Bah. Keeps 'em quiet.
CK5
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For those who have a y-pipe exhaust
- Thread starter Cornfield creations
- Start date
Cornfield creations
1/2 ton status
Well I worked on it today swapping different mufflers. I even recorded the different sounds so others can maybe get an idea what they would want. For my setup I had it down to the flowmaster super 50 series, and a Magnaflow 5x11x22.
Magnaflow was the winner for me
It's really interesting the power difference you can feel when you have so many mufflers to swap in a row. I actually threw in a flo-pro 3 chamber, and also a flowmaster super 40.
I will collaborate the clips into one video and post a link for you all to listen. May be a couple days.
Magnaflow was the winner for me
It's really interesting the power difference you can feel when you have so many mufflers to swap in a row. I actually threw in a flo-pro 3 chamber, and also a flowmaster super 40.
I will collaborate the clips into one video and post a link for you all to listen. May be a couple days.
Sounds like you drove them around with the different mufflers?
Thoughts on which were more "performance" and which were more noise?
Thoughts on which were more "performance" and which were more noise?
Cornfield creations
1/2 ton status
I drove with two mufflers, the Flowmaster super 50, and the magnaflow that is the keeper I have on it now. The rest were slipped on and revved up to listen to. Some I didn't even have as a choice, I just put them on to record a sound clip.
The ones I felt were more restrictive were the:
Flowmaster 70 Series BBII- throttle response was sluggish
Flowmaster Super 40
Flo-pro 3 chamber.
I could tell which felt snappier just in the shop,
The initial magnaflow, and the one I ended up leaving on. Obviously there is no change in flow patterns. The Flowmaster Super 50 was the only Flowmaster that actually felt good. I actually test drove with this muffler, although the lower end felt good, When I reached a higher RPM 2700+ it felt like it was being held back. My blazer operates down the highway at around 2600-2800 so it felt like it was being choked at that level.
Sound wise the Super 50 had a quieter tone, but wasn't quiet enough inside for me, and personally since out of the 14 years of having this blazer never had a chambered muffler sound on it, I didn't feel like it fit.
The 5x11x22 Magnaflow is a huge muffler obviously, and barely fits between the frame and driveshaft. At highway 60-70 the tone level was so much more pleasing. The problem area 50-60 still has a tone, but is tolerable.
Cornfield creations
1/2 ton status
Very nice video, great demo of the various muffler sounds and nice editing.
well i see 1 major problem in your testing for inside noise levels .
no tail pipe.
i just played a little with my flatbed truck and swaped on a new muffler as the old one was rusted out ( saltbelt usa ) and it was a little better but not much.
then for kicks i got a 6ft length of pipe and ran it out the back to the bumper. and
what a diffrence i can 
my self think now. its amazing what just a tail pipe out from under the body will do in inside noise levels . it also made it a lot better outside the truck. as i was able to sneek in to the driveway undetected the otherday driving the same way i always do.
but as others said good video layout and i liked it .
no tail pipe.
i just played a little with my flatbed truck and swaped on a new muffler as the old one was rusted out ( saltbelt usa ) and it was a little better but not much.
then for kicks i got a 6ft length of pipe and ran it out the back to the bumper. and
what a diffrence i can my self think now. its amazing what just a tail pipe out from under the body will do in inside noise levels . it also made it a lot better outside the truck. as i was able to sneek in to the driveway undetected the otherday driving the same way i always do. but as others said good video layout and i liked it .
Cornfield creations
1/2 ton status
Yeah I understand the tailpipe will change, a tailpipe can do two things, increase sound levels, or decrease. The main and only difference I noticed on my blazer is the resonance was directed outward with a tail, vs. under the truck.
The sound clips weren't captured to make a decision on noise levels inside, they were for mere demonstration of the type of sound each muffler makes. I could tell inside the vehicle if the mufflers would fit my needs.
Also if you look closely at the first clip with the tailpipe, when the water comes out after starting it up and revving, the water spirals out of the tailpipe, which is due to the "twister race muffler" I put in the tail to help with noise. I though it was cool looking.
Thanks for the comments, I just hope that I am able to help others from spending money and hating their exhaust, then having to change it over and over again.
The sound clips weren't captured to make a decision on noise levels inside, they were for mere demonstration of the type of sound each muffler makes. I could tell inside the vehicle if the mufflers would fit my needs.
Also if you look closely at the first clip with the tailpipe, when the water comes out after starting it up and revving, the water spirals out of the tailpipe, which is due to the "twister race muffler" I put in the tail to help with noise. I though it was cool looking.
Thanks for the comments, I just hope that I am able to help others from spending money and hating their exhaust, then having to change it over and over again.
ya my coment is basicly dont skip a muffler cause its loud inside before you put a tail pipe on .
you wouldnt think with muffler 1.5ft past the cab on the truck and no tail under flatbed would be that loud inside.
you wouldnt think with muffler 1.5ft past the cab on the truck and no tail under flatbed would be that loud inside.
Thanks for your research and the video. This will help me on my '90 Jimmy that the PO installed a way loud (as far as interior) muffler on. When the stock 350 is at 2K, it will hurt my left ear after 30 miles. This happens to be the RPM that it runs at 65mph.
What a cool thread...Thanks for posting all of this man
