8.1 exhaust questions
#11
its two different mufflers.
The spinn tech is a better quality looking muffler.. it look like a freaking robot from that tv show where fight each other.
The flow master is well a flow master... they seem to last a few years and then you get another one... also know as blowmaster because they seem to blow out... brad has a 8.1L truck and it melted the baffles in the his flow master in 30K miles... with you towing a lot im not sure it would last that long... guess thats why they are "cheap" mufflers.
this is a cold start with the flow master, granted i have long tube headers, "high flow" cats which makes it louder..
http://www.youtube.com/watch?v=6duId...er_profilepage
this why i had to take it off! after the cam swap
http://www.youtube.com/watch?v=nSYHj...er_profilepage
then when the blower went on it got about 50 louder than that lol..
Ill see if i have a clip of the spinn tech... on the truck... its louder than stock but not omg loud.. then when you hammer the it sounds a lot like chamberd side pipes on my vette.
The spinn tech is a better quality looking muffler.. it look like a freaking robot from that tv show where fight each other.
The flow master is well a flow master... they seem to last a few years and then you get another one... also know as blowmaster because they seem to blow out... brad has a 8.1L truck and it melted the baffles in the his flow master in 30K miles... with you towing a lot im not sure it would last that long... guess thats why they are "cheap" mufflers.
this is a cold start with the flow master, granted i have long tube headers, "high flow" cats which makes it louder..
http://www.youtube.com/watch?v=6duId...er_profilepage
this why i had to take it off! after the cam swap
http://www.youtube.com/watch?v=nSYHj...er_profilepage
then when the blower went on it got about 50 louder than that lol..
Ill see if i have a clip of the spinn tech... on the truck... its louder than stock but not omg loud.. then when you hammer the it sounds a lot like chamberd side pipes on my vette.
#12
its two different mufflers.
The spinn tech is a better quality looking muffler.. it look like a freaking robot from that tv show where fight each other.
The flow master is well a flow master... they seem to last a few years and then you get another one... also know as blowmaster because they seem to blow out... brad has a 8.1L truck and it melted the baffles in the his flow master in 30K miles... with you towing a lot im not sure it would last that long... guess thats why they are "cheap" mufflers.
this is a cold start with the flow master, granted i have long tube headers, "high flow" cats which makes it louder..
http://www.youtube.com/watch?v=6duId...er_profilepage
this why i had to take it off! after the cam swap
http://www.youtube.com/watch?v=nSYHj...er_profilepage
then when the blower went on it got about 50 louder than that lol..
Ill see if i have a clip of the spinn tech... on the truck... its louder than stock but not omg loud.. then when you hammer the it sounds a lot like chamberd side pipes on my vette.
The spinn tech is a better quality looking muffler.. it look like a freaking robot from that tv show where fight each other.
The flow master is well a flow master... they seem to last a few years and then you get another one... also know as blowmaster because they seem to blow out... brad has a 8.1L truck and it melted the baffles in the his flow master in 30K miles... with you towing a lot im not sure it would last that long... guess thats why they are "cheap" mufflers.
this is a cold start with the flow master, granted i have long tube headers, "high flow" cats which makes it louder..
http://www.youtube.com/watch?v=6duId...er_profilepage
this why i had to take it off! after the cam swap
http://www.youtube.com/watch?v=nSYHj...er_profilepage
then when the blower went on it got about 50 louder than that lol..
Ill see if i have a clip of the spinn tech... on the truck... its louder than stock but not omg loud.. then when you hammer the it sounds a lot like chamberd side pipes on my vette.
Thanks
Tim
#13
ok anyone else have any Ideas here on a muffler? I have been told here in town that the only one to put on this truck is a Flo-Pro, but they want 350 for the thing at all the local muffler shops. Do any of you have any other Ideas?
#14
Staging Lane
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flo pro
I too am considering the flo pro HD oval for my 05 8.1 Burb. The 2500 says it is like stock, both inside and out, but I read a post by a guy running a muffler shop somewhere, that had a clip of the 2500 sound and it was nice. May have been on gmfs forum. Anyhow, teh 2506 looks interesting too. i want mild sound, that doesn't kill me inside like the magnaflow I had on my 5.3 PU.
#15
I too am considering the flo pro HD oval for my 05 8.1 Burb. The 2500 says it is like stock, both inside and out, but I read a post by a guy running a muffler shop somewhere, that had a clip of the 2500 sound and it was nice. May have been on gmfs forum. Anyhow, teh 2506 looks interesting too. i want mild sound, that doesn't kill me inside like the magnaflow I had on my 5.3 PU.
One interesting thing though, the stock muffler is a dual out, but the bank on the driver side is completly blocked. They make it look like a dual out but in reality it is only a single with a pipe welded to it. now I have a true dual system and I think that is where I notice the most difference.
#16
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flo pro
thanks. that is interesting about the blocked off side. but, the flo pro website shows the 2505 to be "moderate" in sound outside the truck. that is why I was considering the 2506, because their site shows less sound. But, if it is hardly noticeable on the one you have, and it is the 2505- I would think the 2500 or 2506 is no louder than stock. That is not what I am looking for. How much did they charge ya and what part of the country are you in?
#17
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yes, the stock mufler is a dual in, dual out muffler, but 1 of the exits is a dummy pipe that doesnt exit anywhere.
I used to think that this was blocked off on the 6.0 HD's to provide a tad more backpressure for teh smaller engine as the 8.1 and 6.0 HD trucks use the same dual 3" exhaust.
Apparently the dummy pipe is present on both engines. It must be for some sort of exhaust resonace tuning or something.
peace
Hog
I used to think that this was blocked off on the 6.0 HD's to provide a tad more backpressure for teh smaller engine as the 8.1 and 6.0 HD trucks use the same dual 3" exhaust.
Apparently the dummy pipe is present on both engines. It must be for some sort of exhaust resonace tuning or something.
peace
Hog
#18
Yeah the shop I dealt with said it was for resonance. I used the 2505 and it is no louder in the cab than stock and at idle it is not really louder than stock it just has a deeper tone. Towing a stock trailer full of cattle up a 6% grade today with the passenger window down and right next to the Jersey barrier it is just a deeper tone but no bark to it really. I like it and it seems to flow better. and I dont have any backfires like the rotted out stocker.
I am in Washington state up by spokane. and I got it for 200 installed
I am in Washington state up by spokane. and I got it for 200 installed