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  #1  
Old 11-13-2009
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FLOWMASTER 40

So today in school my friend randomly gave me a muffler, flowmaster 40(for free). how do u think that would sound on my 2008 4.0. Im not that inteligent about trucks and all so im not too sure.
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  #2  
Old 11-13-2009
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It will be pretty loud. It depends on which flowmaster 40 it is. If its the original 40 its going to be very loud. It should sound pretty good though.
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  #3  
Old 11-13-2009
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loud but will sound great ... get r dun
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  #4  
Old 11-13-2009
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Another one sucked into the Flowmaster evil...have fun with that. Drone and no HP gain are your friends huh?
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  #5  
Old 11-13-2009
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putting a flow master 40 on my truck was a waist but i have a 2.3l it sounds ok at certain rpms but most of the time it sounds like the stock muffler idk if its the fact all i could find was a 3 inch and had to reduce it back down to stock size should sound better on a 4.0 when i get some money ima redo my exhust again
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  #6  
Old 11-13-2009
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Quote:
Originally Posted by silverfox View Post
putting a flow master 40 on my truck was a waist but i have a 2.3l it sounds ok at certain rpms but most of the time it sounds like the stock muffler idk if its the fact all i could find was a 3 inch and had to reduce it back down to stock size should sound better on a 4.0 when i get some money ima redo my exhust again
i like it on mine

YouTube - flowmaster 40 on 2.5" piping 2.5l lima 4cyl outside revving

if i were to do it again id get a glasspack straight thru though
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  #7  
Old 11-13-2009
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Quote:
Originally Posted by Melt View Post
i like it on mine

YouTube - flowmaster 40 on 2.5" piping 2.5l lima 4cyl outside revving

if i were to do it again id get a glasspack straight thru though
Good idea...I never understood why anyone would think that stopping, turning, rerouting, resisting, etc exhaust gasses like Flows do would be a good thing.
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  #8  
Old 11-13-2009
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To each his own. I've heard various different exhaust setups on the 4.0 and Flowmaster sounds the best to me. It's up to each person to decide what sounds best to them.
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  #9  
Old 11-13-2009
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This is what happens when you have Flowmasters haha...I kid.

MVI_0808.flv video by Nippon69 - Photobucket

Me with bullet style/straight thru vs 78 Camaro mods with Flows...just rolling on the throttle.

Do whatever you want man, can't please everyone.
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  #10  
Old 11-14-2009
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on rangers the difference for horsepower between a straight through and a chamber muffler is negligible. even when talking about 450 hp motors. its +- 10 hp, which you will never feel in the butt dyno. and when you get to that amount of horsepower its more or less 2.5" exhaust or 3" exhaust that makes up more power

on a ranger, get what sounds best to you.
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  #11  
Old 11-14-2009
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Quote:
Originally Posted by DillonT View Post
on rangers the difference for horsepower between a straight through and a chamber muffler is negligible. even when talking about 450 hp motors. its +- 10 hp, which you will never feel in the butt dyno. and when you get to that amount of horsepower its more or less 2.5" exhaust or 3" exhaust that makes up more power

on a ranger, get what sounds best to you.
You are wrong, there is a big, big difference when changing from a chamber style to a thru style on a FI mod motor car or LSx car. I have seen lost HP on a few cars and the rest saw no gains. Even with their 'American Thunder' kit, no gains. Tubing style does play a big part as well though.
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  #12  
Old 11-16-2009
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dont really feel like arguing, but either way. on a ranger. just pick what muffler system/style which sounds the best for you.

this is on a pushrod 302 motor, and not a v6 ranger, but you can see what im talking about
MUFFLER SHOOTOUT:

Results based on 5.0 Mustang Magazine December 2002 issue (page 55). Test car is a ’90 Coupe with 370 HP and 11 second potential. A number of 66 pulls were made to compile this information.

The results in HP order:

1.Flowtech Warlock (open) 374.2 hp/ 333.1 tq
2.Bassani Real Street 373.7 hp/ 333.8 tq
3.Hooker Maxflow 373.5 hp/ 333 tq
4.Borla XS 373.3 hp/ 332.6 tq
5.Magnaflow 372.8 / 332.5 tq
6.MAC 372.3 hp / 331.5 tq
7.Flowtech Afterburner 372.3 hp/ 330.1 tq
8.Hooker Aerochamber 372.1 hp/ 330.4 tq
9.Bassani 372 hp/ 333.5 tq
10.Spintech 371.6 hp/ 332.2 tq
11.Edelbrock Performer RPM 370.9 hp / 331.3 tq
12.Borla XR1 370 hp/ 334 tq
13.Flowtech Terminator 369.5 hp / 331.3 tq
14.Dynomax Ultra Flo 369.4 / 333.2 tq
15.Flowmaster 369.4 hp / 331.8 tq
16.Flowtech Warlock 366.3 hp / 325.3 tq
17.No muffs 365.2 hp / 330.1 tq

Sound Off in Quietest to Loudest (Decibels):

1.Borla XS, 80db at idle, 90db at 2,000 rpm, 110db at WOT.
2.Hooker Maxflow, 80db at idle, 90db at 2,000 rpm, 120db at WOT.
3.Magnaflow, 82db at idle, 91 at 2,000 rpm, 114db at WOT.
4.Flowmaster, 82db at idle, 93 at 2,000 rpm, 115db at WOT.
5.Flowtech Warlock, 83db at idle, 92 at 2,000 rpm, 112db at WOT.
6.Dynomax UltraFlo, 83db at idle, 94 at 2,000 rpm, 113db at WOT.
7.Borla XR1, 83db at idle, 96db at 2,000 rpm, 118db at WOT.
8.Bassani Street, 83db at idle, 96db at 2,000 rpm, 120db at WOT.
9.Edelbrock RPM, 84db at idle, 93db at 2,000 rpm, 118db at WOT.
10.Bassani Real Street, 84db at idle, 96db at 2,000 rpm, MAX. (120+db).
11.Flowtech Afterburner, 86db at idle, 94db at 2,000 rpm, 115db at WOT.
12.Flowtech Terminator, 86db at idle, 94db at 2,000 rpm, 119db at WOT.
13.Hooker Aerochamber, 87db at idle, 94db at 2,000 rpm, 114db at WOT.
14.SpinTech, 87db at idle, 97db at 2,000 rpm, 116db at WOT.
15.MAC, 87db at idle, 98db at 2,000 rpm, 119db at WOT.
16.No Muffler, 91db at idle, 103db at 2,000 rpm, MAX. (120+db).
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  #13  
Old 11-16-2009
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Notice where Flowmaster falls on the list. We dynoed a GT similar
to mine with before and after pulls. Lost 1 whp going to Flowmaster from the STOCK muffler. Almost exact conditions on both sets of pulls. We have seen bigger differences in losses on LSx cars.

Your right though on a Ranger it doesn't matter. If you like the sound of em
go for it. I personally hate the sound, but that's just me.
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  #14  
Old 11-16-2009
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Everyone knows you buy flowmasters for the sound, not the performance.
However ive never heard of a car losing HP going from stock to a flowmaster. But like the one guy said you will not notice the difference from a straight threw to a chamber style unless you have a high HP car.
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  #15  
Old 11-16-2009
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It'll be pretty loud, but IMO, it's the best sounding muffler for a 4.0 Ranger... had one on my 97 for about 3 years now...
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  #16  
Old 11-16-2009
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I had a 40 series on my 3.0 and it sounded wonderful. I get a kick out of these younguns around here that think running straight pipes gives them power. lack of back pressure equals loss of power. I had a magnaflow on my 5.3 Envoy, sounded good, but then again it was a V8. 70 series is deep/throaty and sounds good.
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  #17  
Old 11-16-2009
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I cut my exhaust right after the cat and have 2.5" ran from there into the original 40 series and then 2.5" coming out ran out to the stock location but at an angle just like the gibson extreme duals but with only one pipe if that makes sense with a 3.5" slash cut stainless tip. It looks great and sounds amazing I get compliments on it all the time. It sounds very deep and ya there might be a tiny bit of drone around 2500 rpms in first through third gear but in 4th and 5th going down the road I can barely even hear it. I noticed a little better throttle response but thats about it. The bottom line is it's a freaking ford ranger not a drag car so get what sounds best not what makes 1/2 a horse more. I tried the whole Magnaflow thing and about every other muffler there is out there and nobody sounds like the flowmaster original 40 series. I brought in a sheet I printed up showing that I could get the muffler for like $55 shipped on ebay and my local muffler shop matched that price so something else to think about.
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  #18  
Old 11-16-2009
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i have a flow 40, i like it.
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  #19  
Old 11-16-2009
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I liked mine on my Ranger. It did drone way to much though and was loud. I like the MBRP I have now so much better.
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  #20  
Old 11-16-2009
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For what its worth, i've got an Original 40 on my Bronco and love the sound. I went from an 18 inch glasspack, and it was a great improvement. Just about the same volume, but deeper and a bit less drone.
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  #21  
Old 11-28-2009
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Is it on the truck yet?
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  #22  
Old 11-28-2009
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no, im gonna wait till spring,my dad wants me to hold off for a little while.
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  #23  
Old 12-20-2012
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I've had a flowmaster 40 american thunder on a pervious vehicle......just loud and annoying at cruising speed. They are nice on older mucle cars to give them that traditional sound, but just annoying when driving.

I love Spintech because they keep a moderate tone, but sound stock overall......Numbers are still fairly good in the end. Their construction is definitely better and more rugged than Flowmaster. Flowmaster has very thin shells in comparison and their welds are thin as well. My old Spintech on my other vehicle was able to take a few dents and dings without cracking or splitting.....unlike my brother in law's flowmaster on his bronco. That thing pealed open like a sardine can when it hit a tree limb.
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  #24  
Old 12-22-2012
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I just got a Thrush welded muffler (generic Flowmaster 40 series) I'm going to be putting on my Ranger here soon. I'm looking for a little more tone out of my truck. I know it won't make monster HP. It's just a daily driver. I have one on my 91 Chevy, and it sounds good...

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  #25  
Old 12-22-2012
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I've got the FM40 and dual 2.5" pipes...
Sounds nice. I get compliments almost every day on it. I also had some mechanic guy come up to me and ask if I swapped a V8 into the truck
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