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Flowmaster Delta 40 Reviews, Ratings, Specs & Prices
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Flowmaster Delta 40

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Rating:

Product Information

MSRP: $180.00
Average Price: $99.43
Manufacturer: Flowmaster
Recommended?
Yes: 21 / No: 0

Offers the same sound outside as the Super 40, but reduced interior noise.

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loyd1957
Registered User
loyd1957's Reviews
02-08-2014, 07:13 PM
Price: $150.00
Pros: Great sound, more mpg
Cons: None
Recommended? Yes

Comments: Great sounding muffler, very reasonably priced, mine was free. Lol.


jragan89
Registered User
jragan89's Reviews
05-24-2012, 01:55 AM
Price: $150.00
Pros: great sound when the engine is warm
Cons: if you start it right up and get on it, it will sound like a rice rocket. not quite in the cabin
Recommended? Yes

Comments: turning the jeep on and lightly gasing it makes a great sound. and once the pipes and engine are warm, floor it for a mean sounding jeep. but if its cold, go slow, or it will sound HORRIBLE.


greendesign
Registered User
greendesign's Reviews
01-26-2012, 03:04 PM
Price: $70.00
Pros: Sounds great, but sounds even better when you add a high flow cat. No cab resonation
Cons: None
Recommended? Yes

Comments: Great muffler for a great price. It really makes this jeep sound like a v8 is supposed to.


Esgar
Registered User
Esgar's Reviews
08-22-2011, 05:17 PM
Price: $1.00
Pros: Better flow over stock, better build quality
Cons: A bit of a drone between 1700 and 2000RPMs, livable though
Recommended? Yes

Comments: Got the muffler for free from a friend when I did my H.O. swap. It definitely has a better tone than the glass-pack I was running. I'm not sure if it flows as well, but it's also got bigger piping. It's taken one hell of a beating so far, and just keeps right on going. The drone is mild to moderate except at certain RPM/engine load combinations, nothing horrible.


Avor

Registered User
Avor's Reviews
08-07-2011, 12:32 PM
Price: $100.00
Pros: Good sound
Cons: None
Recommended? Yes

Comments: Needed to replace my muffler and bought this as a replacement. Good sound. It's louder than stock, but you aren't going to be waking up the neighbors.

I suggest finding sound clips on YouTube of various I6 Jeeps with different Flowmasters so you know what you'll be getting.


MoSutty
Registered User
MoSutty's Reviews
07-12-2011, 12:00 PM
Price: $80.00
Pros: Loud, beefy sound
Cons: Drone at certian rpms
Recommended? Yes

Comments: Stock muffler rusted through a couple years ago so I started shopping around and realized you could get a flowmaster for a better price than a oem. So found one for $80 instead of their usual $100 or so. Had to get a little piece of 2.25" extender because the flowmaster is shorter than stock. Sounds good, plently loud, gives it a decent low rumbling sound. A little obnoxious at certian rpms as the cabin can get pretty loud but it doesn't happen to me at highway speeds so can't complain too much. Definitely loud though do not worry about it having enough volume.


ecm
Registered User
ecm's Reviews
05-12-2011, 08:54 PM
Price: $300.00
Pros: Increased mpgs and performance. Much better sound than stock.
Cons: None.
Recommended? Yes

Comments: I have the Rusty's TJ Flowmaster Delta Flow 40 cat back exhaust and it is one of the best things I did to increase the performance of the 4.0. It fit perfectly and after 5 years of use in Chicago's nasty, salty winters, is almost as good as new. No joke. Rusty's puts out a quality exhaust system that will outlast what you could have bent up at a muffler shop.


pyro8541
Registered User
pyro8541's Reviews
11-16-2010, 04:30 PM
Price: $250.00
Pros: Great sound, Awesome performance
Cons: none
Recommended? Yes

Comments: Everything about the muffler and new pipes rock!!


trailkingzj
Registered User
trailkingzj's Reviews
07-24-2010, 07:32 AM
Price: $60.00
Pros: awesome
Cons: none
Recommended? Yes

Comments: sounds good, really loud


KINGSB

Registered User
KINGSB's Reviews
06-14-2010, 09:14 PM
Price: $80.00
Pros: Nice Loud Sound.
Cons: None.
Recommended? Yes

Comments: The muffler has a very nice loud sound!


KINGSB

Registered User
KINGSB's Reviews
06-14-2010, 09:13 PM
Price: $80.00
Pros: Nice Loud Sound.
Cons: None.
Recommended? Yes

Comments: Nice very loud sound!


Spoons896
Registered User
Spoons896's Reviews
05-21-2010, 11:56 PM
Price: $50.00
Pros: Sounds good
Cons: The PO put a pipe that was to big to fin in between the skid plate and the body so it rubs the skid plate at low RPMs
Recommended? Yes

Comments: The PO put a pipe that was to big to fin in between the skid plate and the body so it rubs the skidplate at low RPMs. but sounds great for a 4banger


danieljeep88
Registered User
danieljeep88's Reviews
03-06-2010, 12:55 PM
Price: $200.00
Pros: All
Cons: None
Recommended? Yes

Comments: This is sweeeeet


northernbound
Registered User
northernbound's Reviews
02-23-2010, 03:47 AM
Price: $1.00
Pros: improved over stock
Cons: sound could be better
Recommended? Yes

Comments: I have limited use of the product so far in order to give a fair evaluation.


YWU

Registered User
YWU's Reviews
10-31-2009, 10:22 PM
Price: $1.00
Pros: Nice sound
Cons: None
Recommended? Yes

Comments: Love the sound. Really love to downshift and engine brake downhill, sounds great. I don't know if I get better performance and don't really care. My son thinks I'm cool!

I don't remember the price but it wasn't bad. Maybe 120-150 installed.


KillaKeys17
Registered User
KillaKeys17's Reviews
06-21-2009, 10:34 AM
Price: $45.00
Pros: Sounds Great at idle and when on the throttle
Cons: ...it's not quiet anymore!..
Recommended? Yes

Comments: I bought just the muffler to save on money...sounds great but if you want to utilize the hp gains then do the 3" highflow cat back


UrbanOffRoad124

Registered User
UrbanOffRoad124's Reviews
06-03-2009, 02:51 AM
Price: $69.99
Pros: Good old Flowmaster!
Cons: It's a Flowmaster
Recommended? Yes

Comments: Sounds nice without to much drone inside. The Delta 40 doesn't resonate as much as the 40 Series. Flowmasters are cheap and if you have a welder, why pay someone else.


jeepin_98
Registered User
jeepin_98's Reviews

11-24-2008, 09:20 PM
Flowmaster Delta 40
Price: $20.00
Recommended? Yes

Comments: Very happy with the sound of this muffler combined with my Banks header and K&N intake it opens up my exhaust and really makes the muffler sound good.


CShepard
Registered User
CShepard's Reviews

11-10-2008, 07:54 PM
Flowmaster Delta 40
Price: $180.00
Recommended? Yes

Comments: Great mild tone that really brings out the Inline 6. Mild increases in power and gas mileage.


turbovelocity
Registered User
turbovelocity's Reviews

09-29-2008, 09:06 AM
Flowmaster Delta 40
Price: $100.00
Recommended? Yes

Comments: What do I really have to say , its a Flowmaster . Instant torque and horsepower , and that was just when I set the box in the front seat before the install !!


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