Uploaded June 2026 | Updated September 2026, 2 days ago
Which muffler sounds best on a 454 dually—the Flowmaster Flow FX or the Borla Pro XS?
In this episode, we tackle another project on our 1991 Chevrolet C3500 dually. The old exhaust had seen better days, so we decided it was time to build a brand-new custom stainless steel exhaust system and find out which muffler sounds best behind a big block Chevy.
After fabricating the new system, we put the Flowmaster Flow FX and Borla Pro XS head-to-head in a real-world sound test. One of them earned a permanent spot on the truck... but you'll have to watch to find out which one made the cut.
Whether you're into OBS Chevys, GMT400 trucks, fabrication, towing rigs, drag racing, or just keeping old iron on the road, we're glad you're here.
👇 Let us know in the comments:
Flowmaster or Borla—which one would you choose?
Thanks for following along with our journey as we build, repair, race, and enjoy these machines together.
🔧 1991 Chevrolet C3500 Dually
🔥 454 Big Block Chevy
🛠️ Custom Stainless Exhaust Fabrication
🎵 Flowmaster Flow FX vs Borla Pro XS Sound Test
Faith • Family • Fast Cars
#J2GarageWorx #GMT400 #OBSChevy #C3500 #454Chevy #Dually #BigBlockChevy #Flowmaster #Borla #CustomExhaust #StainlessExhaust #TruckBuild
Product links:
Exhaust tip: amzn.to/4v2dhud
2.5in-3in y-pipe: amzn.to/4e0sPst
3in stainless exh kit: amzn.to/4okKZbT
borla muffler: amzn.to/4fCWMjB
As an Amazon Associate, we earn from qualifying purchases
We appreciate you guys watching! If you wanna help fuel the builds... and the bad decisions, click below!
Merch Link:
Store Front: bonfire.com/store/j2-garage-worx
Street Series shirts: bonfire.com/j2garageworx-street-series
Music Attributes:
N0SGACEZUIZMXXLH - octane
DQ50FVXZBCDR2TM6 - black hog
IVDHNVOEM01GWAWP - sweat n steel
OG0ZOJ7YA42DATKU
UD3D1EH6K9CLTKSH
Which muffler sounds best on a 454 dually—the Flowmaster Flow FX or the Borla Pro XS?
In this episode, we tackle another project on our 1991 Chevrolet C3500 dually. The old exhaust had seen better days, so we decided it was time to build a brand-new custom stainless steel exhaust system and find out which muffler sounds best behind a big block Chevy.
After fabricating the new system, we put the Flowmaster Flow FX and Borla Pro XS head-to-head in a real-world sound test. One of them earned a permanent spot on the truck... but you'll have to watch to find out which one made the cut.
Whether you're into OBS Chevys, GMT400 trucks, fabrication, towing rigs, drag racing, or just keeping old iron on the road, we're glad you're here.
👇 Let us know in the comments:
Flowmaster or Borla—which one would you choose?
Thanks for following along with our journey as we build, repair, race, and enjoy these machines together.
🔧 1991 Chevrolet C3500 Dually
🔥 454 Big Block Chevy
🛠️ Custom Stainless Exhaust Fabrication
🎵 Flowmaster Flow FX vs Borla Pro XS Sound Test
Faith • Family • Fast Cars
#J2GarageWorx #GMT400 #OBSChevy #C3500 #454Chevy #Dually #BigBlockChevy #Flowmaster #Borla #CustomExhaust #StainlessExhaust #TruckBuild
Product links:
Exhaust tip: amzn.to/4v2dhud
2.5in-3in y-pipe: amzn.to/4e0sPst
3in stainless exh kit: amzn.to/4okKZbT
borla muffler: amzn.to/4fCWMjB
As an Amazon Associate, we earn from qualifying purchases
We appreciate you guys watching! If you wanna help fuel the builds... and the bad decisions, click below!
Merch Link:
Store Front: bonfire.com/store/j2-garage-worx
Street Series shirts: bonfire.com/j2garageworx-street-series
Music Attributes:
N0SGACEZUIZMXXLH - octane
DQ50FVXZBCDR2TM6 - black hog
IVDHNVOEM01GWAWP - sweat n steel
OG0ZOJ7YA42DATKU
UD3D1EH6K9CLTKSH
