Swift Silent?
I want to replace the stock muffler, no catback, with an aftermarket exhaust. I do not want something that is going to resonate my ears off. I have always used a two chamber Flowmaster and those are just too loud. I simply want to improve performance without too much added internal noise/resonance I once loved as a young pup. Quiet on the inside of the cab! What about Flowmaster's 50 Series SUV or Big Block or 70 Series Big Block?
Thanks!
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I'm a fan of the 70 series BB, quiet under normal driving conditions, will get noticed when you get on it, and with just replacing the muffler won't bother you at all.
Check them out on one of our exhaust pages here:
http://motorhaven.autoanything.com/exhausts-mufflers/65A2518A0A0.aspx?kc=MOTORH
Don't forget about our $20 off orders over $199 promo that we have created for the FTE forum. Putting the coupon code, FTEDEAL, into the cart at checkout will give you the discount.
This is some info I got earlier... what are you thoughts on this? What would a commensurate Magnaflow muffler be for the Flowmaster 70? I will not be doing a catback, muffler only. The truck I have is a lease and am not going to dump alot of bling into it. I am sure the cost of catback is WAY more than doing a muffler swap and adding dual tips. Is Magnaflow being pushed because they are a sponsor on this site, or is this fact/legit? Cuz truth be known, nothing sounds like a Flowmaster.
"Regarding your proposed exhaust change, I suggest steering clear of Flowmaster, as they generally cause an actual loss of lower rpm torque while not gaining a significant amount of power even at full-throttle at higher rpms. Those baffles & chambers generally are impediments to airflow, causing a loss of airflow velocity and thus a loss of torque, especially on part-throttle - they are there in an effort to reduce droning & resonance - which, as you noted, has not been very successful. I also recommend, if your budget will permit it (and if it can't then just wait until you can), doing a complete cat-back exhaust system rather than just a muffler-only change. Otherwise you are still stuck with the nominal 2.5" (OD) stock factory exhaust tubing, and that will restrict your gains - in other words, a muffler-only change from stock is generally done for sound, not for power gain.
Magnaflow is the only exhaust manufacturer that we have seen actually increase available HP & torque all the time, at any throttle position and at any rpm - it's a matter of proper airflow engineering, something that almost nobody else does in the aftermarket cat-back exhaust industry - most manufacturers only do fitment & sound, without worrying about ever even doing the first part-throttle testing of any kind - and let's face it, you need power not only at full-throttle, but most importantly, you also need to increase part-throttle torque, especially in a heavy truck.
See, we actually test the parts we sell, and will not sell parts that we will not use on our vehicles - that is something that virtually no vendor does these days, because it cost money and takes a lot of time - but our reputation is built on making these trucks run better for a given level of modification than other similar vendors, and we are well known for accomplishing this for many years in the Ford F-series platform vehicles like yours."
Magnaflow is the only exhaust manufacturer that we have seen actually increase available HP & torque all the time, at any throttle position and at any rpm - it's a matter of proper airflow engineering, something that almost nobody else does in the aftermarket cat-back exhaust industry - most manufacturers only do fitment & sound, without worrying about ever even doing the first part-throttle testing of any kind - and let's face it, you need power not only at full-throttle, but most importantly, you also need to increase part-throttle torque, especially in a heavy truck."
Flowmaster has the sound that myself and other guys here as well as many I know prefer. The Flowmaster 50 is actually a better fit come to think of it for your F150. the 70 is better for hauling, trailers, etc. So the Flowmaster 50 series would be the one, it's smaller which actually helps out more with superior exhaust scavenging. You'll get great tone, improved torque, and mellow interior drone resonance.
Some more customer comments are here for the Flowmaster 50 muffler:
http://motorhaven.autoanything.com/exhausts-mufflers/65A2514A0A0.aspx?kc=MOTORH
Check them out on one of our exhaust pages here:
http://motorhaven.autoanything.com/exhausts-mufflers/65A2518A0A0.aspx?kc=MOTORH
Don't forget about our $20 off orders over $199 promo that we have created for the FTE forum. Putting the coupon code, FTEDEAL, into the cart at checkout will give you the discount.


