Engine Drivetrain 1st Gen Cooper S Most liked posts in thread: R56 exhaust on R53?

Hrm... linky no worky.

 

Not enough to warrant the cost of relocating the battery and getting a new exhaust.

 

Here ya go....
Saw this on ebay today, seems pretty low cost...

mini cooper items - Get great deals on Exhaust Systems Car, Mufflers Accessories items on eBay Stores!

 

With our exhaust you do not have to relocate the battery box .
It is a straight back system designed by a Magnaflow engineer that now has his own shop .
The increase in power has been stated as "HOLLY S**T". :eek6:

Mark

 

1+ you do NOT not need to relo the battery with the G4 set up. I have an 05 r53 with a straight back exhaust. RMW header (2) Magnaflow SS mufflers in line, and a custom tig welded 2 1/2 SS pipe under the battery box.
Is it cool? yes
Is it Loud? hell yeah
Does it increase power? Butt Dyno says yes.

 

R53 MCS M45 SC Not speaking TURBO of anykind.......

Depending on which "Borla" muffler you have it is more than likely closer or exceeding the maximum Exhaust CFM the R50-R53 can flow? So it may be better performance for you not go to a oem of any kind from any model MINI?
The flow rate of a MINI 1.6 is 396cfm.
Most aftermarket mufflers systems (average) available not custom one off designs have a sound rating from 78db(+-5db) to **110db (+-5db)**@WOT. *There are too many factors to be more precise with the end sound db results.
The increase in HP for any system replacing a *stock R53 is between 1-3 HP(-1-3hp?). This can vary if you formulate other changes at the time of a system replacement which may change the total output? Also the sound does not constitute a power increase. In fact in many instances were individuals claim to feel more power the actual tested result was less than the system replaced. Sound has such a psychological effect on us?
This may be why you do not see many manufactures of MINI exhaust systems offering Dyno tested Data of a before and after install of their exhaust system on a base line stock MINI?
Just because the muffler you chose has a good flow rate does not mean that the rest of the exhaust flows as well. Now the bummer is the trade off. If you increase the exhaust pipe diameter to increase flow you also slow down the exhaust velocity which means you lose power(simple explanation). So it really becomes a careful research to choose the right system between the sound you want and what you expect or desire in an increase in power?

 

What kind of clearance issues do you have under the battery box?

 

Yes,

Go to Group4Autosport.com.

+1 to all explanations, that's why ours was designed by an exhaust engineer.

We did not start out to have an exhaust but had to to get the diffuser to function properly.

We have no ground clearance problems at all .

Mark

 

Sorry I do not.

 

I would love to see a shot from under the car on the R53 exhaust.

 

I will see if I can take one and post it up in my Garage here on MA give me about a 1/2 hour or so.

2 Pictures added see "Under the Bonnet" section in my garage.

Chili-PA's Garage :: The Mistress

 

Ummm...sure looks like a clearance problem for me at least. No way would I run that exhaust around here.

Thanks

 

WOW! how is the heat to the battery ? Even when I ran my pipes around the battery box I had to use thermal protection on the battery as well the box. Ever feel the inside of the box and see if your battery is getting cooked?