Can someone who has done the "Stock S Exhaust Mod" post a sound byte?...This is the Mod where you by-pass the resonator box on the stock system and attach right into the muffler. I remember reading about someone doing this some time ago and am looking for some more info. ...sound...performance...etc.

This info is not for me, but I admit, I am curious what kind of data, i.e. performance, sound, etc, can be had for a few bucks at the local muffler shop. :smile: I am more than satisfied with my Magnaflow


His, Chile RED over, Madness intake, Magnaflow, Helix Pulley & RDR Swaybar
Hers, Electric Blue / Union Jack on top and BONE Stock

 

I would not do anything to your exhaust, I have seen in european magazine "tuning garage" a test comparision between magnaflow, supersprint and stock, after testing on a mustang dyno same conditions on the 3 exhausts they came with shocking results, only 1 hp gain on 6450rpm on the magnaflow, 1.5 on the supersprint at almoust same rpm, and they lost torque on low rpm, the magazine say after testing that bmw engineers made a very nice work tuning the original exhaust, remember that thay are as 600 usd for any, and spending that kind of $$$ for that peak on horsepower and torque.

Keep your original as it is, for looks change it.

That is my thinking

Ricardo :smile:

 

Hey All!

I'm back, for now. :smile:

TWOMinis:

This is what I was describing in my email:

 

Welcome back Mjolnir, :smile:

So where did you get these photos and does the source have info on the sound, performance, etc? I think you should just go for it....Anyone out here want to donate your "gathering dust" stock S exhaust for research? Contack Mjolnir.

Someone out here must know something.... and it sounds GREAT.

 

call Helix, Eric makes them.

BTW, they were having problems with the stock ecu on their car and they have an update on europeancarweb.com stating they will test again. I have heard that the SuperSprint doesn't add jack from multiple people. I would be very surprised if the Magnaflow numbers dont go up given a second chance.

 

Most HP claims on this site are bull...I think I saw someone say that new wires gave them 10HP...yeah right...

 

Exhaust mod on an otherwise stock car will not give you much, correct.
However, if you are "chipped" & "pullied" then the exhaust shows it's stuff.
Intake is important as well.
This is like a "soup" and just tossing in "excellent carrots" does not cut it.
You need the other good stuff too.

 

>>Welcome back Mjolnir, :smile:
>>
>>So where did you get these photos and does the source have info on the sound, performance, etc? I think you should just go for it....Anyone out here want to donate your "gathering dust" stock S exhaust for research? Contack Mjolnir.
>>

Hey R,

I got those here and here's the thread:

https://www.northamericanmotoring.co...c=12949&51

-Jim

 

>>Welcome back Mjolnir, :smile:
>>
>>So where did you get these photos and does the source have info on the sound, performance, etc? I think you should just go for it....Anyone out here want to donate your "gathering dust" stock S exhaust for research? Contack Mjolnir.
>>

R,

Here is the thread:

https://www.northamericanmotoring.co...c=12949&51

 

I'll be at the track this weekend and will be taking some incar footage of me driving. There should be plenty of clips of my modded exhaust. I'll also do an inside and out comparison of stock, modded, and magnaflowed exhausts so everyone gets a good idea. There are going to be 10 MCSs there and I know of at least two who have the Magnaflow. Check back Mon/Tues.

Amit

 

Eric from Helix13 has the "one-ball" on his car and it sounds great to me. A little quieter and more subdued that the Magnaflow on my car, all with less weight and way less cost. My Magnaflow returned gains more in line with the European Car article than with Randy's seemingly-unreproducable claims. FWIW, here is a diagram of the exhaust with resonator removed:



... and here's the dyno of my Magnaflow:

 

So is Helix doing this exhaust mod?

 

I think that Helix charges $350 for the "one ball" installed. They had a couple on the shelf last time I was there.

 

"One Ball"...

 

>>"One Ball"...

I just did it, LOVE it. Guys/Goils, this is how I believe the car was SUPPOSED to have sounded.

I'll try to get a sound byte soon.

-Jim

 

Has anybody gone to a good muffler shop and had a cat back built.I went to one and talked to them about the 1 ball, which he said he could do for about $60.He also said that he could do a cat with 2.5 inch pipe ( stainless) and a good high flow muffler (flow master) for not to much $300. I have read that people think the prefabs are a rip, which I agree. This may be the mid point in what everybody wants. Anybody have any thoughts???? Also I read about water puddles and MINI'sand water getting into the intakes.I live in the NW where it rains a lot . Would I be wise to put on a aftermarket intake, or I'm I looking for trouble???

 

I to believe that all these CAT back systems are priced way to high. That being said
and being a DIY kind guy I am interested in doing this mod to mine is a sound bite out there ??
Mjolnir can you sort of describe the sound, is there any point where in reverberates in the cabin. Do you feel any difference in power ?

 

>>I to believe that all these CAT back systems are priced way to high.

We don't make exhaust where I work but as someone who works with Stainless Steel a LOT I can tell you that it isn't cheap. Especially in the thickness that they're using for an exhaust system.

I'd bet most of the cost of the product is material.

-Jim

 

>>>>I to believe that all these CAT back systems are priced way to high.
>>
>>We don't make exhaust where I work but as someone who works with Stainless Steel a LOT I can tell you that it isn't cheap. Especially in the thickness that they're using for an exhaust system.
>>
>>I'd bet most of the cost of the product is material.
>>
>>-Jim



Mjolnir (Jim), can you sort of describe the sound, is there any point where in reverberates in the cabin. Do you feel any difference in power ? I have a complete MCS exhaust from the CAT back a friend gave me he is running a Magnaflow and it was just tying up space in his garage so if this Mod. isn't to loud or intrusive I'm going for it. please reply, norm

 

It sounds much like the stock exhaust, but just a little bit louder. It is less throaty and sporty than the Borla Street, but more than stock. It's pretty subtile.

 

It sounds much like the stock exhaust, but just a little bit louder. It is less throaty and sporty than the Borla Street, but more than stock. It's pretty subtile.

 

It sounds much like the stock exhaust, but just a little bit louder. It is less throaty and sporty than the Borla Street, but more than stock. It's pretty subtile.

 

>>Mjolnir (Jim), can you sort of describe the sound, is there any point where in reverberates in the cabin. Do you feel any difference in power ? I have a complete MCS exhaust from the CAT back a friend gave me he is running a Magnaflow and it was just tying up space in his garage so if this Mod. isn't to loud or intrusive I'm going for it. please reply, norm
>>

I'd say if you have two complete sets then you have NOTHING to lose!

Magnaflow was cool but too loud for my family. I drive it every day and it was just too much.

The "one ball" mod is awesome IMO. More power? That's a hard one but nothing >I< can tell.

Sound: Wow, it's hard to explain. That resonator acts kindof like your hand over your mouth. Just muffles it a bit. Actually, I think the car is a bit quieter now at high speeds than with the 2 ball system. (shrug)

I'll try to get a comparison (audio) soon.

-Jim

 

Let's keep this thread going, anyone else done this Mod or thinking about it.

 

As what others have said in this thread, pretty much all cat-back systems available for the Mini cars are seriously over priced. But then you are also paying for R&D and materials (since as someone else mentioned, stainless is not cheap).

However, in the defense of all of the cat back manufactures out there for the Mini, there is some thought that has to go into the design of an exhaust system. Things like droning, HP and TQ can all be affected depending on what diameter pipe you use, what type of muffler you use, what type of resonator or cat you use, and then the relative placement of these components.

Now that being said, of all of the MCS exhaust systems I have seen, they all pretty much have the same type of gains (7-9 HP or so). You really only take advantage of an exhaust sytem like this unless you free up the entire intake and exhaust system. That means better intake, bored out throttle body, better flowing headers, high flow cat and then a high flow exhaust. This is what I did on my M3 and it worked out very well and should work even better for a car with forced induction, ala MCS.

I think the biggest immediate advantage you have with an aftermarket cat back system is weight savings. Mini needs to have a design for the masses, not just the enthusiast minority here on MCO. That means a quiet exhaust = heavy and not as free flowing. Personally, if I were to have my own exhaust system made, I would copy the Quicksilver, single muffler design using a flowmaster or magnaflow muffler using aluminized piping at 2.5" diameter. That way you save a lot of weight and have a very free flowing exhaust at possibly half the price of the aftermarket exhausts out there. This is exactly what I did with my M3 and it turned out very nice, both performance wise and sound wise.

To give you an idea of how relatively simple it would be for a competent muffler shop to fab an exhaust, take a look at the one on my other car here on my website.