2007 5.4L Bone Stock. I have a quote for a SI/DO anodized non-mandrel Flowmaster 50 with tips installed for 388.00. Is that a good quote? I'm looking for a nice throaty idle. Minimal interior volume, (nice sound system that I don't want to have to compete with.) more Horsepower and Better Gas Mileage. I definately don't want obnoxious. I was thinking I wanted the Magnaflow cause they sound nice, but the shop only sells flowmaster. Some of the exhaust clips I hear have a little backfiring on decelleration, I don't like that. Any opinions?

 

You can buy a muffler and take it to a shop to have it installed. They might charge you $20 more but I would rather supply parts than buy whatever is on their shelves. Economy would increase better with the Magnaflow muffler, but your overall deal is pretty decent. 50 Series sounds real good, and keeps the interior noise at a minimum. Sucks that its non mandrel though, but its not crushed/crimped bent right? If not, then I say go for it.

 

I had a local shop install a Flowmaster 50 series dual chamber on my '07. They simply found a muffler that had the same diameter inlet and outlet. Cut out the the factory muffler and welded in the Flowmaster. The 50 series was not too loud and yes you could hear it when you wanted to. They also welded on a stainless steel tip. I don't remember the exact price, but I am thinking it was around $250.00. The stainless steel tips are not cheap.

 

What kinda bends are there other then mandrel and crushed/crimped?

 

I run the magna flow on my truck and i agree with you on not wanting anything obnoxious. The magnaflow is smooth sounding and does not back fire, it sounds great after it breaks in and when the engine is under load, my only complaint is that maybe its a little too quiet. I do like hearing that grunt every now and then

 

Smooth bent, which is like mandrel bent, only it might be thinner in the bends, but not anything bad like crimped bent.

 

oooh okay thanks. i just got a super 44 delivered two days ago 9430452, and two 4x18 inch tips. What kind of stuff should i ask/look for when having everything installed??

 

Good choice of muffler! Ask if they can make all bends mandrel, if not, then atleast smooth. Dont settle for crimped. If they dont charge awhole lot more maybe try going for stainless steel piping all around.

 

is your super 44 si/do ? and model truck you got? i am wanting to order one for my 2004 screw. i have stock front two cats and thats all.. dumped exhaust where muffler used to b.. has lots of drone in cab and wife doesnt like it..im going to exit mine in front of rear wheel... was wondering if that part # fit my truck .. thanx

 

cant go wrong with a set of super 44's!!!!!! i love mine!! i have a hi flo cat with dual super 44's dumped under the cab. it is kinda lud in the cab, but i dont mind

 

Thats a little pricey for SI/DO. My friend has a 2007 f150 and he got it installed with tips and muffler it was only 275.00. i got true duals on mine and it was around 375 for 2 mufflers and 2 tips. Maybe this will help you. and the mufflers were also flowmaster.

 

I have the Flowmaster 50 series, but mine is dumped. its true when they say the cab noise is a lot less, but when you wanna run it and hear it you can hear it. I would also add that its smart to go with the stainless steel even though it is more expensive it wont rust out and the tips stay shinin

 

yeah i was gunna say somethin about the price but since mine is dumped i was not sure, but my roommate has Flowmaster 40 si/do with stainless steel tips he bought it from the shop he had it installed at and paid like $325, but stuff is cheap in oklahoma so who knows

 

I just got the 40 series SI/DO exiting straight out the back. I LOVE IT!!! It's got the nice deep tone without a lot of interior resonance. At speeds of 45-80 you would not even know it has aftermarket exhaust.

 

I ordered the SI/DO 44 off performancepeddler. Its the 9430452. and I ordered two 4x18" tips from performance-curve. My trucks a 05 screw 5.4. I talked to a shop today and they had an opening in about two weeks. I guess they must be okay since they are so busy. Oh another thing is that they dont use stainless steel tubing, but hell I am so anxious to get it installed!