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Discussion Starter · #1 ·
I just got in from the garage after spending about 3 hours under the 3SRT8 installing the new Magnaflow Cat-back system. My advice...take it somewhere to be done, or rent a lift. Of course, I'm old, fat and slow, but this was just too much of a hassle due to the low profile of the car. A helper would have made the job much easier. I gave up doing exhaust systems years ago because it's such a dirty job. While this car's unside is clean, and there's no rusty bolts to contend with, I made the right choice back then.
I backed the car onto my new Rhino ramps, and quickly saw that this would not give me the necessary clearance to remove the front clamps behind the cat pipes. I used my old steel Sears ramps which lift the car approx 12". Getting the old system off was not too bad, the hardest part being separating the front muffler from the cat pipes. The rubber hangers can be a bit of a bear to pop off while under the car, so I removed the brackets associated with the 4 rubbers (2 on each resonator). A little silicone spray helps a lot. The drivers side resonator detaches from the muffler, but the pssenger side does not. The whole assembly is a little bulky and heavy while underneath. I found it easier to remove the small crossmember (4 ~3/8 bolts) and put a rolling floor jack under the suitcase muffler and give the passenger side res a good heave-ho. This detached the whole mess from the car. The new system comes with u-bolt style front clamps...bad. My suggestion to Magnaflow is to include 360* strap style clamps like the others included. The area around where the new front pipe connect to the existing 2 7/8" cat pipes is very tight and hard to get the u-bolt style clamps positioned properly. I'll be replacing them soon.
Adjusting the mess so that the tips look perfect is also a pain, in fact I am going to have to make a slight adjustment to get both sides to match.
The sound isn't too mich louder with the windows closed, and at least you feel there's an engine in the car when you rev it in neutral.
I may just be tired, but I'm not sure if I would make the purchase if I could do it over, but that may be premature. Give me a few days and I'll probably feel different. Except for the aforementioned u-bolt clamps, the system is top-notch and well made.
I'm going to bed.
-Steve :yawn:
 

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Old, Fat, and Slow..I feel that! :)

Give it a few days - I'm sure you'll be telling yourself is was worth it.
 

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Cool ....

Instead of creating another thread .... I just installed my Magnaflow Cat-back today as well ....

We had a lift though, so it was a little easier ... I agree, those clamps that Magnaflow supplies for the cat-pipe to new section sucks .. I think they should have used the same ones as on the rest of the system ... wonder if they had some reason for that ....

I still have to do some tweaking to get the tips perfectly straight (or at least the same)

Overall, doesn't seem much louder then stock, but definitely has a nice low rumble at idle and partial throttle ... sounds very similar to stock when you get on it ... at least, IMO ....

I like the system ... worth the money ....now on to the cats ... (didn't do those today, didn't have time)
 

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SJZ and everyone...

the tips will heat up and cool several times over the next several days...
and they will "dial" in...
so don't try and adjust...
as for the sound...
get it in auto-stick...
even in the 300C "limited"...
you'll hear the difference...
trust me...
 

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Whoa Whoa Whoa

You guys are scaring me. Are you saying that the MF system sounds like the stock system when you open her up? That's why I don't like the stock system. The MF videos sound far from stock.

Please either convince me otherwise or confirm so I can decide what to do with my order. The Zoomers are clearly not stock and from what you're saying might be the only way to make it sound badass.

lil help pls.
 

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I'm just saying, IMO, if you are looking for a system that has a nice rumble to it, without sounding totally obnoxious ... this is the system for you ...

I personally don't think it is much louder than stock when you get on it, but that is only my opinion, and, I've only driven the car 30 miles since I've installed it ....

Plus, when I do the CAT mod, I'm sure it will get a little louder too .....
 

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300cul8r

I am saying that...
"take the stock exhaust...
"Blow" it up under WOT and it is absolutely sweet..."

300cul8r - hold off on the exhaust...
meet me when I am in OC again...
I'll let you drive mine and you can see for yourself...
doesn't get much better than that...
or come to SD this weekend to hear it...
little D&B nascar racing before hand...
 

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I am not an exhaust specialist, but I would assume that the muffers and resonators will break in and the system will get a little louder. I will be dissapointed if it isn't much different than stock. I am also concerned over the tips not lining up. Saying they need to heat and cool a couple times before they settle in sounds good in theory, but having to re-adjust a second time may be a pain in the ass for my mechanic.
 

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Can anyone comment on the total weight of the Magnaflow system compared to what you take off the car? The stock suitcase muffler looks pretty darn heavy...
 

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JohnnyVIG...

ok...
that's it...
I was trying to be nice...
and give a review like you do on the pipes as you did on the Kicker...

the "flows" are absolutely LOUD!!!
and best at WOT under 2nd to 3rd...

the only thing similar to "stock" isthat they both kinda originate from the same decibels and similar sound...
after that...
forget it...
they absolutely ROCK!!!

there...
it is on the table!!!

and enjoy!!!
 

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cbutler

cbutler32 said:
ok...
that's it...
I was trying to be nice...
and give a review like you do on the pipes as you did on the Kicker...

the "flows" are absolutely LOUD!!!
and best at WOT under 2nd to 3rd...

the only thing similar to "stock" isthat they both kinda originate from the same decibels and similar sound...
after that...
forget it...
they absolutely ROCK!!!

there...
it is on the table!!!

and enjoy!!!

touché...................
 

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Does the magnaflow system have the resonators with them,because I don't want any resonators as they suck up HP!!To me it would defeat the purpose of buying a new system if its got them.They'll quiet the system down too much for me also.
 

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Does the magnaflow system have the resonators with them,because I don't want any resonators as they suck up HP!!To me it would defeat the purpose of buying a new system if its got them.They'll quiet the system down too much for me also.
Check out the thread pertaining to the Magnaflow exhaust. Its here:

http://www.300cforums.com/forums/showthread.php?t=9285&highlight=srt8+magnaflow

The rear mufflers on the Magnaflow system are a straight thru design, and they do
not hold back any HP from the engine, so I don't think that would be a problem.

Have you heard the Magnaflow system on an actual car yet? If not, check out
Magnaflows website. They have several sound clips of their system on a Dodge
Magnum with the Hemi. The system sounds NICE! I would think that without them,
it would make the car VERY loud, like the Zoomers.

Jim
 

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Discussion Starter · #14 ·
Stock Exhaust is Re-Installed

Call me a chicken...I don't care!
I drove the car with hte new MagnaFlow (#16642) cat-back system about 50 miles today, and came home with a headache. So, it was back up onto the ramps, ripped out the Magnaflow, and put the stock system back in. I'm happy again, except for the fact that I have a slightly (less than 24 hour) used cat-back system sitting in my garage. PM me if you want to buy it.
-Steve
 

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Wow. That's a curious turn of events. Your initial post suggested it wasn't much louder. Enough so that some people were concerned it wasn't going to sound mean enough. Interesting commentary after 50 miles.
 

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guys and gals...

to each his own...
the exhaust system - is louder than most...
but has no resonance, or reverb...
so that is why I went with it...
there is nothing better than stomping the throttle WOT!!!
and the "flows" just sing their tune...
sorry to hear that you didn't care for them sjz...
put em up for sale on the sale section thread...
Your car is still HOT!!!
 

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sjz said:
Call me a chicken...I don't care!
I drove the car with hte new MagnaFlow (#16642) cat-back system about 50 miles today, and came home with a headache. So, it was back up onto the ramps, ripped out the Magnaflow, and put the stock system back in. I'm happy again, except for the fact that I have a slightly (less than 24 hour) used cat-back system sitting in my garage. PM me if you want to buy it.
-Steve
Hmmmm. This post makes me feel better about my MF order. Irony can be so ironic.
 

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need4speed said:
We had a lift though, so it was a little easier ... I agree, those clamps that Magnaflow supplies for the cat-pipe to new section sucks .. I think they should have used the same ones as on the rest of the system ... wonder if they had some reason for that ....
HMMMM .. that should nto be the case .. I will look into the clamp issue. They shoudl be 2.75" band style clamps as per my design ... I might have to check on why that was not he case in your guys parts.

Illl get back to you all after the holiday.

Richard
 

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Johnny G said:
Does the magnaflow system have the resonators with them,because I don't want any resonators as they suck up HP!!To me it would defeat the purpose of buying a new system if its got them.They'll quiet the system down too much for me also.
Resonators are used for pressure wave tuning.

In Magnaflow's case it also acts as a substitute X-pipe: improving torque.

The dimensions of the resonator are calculated so that the waves reflected by the resonator help cancel out certain frequencies of sound in the exhaust. A well designed resonator can keep the power.
 

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goddardzilla said:
Resonators are used for pressure wave tuning.

In Magnaflow's case it also acts as a substitute X-pipe: improving torque.

The dimensions of the resonator are calculated so that the waves reflected by the resonator help cancel out certain frequencies of sound in the exhaust. A well designed resonator can keep the power.
Thanks zilla for the info,I was always under the assumption like the old days of headers,good flow thru muffs.and straight out. You can see I haven't had a new car for a long time. :silly:
 
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