New Flowmaster Muffler came in today
Though I've never had a flowmaster catback on my personal car I have heard a few. I have had previous cars with 40 series mufflers, my wife's SUV has a 40 series Deltaflow, and I have run a 4 inch in/out single chamber on my current set-up. All sounded "better" then my current Magnaflow catback. But, I got it for being quiet, not for sound. So, I will have to politely disagree with your opinion.
I better hide under a rock, I own two 80 series.
...lol, in my defense the PO said the Z28 had an aerochamber catback before i bought it. i found out the hard way when i had to repipe everything because they reused the factory catback.
The 6 spd and the flowmaster does impress my little brother, who is in highschool. I guess things could be worse.
...lol, in my defense the PO said the Z28 had an aerochamber catback before i bought it. i found out the hard way when i had to repipe everything because they reused the factory catback.
The 6 spd and the flowmaster does impress my little brother, who is in highschool. I guess things could be worse.
should have bought an old one.. they are quiet as hell when new.. they dont have any throat to them thill they get a whole lot of mileage on them... even then, theyre not all that great.. I just took off my FMM... replaced with a single dumped Dynomax bullet...
TECH Enthusiast
Joined: Jun 2010
Posts: 611
Likes: 0
From: Illinois
i run a 40 series with the pacesetter LT's, and 3 inch tubing all the way back. i will be installing my cutout this weekend and then hopefully going to the track. I'll run 3 times with it closed and 3 times with it open and run an average. who cares about dyno numbers it's all about how it performs at the track, otherwise flowmasters have one of the best sounds out there....IMO. don't listen to other people's opinions, it's your car and if you like how it sounds who cares. otherwise get a cutout and when u really need to shut ppl up run the exhaust open.
If you have a 80 on a LT car with no cats and a cam, its not that bad sounding, actually pretty loud. Anything other than that I dont think it sounds good at all, but thats my opinion. I've cut a flowmaster 80 off at least 10 ls1 f bodies i've had and still have em piled up in the attic. I did cut one off a bolt on SS I had, put a stock one back on it and gain 3hp, same day. 3hp aint ****
t rex LT car with fromaster 80
http://www.youtube.com/watch?v=k2e1SQRNpH0
t rex LT car with fromaster 80
http://www.youtube.com/watch?v=k2e1SQRNpH0
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
80 series sounds a lot like the single chamber I used to have.
http://www.youtube.com/watch?v=DNmnWZiXXfo
http://www.youtube.com/watch?v=DNmnWZiXXfo
For the average Joe the 80 series isn't a bad choice. I have one on my car and it sounds better than stock. If I was into racing and building horsepower I probably would steer away from the 80, but on a normal DD there's nothing wrong with it.
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if you dont have any concrete info then you are just spreading a rumor. again, im not saying it's all false, i just havn't seen any substantial data on it. so at this point i still believe it's just n00bs repeating rumors that everyone else has spread.
and if you want to diss on something being the chokemaster hate on those damn stock manifolds ewwwwwwwwwww!
edit: i do have a flowmaster 80 but i am getting a cutout when i make my custom y so problem solved anyway.
@@@@@@@@@ another thing i have never read that some people need to hear is this:
the stock exhaust (at least in my 02 SS) necked down from 2.75 inches to 2.5 inches right before the inlet on the flowmaster. i would bet money that a lot of the issues relating to the flowmaster have to do with people going with the 2.5 inch inlet flowmaster and keeping the bottleneck in place. i ordered the 3 inch inlet flowmaster and had the exhaust shop cut off the neck down section of my i pipe right before it enters the muffler adding a 3 inch piece in its place.
i dont know if the 1/4 inch of of bottlenecking from 2.75 to 2.5 inches hurts that much, but it can't help.
and if you want to diss on something being the chokemaster hate on those damn stock manifolds ewwwwwwwwwww!
edit: i do have a flowmaster 80 but i am getting a cutout when i make my custom y so problem solved anyway.
@@@@@@@@@ another thing i have never read that some people need to hear is this:
the stock exhaust (at least in my 02 SS) necked down from 2.75 inches to 2.5 inches right before the inlet on the flowmaster. i would bet money that a lot of the issues relating to the flowmaster have to do with people going with the 2.5 inch inlet flowmaster and keeping the bottleneck in place. i ordered the 3 inch inlet flowmaster and had the exhaust shop cut off the neck down section of my i pipe right before it enters the muffler adding a 3 inch piece in its place.
i dont know if the 1/4 inch of of bottlenecking from 2.75 to 2.5 inches hurts that much, but it can't help.
https://ls1tech.com/forums/dynamomet...hp-cutout.html
This one has at least some data:
https://ls1tech.com/forums/dynamomet...they-suck.html
And some more info about the different types of Flowmaster mufflers:
https://ls1tech.com/forums/dynamomet...ink-again.html
But as has already been stated, Flowmaster makes many different kinds of mufflers...the ones people are complaining about being Chokemasters are the cross-flow 80 series mufflers used as the replacement for the stock f-body muffler in their cat-back system.
This one has at least some data:
https://ls1tech.com/forums/dynamomet...they-suck.html
And some more info about the different types of Flowmaster mufflers:
https://ls1tech.com/forums/dynamomet...ink-again.html
But as has already been stated, Flowmaster makes many different kinds of mufflers...the ones people are complaining about being Chokemasters are the cross-flow 80 series mufflers used as the replacement for the stock f-body muffler in their cat-back system.
Staging Lane
Joined: Mar 2011
Posts: 81
Likes: 0
From: Perkins, OK
https://ls1tech.com/forums/dynamomet...hp-cutout.html
This one has at least some data:
https://ls1tech.com/forums/dynamomet...they-suck.html
And some more info about the different types of Flowmaster mufflers:
https://ls1tech.com/forums/dynamomet...ink-again.html
But as has already been stated, Flowmaster makes many different kinds of mufflers...the ones people are complaining about being Chokemasters are the cross-flow 80 series mufflers used as the replacement for the stock f-body muffler in their cat-back system.
This one has at least some data:
https://ls1tech.com/forums/dynamomet...they-suck.html
And some more info about the different types of Flowmaster mufflers:
https://ls1tech.com/forums/dynamomet...ink-again.html
But as has already been stated, Flowmaster makes many different kinds of mufflers...the ones people are complaining about being Chokemasters are the cross-flow 80 series mufflers used as the replacement for the stock f-body muffler in their cat-back system.
Joined: Nov 2003
Posts: 6,216
Likes: 236
From: Wichita KS / Rancho San Diego
Let's all remember - the OP is replacing his stock muffler with an FM 80. Presumably he's on manifolds/cats. Is he going to experience some huge hp loss?? Geez ...
As for the dyno results, I watched my buddy with dual cutouts run open and then closed at the track with an FM 80 catback. NO DIFFERENCE.
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
A buddy of mine has a flowmaster 80? on his T/A and it actually sounds pretty good but i think it's been on there a while. I have a magnaflow on mine and, before I put the LT's on, I thought his sounded better.
.