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Go Back > Reviews > Engine > Exhaust > FlowMaster Super 40 series

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FlowMaster Super 40 series Reviews, Ratings, Specs & Prices
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FlowMaster Super 40 series

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Product Information

MSRP: $350.00
Average Price: $108.76
Manufacturer: FlowMaster
Yes: 80 / No: 0

This muffler has a very good sound. I am using the 2 1/2 inch tubing and duel exhaust and the mufflers sound great. They are a little loudr then the regular 40 series.


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Registered User
jgarofalo's Reviews
05-13-2011, 12:23 PM
Price: $100.00
Pros: Sounds amazing with the 4-cyl
Cons: none
Recommended? Yes

Comments: Its a flowmaster what can i say, it has a very good sound.

Registered User
Joes4x4ZJ's Reviews
05-09-2011, 06:04 PM
Price: $125.00
Pros: sounds great
Cons: nothing
Recommended? Yes

Comments: i like my exhaust

Registered User
YJoe1993's Reviews
01-18-2011, 03:29 AM
Price: $130.00
Pros: Loud deep sound, throttle response increased a bit
Cons: Not loud enough on high way
Recommended? Yes

Comments: Its a flowmaster what can i say


Registered User
Kitchen's Reviews
12-25-2010, 08:56 PM
Price: $100.00
Pros: Sounds Good.
Cons: None.
Recommended? Yes

Comments: Easy to weld, Sounds great, saves gas.

Registered User
jlayton4's Reviews
10-19-2010, 03:20 AM
Price: $100.00
Pros: excellent sound
Cons: none
Recommended? Yes

Comments: great sound, not really a notice in the power though. but would recommend if you want a good sounding jeep!


Registered User
Nberry90's Reviews
09-21-2010, 05:04 PM
Price: $103.99
Pros: sounds great, grumbles
Cons: a little loud when picking up speed
Recommended? Yes

Comments: this muffler has a throaty sound, and makes people turn heads when your going by. it sounds great when your driving and has low resonance when at cruizing speed. the only problem i have is that i instlled a kickdown tip so it exits under the cab so it is louder.


Web Wheeler
dukie564's Reviews
03-19-2010, 01:55 PM
Price: $80.00
Pros: Great Sound, easy to install
Cons: None so far
Recommended? Yes

Comments: Great improvement in sound - added a custom 2.5" mandrel bent exhaust tailpipe to it

Registered User
jbozz17's Reviews
01-06-2010, 01:41 PM
Price: $120.00
Pros: sounds almost like a v-8
Cons: none
Recommended? Yes

Comments: sounds good n deep, big power gains, some thought i had a v-8

Registered User
FST1994ZJ's Reviews
11-16-2009, 12:38 PM
Price: $200.00
Pros: Good sound Good HP boost
Cons: Hard to sneak out
Recommended? Yes

Comments: I got this super 44 exhaust a little while ago and have been super happy with it ever since. It has amazing sound at start up! and the idle sound very beasty. I have a 5.2 liter v8 so i recommend it on the engine i havent heard it on a straight six or inline 4. I would definatly get one if these if you dont have one. When im at a stop light and i punch the gas you can hear my car down the street.

Registered User
Rdomings's Reviews
11-06-2009, 01:38 PM
Price: $230.00
Pros: loud as all hell with that staple "flowmaster sound"
Cons: With a cat delete, the droning can be a little annoying on the inside, in mid-second gear, but other than that, nice and quiet.
Recommended? Yes

Comments: * PRiCE STATED WAS FOR THE TOTAL INSTALL VIA LOU'S CUSTOM EXHAUST, NORTH READING, MA* The build up was: removed collector precat (precat delete pipe) stock cat 2.50" mid pipe, flowmaster super 40, 2.50" open bent tailpipe, to a welded 4" magnaflow chrome tail truck tip.

Registered User
VolcomPunk's Reviews
09-13-2009, 11:57 PM
Price: $240.00
Pros: Less airflow restriction, Louder sound (Haha),
Cons: Sometimes can be a little to loud at night....say at like 3 in the morning
Recommended? Yes

Comments: The only reason my exhaust is loud is due to that i took the cat-converter off so it goes straight from the Y-pipes to the muffler and out either side before the back tires. Overall I'm very pleased with it. I do recommend getting a K&N air filter as with any new exhaust system could screw up your gas mileage. And if you don't want it extremely loud, then keep the cat-converter (whatever brand you prefer if you don't want a stock one)

Registered User
mckenzie_t's Reviews
09-01-2009, 09:40 PM
Price: $90.00
Pros: sounds great
Cons: non so far
Recommended? Yes

Comments: sounds great, nice deep sound


Registered User
kmk108's Reviews
06-29-2009, 01:01 AM
Price: $79.00
Pros: great sound, good price
Cons: none
Recommended? Yes

Comments: I got this muffler put on when i found out my stock one had a hole in it. I love the sound of the v8 with this. What i love about this muffler is that its loud outside the jeep and when accelerating, but while traveling at highway speeds and cruising, the muffler is not anymore noticeable than the stock muffler. great muffler

Registered User
Cdn96XJ's Reviews
06-24-2009, 12:26 PM
Price: $100.00
Pros: Looks great and sounds amazing.
Cons: None.
Recommended? Yes

Comments: I have this muffler in a 2.5 inch exhaust with headers and a high flow cat. This setup leaves for an absolutely amazing sound. At low RPM it sounds like a small V8 or diesel inline 6, and in the higher range sounds like a $200,000+ exotic such as a Maserati or Lamborghini.

Registered User
MelloYello32's Reviews
06-16-2009, 09:39 PM
Price: $50.00
Pros: great throaty sound.
Cons: weld in recommended.
Recommended? Yes

Comments: I love the sound.

Registered User
JohnBarleycorn's Reviews

03-23-2009, 06:43 PM
FlowMaster Super 40 series
Price: $210.00
Recommended? Yes

Comments: For starters if all you want is sound this is a 10. It gives the 3.8 a little growl across the rpm range. That being said performance gains were minimal so as long as you don't expect to much in that category its a good buy.

Registered User
itsgroll's Reviews

03-20-2009, 12:54 PM
FlowMaster Super 40 series
Price: $200.00
Recommended? Yes

Comments: great! not to soft. not to loud. it rumbles when i start it up, nice on the highway. girlfriend approves hahahaah

Registered User
lavajava's Reviews

03-14-2009, 07:44 AM
FlowMaster Super 40 series
Price: $200.00
Recommended? Yes

Comments: did away with it and now just have the straight pipe all the way. Like it much better............................................ ..........................................


Registered User
4pointOH1998's Reviews

03-04-2009, 07:04 PM
FlowMaster Super 40 series
Price: $90.00
Recommended? Yes

Comments: Good rumble. Gives the Jeep that grunt sound that I've been looking for .


Registered User
theblackjeep98's Reviews

02-04-2009, 08:01 PM
FlowMaster Super 40 series
Price: $110.00
Recommended? Yes

Comments: the best thing i ever got
its so loud
and awesome wouldnt ever get anything else
extremely satisfied w/ it

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