthusiast

SouthCo

Posted
Posted

I had the Corsa Sport cat back on mine and it didn't shake. You could definitely hear when it was in V4. Otherwise it sounded great. BlackBear tune took care of V4...

tnchevy Senior Enthusiast

tnchevy

Posted
Posted

I just returned a dynomax vt because of slight shaking and "helicopter" sound but only done it under very light throttle while in V4. Any other time the exhaust was great.

Sto101 New Member

Sto101

Posted
Posted

I'm running a GM borla. Great sound and no vibration even in v4 mode. I went with Borla because its endorsed by Gm.

What model did you go with?

BlackZ71Silverado Senior Enthusiast

BlackZ71Silverado

Posted
Posted

I'm running a GM borla. Great sound and no vibration even in v4 mode. I went with Borla because its endorsed by Gm.

 

I also have the GMPP, Borla cat-back system on my 2008 V-Max. It's the "performance" model. When I ran it for a while with AFM enabled, it did drone terribly on the highway when in V4 mode.

Nascar291 Enthusiast

Nascar291

Posted
Posted

It's from GM performance parts by Borla. I think the mufflers for the 5.3 are all the same and the 6.2 are all the same. They are a touring model at least for the 5.3. Not sure about the 6.2.

Nascar291 Enthusiast

Nascar291

Posted
Posted

It a dual side exit part # 19303337. It's about as loud as the touring model I had on my Suburban but without the drone at highway speeds.

szalkerous Enthusiast

szalkerous

Posted
Posted

I have the GM Borla dual rear exit, dealer installed before delivery, and have no issues.

To be perfectly honest, the AFM V4 mode in these trucks sounds and feels awful and always has since they started doing it. My 2012 with the 3.08 gears was worse than my current 2015 with the 3.42s. Could just be the right ratios at the right speeds?

I think the transition from cruse to acceleration is embarrassing in all GM full-size vehicles. First it takes a year to decide what gear it wants, and then it mozies itself back into V8 mode, all while torque management makes sure you ride on a cloud. Forget about trying to jump lanes in traffic.

I guess the nice part is when you jump into a GM performance car with a manual 6-speed, you feel like you're in a LeMans racer.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Grumpy Bear
      The Peckish Synapse

      By Grumpy Bear · Posted

      You can always count on greed to prey on ignorance and stupidity.    Friend bought a 2019 Ford Flex and asked me about using Valvoline R&P 5W30 in it. Told him give the miles on it and the fact it wasn't yet using oil that it was a good plan. He uses a Valvoline quick change shop for his oil service.   First they tell him that isn't the oil the OEM recommends. He told them he didn't care what the OEM thought. Then they floated the, "But it will void your warranty"    His reply was it's a 2019, there is no warranty and informed them their knowledge of the law was lacking.    Then they tell him 'But it will ruin your motor"!.    Mine to ruin he says. Finally they give in and charge him 150% the semi-syn price    Point it the brainwash is so embedded that even the service industry is drunk on their swill. The public is right behind them. Echoing the same lies on every forum and media platform. If the end goal is indeed EV then I'd say that ship is about built. 
    • CamGTP
      Gas Prices

      By CamGTP · Posted

      Diesel hit $6.00 here today at the truck stop.   Payed $2.79 for E85 today too.
    • richard wysong
      Electrical Problem - solved

      By richard wysong · Posted

      Thanks for posting, I'm sure it will help someone
    • Brendan C
      2026 6.6 L5P oil cooler leaking oil at 4,000 miles

      By Brendan C · Posted

      New to diesel trucks. I happened to find my oil cooler leaking oil externally with only 4,000 miles on the truck. I didn’t realize this was an issue until I started researching it. Dealer is going to replace it under warranty but I’m wondering if there’s anything GM is working on to fix this issue. I’ve heard the oil filter used is the same as they use on their V6 motors and that’s what is causing the problems. Should I switch to a bigger filter or keep using the OEM recommended? 
    • Vu1can
      Seems to be Missing a lot of Updates

      By Vu1can · Posted

      So, GMCustomerService:  Judging by the Update History pictured above, is this truck missing any updates that it actually needs. If it's just for the infotainment system, the radio is working fine and no trouble with SeriusXM. and Android Auto is working fine wirelessly with my phone. Some months ago, an update notice was sent to my truck. I approved the update and it finished saying that the update was successful, but it seems that whatever that update was, it didn't actually get installed - at least not if I'm to go by the Update History shown above.   So, again, are there any updates that this truck really should have? I've checked with my dealer but they're reluctant or commit to anything and if I want them to check, they require a $200.00 fee just to check it out and then I'd have to pay for the actual update(s).    Ignorance is bliss, and if none of the updates goes to fixing any mechanical discrepancies, I'll just leave things as is.  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...