Magnaflow Competition Cat-back system?

[neodark]

How much of the crackling of the exhaust can you hear while driving? I love the crackle of the exhaust, but wasn't sure how audible it is while driving.

You can definitely hear it under deceleration, specially after letting off the gas when WOT.

Sponsored

 

[jtmat]

Any sound clips? I do not have a convertible, but would still love to hear it!

Go to YouTube and search "jt mat magnaflow" and I will come up on the first search.

you can also hear it (and others) in the mufflers stickie at the top of this site... Which I guess you have not went through... Far as I know there was one other guy in that thread who did the same thing I did. He built a cat-back though.

I keep my resonator and also kept my down low torque.

I will create some more videos now that the car has settled in with the new mufflers.

 

[NewSVO]

You can definitely hear it under deceleration, specially after letting off the gas when WOT.

Damn it I want mine to pop and crackle and it does neither, it's a very very clean tone but I want something a bit less "tame" with my chambered set-up I really need to hear yours soon lol

 

[neodark]

I keep my resonator and also kept my down low torque.

Give this a read, great write-up:

N/A cars: As most of you know, the design of turbo exhaust systems runs counter to exhaust design for n/a vehicles. N/A cars utilize exhaust velocity (not backpressure) in the collector to aid in scavenging other cylinders during the blowdown process. It just so happens that to get the appropriate velocity, you have to squeeze down the diameter of the discharge of the collector (aka the exhaust), which also induces backpressure. The backpressure is an undesirable byproduct of the desire to have a certain degree of exhaust velocity. Go too big, and you lose velocity and its associated beneficial scavenging effect. Too small and the backpressure skyrockets, more than offsetting any gain made by scavenging. There is a happy medium here.

For turbo cars, you throw all that out the window. You want the exhaust velocity to be high upstream of the turbine (i.e. in the header). You'll notice that primaries of turbo headers are smaller diameter than those of an n/a car of two-thirds the horsepower. The idea is to get the exhaust velocity up quickly, to get the turbo spooling as early as possible. Here, getting the boost up early is a much more effective way to torque than playing with tuned primary lengths and scavenging. The scavenging effects are small compared to what you'd get if you just got boost sooner instead. You have a turbo; you want boost. Just don't go so small on the header's primary diameter that you choke off the high end.

Downstream of the turbine (aka the turboback exhaust), you want the least backpressure possible. No ifs, ands, or buts. Stick a Hoover on the tailpipe if you can. The general rule of "larger is better" (to the point of diminishing returns) of turboback exhausts is valid. Here, the idea is to minimize the pressure downstream of the turbine in order to make the most effective use of the pressure that is being generated upstream of the turbine. Remember, a turbine operates via a pressure ratio. For a given turbine inlet pressure, you will get the highest pressure ratio across the turbine when you have the lowest possible discharge pressure. This means the turbine is able to do the most amount of work possible (i.e. drive the compressor and make boost) with the available inlet pressure.

Again, less pressure downstream of the turbine is goodness. This approach minimizes the time-to-boost (maximizes boost response) and will improve engine VE throughout the rev range.

Full article here: http://www.tercelreference.com/tercel_info/turbo_exhaust_theory/turbo_exhaust_theory.html

 

[willmkent]

I plan on tuning. So the torque is noticeably lower, does the car seem slower because of it? I plan on tuning it, so I will eventually get back that torque. Performance wise how does the car feel until I can get tune?

still pulls strong. but you bet i could notice. I am also very particular and have a good memory so I remember how something felt before hand. If you are going to tune, don't even worry about it, it literally is worth it by far. the Exhaust sounds fantastic.

Ive been driving with my exhaust no tune for about a month, never bothered my the little loss in torque, the sound makes up for it. Plus, car probably picked up a couple ponies so its not all a loss.

I say go for it man, Im gonna try to get my buddies drone to follow behind me as i take off. Should be a cool vid. if I can get him to hook that up i would love to post it

 

[jtmat]

Give this a read, great write-up:



Full article here: http://www.tercelreference.com/tercel_info/turbo_exhaust_theory/turbo_exhaust_theory.html

At least he called it a theory.

Can't combat every article found on the internet, but I like the way my car drives... resonator and all.

 

[ryant601]

Anyone that has the comps - did you notice a sound change after break in? If so, what did you experience? Just put 'em on...definitely loud haha.

 

[neodark]

I think they mellow out after a few 100 miles in them... THat or I've gotten used to the loudness. Sometimes I don't think it's loud enough, unless I'm above 4-5K.

 

[Qyu]

On the same boat, trying to decide between "Magnaflow competition or Solo performance." Can anyone give a real life comparison to how loud it is? I know everyone said's its loud but everyone has different perspective.

 

[jtmat]

On the same boat, trying to decide between "Magnaflow competition or Solo performance." Can anyone give a real life comparison to how loud it is? I know everyone said's its loud but everyone has different perspective.

http://www.mustang6g.com/forums/showthread.php?t=14511

That is the sound thread... although, they do sound different in person. Not very reliable way to judge, IMO.

Maybe you can go to a car meet in your area? That would be the best option, if availabe... so you can hear in person.

 

[CommyO]

Welp. Thanks to this thread. I am back on the MF Comp train. I don't want to end up changing exhaust and spend even more money if I get MBRP Race...

Don't mean to hijack but can any MBRP Race owners check in? If you can talk briefly about your experience with it, it'd be great.

 

[ryant601]

Guy who installed mine was drooling over mine, said it was the first Ecoboost exhaust he liked.

As it stands, it's loud in the cabin - not sure if it's a combination of the fake sound tube and the cat back or what. On the highway it's no problem until you get on it. It just seems kind of boomy I guess, not sure how to describe it. I will be perfectly fine if it breaks in quieter.

Sponsored