ok so i just got the super44 SIDO installed today. i drove it around town for a bit and then i made a trip to monterey (1.5 hours) on the highway.

flowmaster decided to incorporate its "delta flow" technology on this new muffler, which is basically saying they tried to reduce interior resonance. people have complained about droning sounds from the flowmasters. around town, the super44 definitly has a little drone from about 1800rpm to 2300rpm on my 5.4 but to me it didnt seem that bad. on the highway, i was very impressed with it. with windows up at around 70mph i could barely notice it. accelerating to about 80 made it a little bit more noticeable, but not too bad at all. when the engine stresses on uphills though you can really hear it.

outside the truck, the "flowmaster tone" is very noticeable and quite loud, people will definitly hear you (flowmaster claims this is their most aggresive muffler ever). it sounds great, and i love it. stomping the gas and hitting higher in the rpm range sounds especially nice.

as far as low end torque loss, i didnt notice any. in fact, i noticed a small increase in power, but this may also be because i installed a K&N filtercharger intake last night...

unfortunately im not at home, im in monterey for the night but i will post pictures tomorrow and try to get a soundclip up sometime soon too.

for anyone considering this muffler, i say go for it i love it.

 

Nice write-up.

Thanks.

 

thanks

 

Congrats. I have had the delta flow 40 on for almost 2 years and I still love it. I get compliments on it all of the time. Good choice.

 

I wnt with a super 50 delta SISO, sounds great

 

thanks. does it change in sound at all over time as it ages or does it "break in" at all and sound different??

 

I don't notice any difference at all. It sounds great and performs very well.

 

thats good, i love it more and more everytime i drive it. my edge just got here today im going to go put it in soon. once its in my big 3 power upgrades will be complete.

 

every flowmaster i've ever had on my mustangs got a bit louder after a couple months. not sure why. could be my imagination.

 

i had flowmasters on my 2000 f150 scab. it sounded awesome. got magnaflow on now but it isnt as loud, but no drone at all. its a trade off i guess, but i miss the flowmaster sound.....

 

Waiting on the muffler shop. Was suppose to have in yesterday, but the shipment was delayed. Hopefully I'll have the Super44 (SIDO) installed today..

Thanks for sharing some info with us!

 

you bet you're gonna love it.

 

When choosing the Flow 44 what should I go with? 2 1/2" in and 3" out?

 

if your going with a SIDO, go with 3" in and dual 2.5" outs.

 

How much quieter are the 50deltas than the 40 deltas, I am trying to decide witch ones i want.