Flowmaster 40 Series vs Borla Pro XS on SBC 350 

Matt Damon!

I had a Borla on my truck when I did construction. Going from site to site @5:00AM driving through the French Quarter every day, sounded amazing!

Already putting Pro XSs on my rig (having them installed over the weekend), but you confirmed that they can be acceptably quiet when you want and louder when you don't. Thanks for the video...!

lol " dont take my advice unless your REALLY desperate " I need a T-shirt that says that, asap.

I need a sweet billet mirror. 👍🏻 Thanks for the video. I’ve got Flowmaster 40 series on a 55 Chevy but was considering making a change to Borla just to be able to have a conversation in the car. This video pretty much made up my mind. Thanks again!

Putting these on my Big block Chrysler 361, so excited! EDIT: The Borla pro XS muffler on the car almost sounds straight piped, After i installed the muffler, there was some drone and rasp control.

I need that billet mirror for my c-10 im redoing thats why im watching your exhaust videos!!! Well done son!!!!!

No comparison. Louder isn’t always better. The Borla Pro XS is the best sounding and quality budget muffler you can buy.

Good videoZach 👍... I'm over 50 years of age with a 96 WS6 383... I'm not ready to stop disturbing the piece yet 😁... Badass truck by the way 🇺🇸🇺🇸👍

The Borla sounds better in my opinion, even if it is quieter. Maybe deeper too as well.

Making them come out the back would definitely quiet it down inside the cab

Great video I think Go with the Borla as well

Nice comparison! Thanks.

Did you notice any difference in power. I have a 67 Buick with duals and Flowmaster 40s. Was there any weight savings with the Borla.

Nice Truck

The first thing I do to a car or truck is remove those rusty chambered Flowmasters and replace them with a complete mandrel bent stainless exhaust with Borla straight through mufflers. Borla mufflers have a deep even tone unlike Flowmasters that have a drone at a certain rpm. There is no way anyone can ever convince me that a Flowmaster with it's unpredictable chambers could be a tuned muffler. A straight through design is much more predictable and sounds much better. That drone at about 2200 to 3000 rpm proves that a Flowmaster doesn't work throughout the rpm range of any motor. I have seen too many perfect stainless exhaust systems ruined with those rusty Flowmasters. But it's your vehicle and your money.

Man I’ve got Doug’s long tube part# D310 on my ‘86 with 2.5” Black Widows ran all the way out the back curved down behind the back tires.., I’m close to having to wear ear plugs especially when you stomp it. Loud clap kinda sound till after the stall kicks in. Are these the Borla Pro XS, or XR 1’s? I don’t know which way to go anymore, and I’d like to stay away from flowmasters too, I’ve run them for 20 years and just about tired of those I know that. I don’t care about the neighbors or anything, but it’d be nice not to almost need a set of ear plugs in it and be able to talk. You have to holler to talk out of the truck when you’re behind it idling lol.. I’m thinking about doing a H Pipe, it may tone it down some, but I’m sure will still be too much. New Sub by the way 👍🏼👍🏼

Great switch chokemaster 40 series are to restricted not a good flowing muffler for performance setups straight through exhaust are the way to go specially 3" in diameter

Flowmaster for life!!!💪💪💪💪

Borla all the way

What is that idle noise called I can hear inside your car while you are talking in the beginning? It souds very metallic.. I have this noise on my coupe when I straight pipe or have a freeflowing muffler. Usually most trucks have this idle noise but I didn't want it on my coupe.

it may be louder and call me crazy but it seemed like the 40 series gave you better acceleration imo

Borla 👍🏼👍🏼

Sounds good. What seats and console do you have in there?

you have a headers with the borla ?

Will this Borla exhaust be good with ktuned headers with just straight pipe? Its gonna be on a Honda civic with a jdm K24a. I currently have it straight piped with an Amazon muffler. To loud!

Open headers would make it alot easier to talk to you're wife 😳🤔😂😂😂

I know this is a two year old vid but... i know for a fact if you ran tail pipes out the back with the Flowmasters it would knock down the drone quite a bit. I run nothing but chambered mufflers, from a ELCO with small block, headers and single chambers, my 07 sierra with a black widow angry housewife, my 94 silverado with no cat and a flowmaster super 10, and a 95 suburban with 454 no cat and a flowmaster 3 chamber, every one of them have tail pipes, no drone at all.

Are you in north west ok?

Chris Pine doing Muffler reviews now?

Any torque/hp loss at all with the Borla Pro XS mufflers? Thank you for the response!

Do these work on a crown vic

Idle flowmaster win At WOT borla win

You made a good choice, dronemasters get old, I had the 40 and then super 10 both awful

What part of okie u from

Do you have a cat

2:05

Jason Bourne...

I am 3 years late for the giveaway. :/

Put neighbor haters lol

I’ll need you to do a magna flow test as well sir 😜

Get Flowmaster super 10

flowmasters SUCK! The Borlas sound great! Rock on!

Thanks my 40 series are bugging my neighbors

FJB