Flowmaster Mufflers 40 Series Delta Flow

2009 F150 with a Rumble

Posted on 09/13/2009 by Mark M. - 2009 Ford F-150 (Ada,OK)

0 of 0 people found the following review helpful.

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"Had my Flowmaster 40 Series Delta Flow installed at a local muffler shop and what a difference!! I used my stock exhaust pipe and reconnected the stock tailpipe as well and am not diappointed. It took just a bit to get used to the markedly increase exhaust note but it sounds great! Very deep tone with just a slight amount of interior resonance around 2000rpm."

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2005 Ram, Quad Cab, 4x4, Hemi

Posted on 08/10/2009 by David C. - 2005 Dodge Ram (Conifer,CO)

3 of 3 people found the following review helpful.

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"I recieved the muffler in short order and had a local shop weld it into place. The Flowmaster is only about half the length of the original stock muffler, which is the size of a Smartcar....lol. I have not noticed any increases in power or economy, but the sound is the real reason for getting one of these. I originally took the resonator off when the Flowmaster was installed, but this created a loud drone in the cab between 1400 and 2000 rpm. The sound was awesome, but I had to re-install the resonator to quiet the cab down. The tone is still awesome though. All in all, very happy with this product."

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40 Series Delta Flow - a great compromise

Posted on 04/24/2009 by Brayton G. - 2003 Chevy Corvette (Walton,NY)

3 of 3 people found the following review helpful.

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"Just what you said. Good exterior sound, less cabin noise. I'm happy."

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2005 GMC SIERRA 1500 SLT

Posted on 09/16/2008 by Pawel S. - 2005 GMC Sierra (Fort Walton Beach,FL)

4 of 9 people found the following review helpful.

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"I love it . That`s what I wanted !!!"

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new truck

Posted on 08/14/2008 by Schon W. - 2005 Ford F-150 (Olympia,WA)

4 of 8 people found the following review helpful.

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"had straight pipes and was to much for me this was a good sound with out to much"

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Flowmaster 40 series

Posted on 08/12/2008 by John L. - 1996 Mitsubishi 3000GT (Sheboygan,WI)

4 of 6 people found the following review helpful.

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"Sounded great! Very easy to install and worked great with a dual tip set up. Made my car sound more aggressive and noticeable. Caught a lot of people's attention on the road."

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Flowmaster 40 delta flow review

Posted on 08/08/2008 by Mickey D. - 2001 Dodge Durango (Simi Valley,CA)

3 of 5 people found the following review helpful.

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"I really enjoy my new muffler. The sound is awesome, nice deep tone :). makes my 2001 dodge durango look and sound tuff. only thing that bothers me is that they didnt have the muffler in stainless steel but in aluminum, its not that big of a problem though because flowmaster change their warranty to 10 years. but other wise really great product would recommend to anyone."

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Great Sound

Posted on 07/25/2008 by John A. - 2005 Subaru Impreza (Delta,CO)

3 of 4 people found the following review helpful.

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"I put this muffler on my subaru impreza outback sport and man does it sound mean. I went out on a limb when I bought it because I had not found any videos or recordings of flowmaster mufflers on subarus but the sound i got is very satisfying."

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Flowmaster 40 Series

Posted on 05/23/2008 by John M. - 2007 Ford Mustang (Las Vegas,NV)

10 of 10 people found the following review helpful.

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"I've had the Flow 40 Delta on my 2007, v6 Mustang for a few weeks now and they sound amazing. They are loud enough on the outside and resonate just enough on the inside to be fun and not give me a headache. I even drove from Las Vegas to Denver without any problems or annoyances. If you are looking for a great muffler with very good sound, go with this one. I searched for months before I settled on the Flow 40's and I couldn't be happier. Also cheap instal and I had a chrome tip welded on that really completes the look."

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Great Flow

Posted on 04/27/2008 by Nick D. - 2003 Chevy S10 Pickup (Murfreesboro,TN)

4 of 4 people found the following review helpful.

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"Great muffler for the price...sounds great and has that deep growl at idle too."

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nice soud with better fuel economy

Posted on 04/10/2008 by Jason F. (Eagle Mountain,UT)

2 of 2 people found the following review helpful.

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"This flow master has a very nice sound not too loud for my wife when she rides inside the cab of our 2004 chevy short bed v8, and I noticed an immediate difference in power and fuel economy well worth the price it would have been better if it cost less but... still worth it!"

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SUPER 40'S DELTA FLOW!!!

Posted on 04/10/2008 by Treston S. - 1991 Toyota Pickup (East Wenatchee,WA)

1 of 1 people found the following review helpful.

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"All i can say, is that everytime i start my truck and take off ; It gives a beautiful mellow sound that puts a huge grin across my face. It was exactly what i wanted, i got the delta flow cuz I didn't want it to be super loud but have a mellow sound. And it matched the sound i was looking for. Also gave better acceleration on highway up hill and don't have to downshift to fourth as quickly. not sure about milage, I love the sound so I kinda have a heavy foot for the gas pedal. all a round its an awesome product and i'm very happy to have purchased it!!!"

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08 Tacoma w/Flowmaster 40 Series Delta Flow

Posted on 04/10/2008 by Aaron M. - 2008 Toyota Tacoma (Merced,CA)

3 of 4 people found the following review helpful.

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"Awesome muffler. I put this muffler on my 08 Tacoma Dbl Cab 4.0 V6. Wasn't sure if i liked the tone at first but like everyone says it works itself in. Sure enough after putting some miles on it, it sounds completely different. Exactly the sound i was looking for. I'm glad i made this choice."

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nice sound

Posted on 04/08/2008 by Todd ` S. (Kittanning,PA)

4 of 4 people found the following review helpful.

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"this 40 series has a very nice external sound but does get loud on heavy throttle. interior resonance is a bit more than anticipated on pullout but very minimal at cruising speed."

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AMAZING!!!

Posted on 03/25/2008 by Jeremy A. - 2005 Dodge Ram (Manchester,TN)

1 of 1 people found the following review helpful.

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"I JUST INSTALLED MY FLOWMASTER 40 SERIES DELTA FLOWS AND I COULD NOT BE HAPPIER! THEY ARE THE BEST SOUNDING FLOWMASTERS THAT I HAVE EVER OWNED! THERE IS SOME NOISE INSIDE THE CAB AND A BIG GROWL OUTSIDE THE CAB. I DON'T THINK THAT FLOWMASTER COULD HAVE MADE A BETTER MUFFLER FOR MY HEMI."

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Great mufflers

Posted on 03/14/2008 by Khaled A. (Sabah Alnaser,kuwait)

4 of 7 people found the following review helpful.

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"I was worried that after installing it on my 2004 crown vic it would create very high noise, but I got an amazing deep cool sound, %100 as what I wanted. it was also easy to install. I am glad I choosed the flowmaster 40 delta flow series. Khaled.A, Kuwait."

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Great Build but Excessive Drone

Posted on 03/13/2008 by Ruben T. - 2007 Dodge Charger (Gilbert,AZ)

5 of 10 people found the following review helpful.

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"I installed this muffler on a 2007 Dodge Charger. I had to replace it with a Magnaflow muffler instead due to the amount of drone it created."

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07 chevy 6.0

Posted on 02/19/2008 by Chad D. - 2007 Chevy Silverado (Okc,OK)

2 of 2 people found the following review helpful.

"If your'e looking for muffler that doesn't produce alot of interior noise this is the one for you. Still has a nice rumble on the outside but not to loud."

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Best improvement for the money.

Posted on 01/10/2008 by Scott J. L. - 2006 GMC Sierra (Syracuse,NY)

8 of 10 people found the following review helpful.

"Ordered online and saved 50%versus local dealer.Had installed at shop for $60.00. Make sure you get muffler a quarter inch bigger than exhaust so as not to restrict the volumn.Great sound and noticed better all around perf.improvement.Very pleased."

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very loud!

Posted on 10/23/2007 by Jeremy A. - 2002 Toyota Tundra (San Diego,CA)

3 of 8 people found the following review helpful.

"I installed this on my 2002 tundra 4.7l. this thing screams!"

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Flowmaster 40 Series

Posted on 10/16/2007 by Matthew S. - 2000 Honda Accord (Akron,OH)

3 of 8 people found the following review helpful.

"I ordered two of these mufflers, and they are the best ones that I have come across, they sounds great, and I noticed a little better performance as well."

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Flowmaster 40 Series Delta Flow

Posted on 09/19/2007 by Lisa K. - 1970 Ford F100 (Independence,KS)

11 of 12 people found the following review helpful.

"These mufflers sound great! They have a mean low growl that isnt to noticeable on the inside..but once you get outside it sounds meeaann!"

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My Bronco came alive!

Posted on 09/11/2007 by Scott W. - 1979 Ford Bronco (Ponca City,OK)

4 of 5 people found the following review helpful.

"When bolted on, I could hear and feel a difference over the stock single exhaust. The exhaust was upgraded to a dual system. They say "if you can make a motor breath better, it will perform better""

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Flowmaster 40 series Delta Flow

Posted on 08/15/2007 by John Y. - 1968 Pontiac Firebird (Novi,MI)

5 of 8 people found the following review helpful.

"These mufflers sound good outside of the car. They give the car a nice growl. I have a 1968 Firebird with a 400 engine. A little more resonance inside of the car than I expected. I am running 2 1/2" exhaust."

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Mustang Growl !

Posted on 08/15/2007 by Thomas T. - 1997 Ford Mustang (Carolina Shores,NC)

5 of 7 people found the following review helpful.

"The flowmasters gave my '97 cobra a very distinctive exhaust note, the " Mustang Growl" I like to call it. The 32V engine combined with the Delta-flow 40 mufflers make beautiful music together.I've owned this car for 3 1/2 yrs, and I'm sorry I waited so long to replace the stock mufflers. Thanks Flowmaster !"

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