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I'll probably do a dyno run with the resonator in, have it cut out, and have a straight pipe clamped in; dyno it again with the resonator out and see how it effects the power, if it is a power loss, I will just clamp the resonator back in. Do you really think it would effect the value that much?
I'll probably do a dyno run with the resonator in, have it cut out, and have a straight pipe clamped in; dyno it again with the resonator out and see how it effects the power, if it is a power loss, I will just clamp the resonator back in. Do you really think it would effect the value that much?
There's also the issue of the adaptive tuning of the ECU, and the weight savings. Since you're dropping a bit over 20 lbs, you can have about 1-2 hp LOSS and still have the same HP/Weight ratio.
Think of all of these items as resistors in an electrical circuit. Taking out one resistor only really effect the circuit if it is a change in total resistance. So, you may get some benefit from a header without an exhaust system, but you're also probably not going to get the full benefit unless you have a less restrictive exhaust that can take advantange of the improved header.
Matt
ps, there is no agreed best exhaust. May have tone concerns, some with total volume. Also tuned exhausts can be tuned for many effects. So the questing is better asked "what is the best exhaust for XXX type of driving", and then you'll still get the answer I wrote
Quote:
Originally Posted by MiamiE
what would result from adding a header system to a MCS with the stock exhaust system and an Alta intake? would not having an exhaust system affect the performance of the header system? what header system do you all recommend?
There's also the issue of the adaptive tuning of the ECU, and the weight savings. Since you're dropping a bit over 20 lbs, you can have about 1-2 hp LOSS and still have the same HP/Weight ratio.
I emailed FAST TOYS who have on their website that the One Ball produces 9hp w/ Dyno graph.
Since I am looking for an exhaust system and found this number to be impressive I contacted them - asking if the Mini had any other modifications and they came back saying that the Mini did have a free flow air.
If anyone in the So Cal area is looking for an exhaust system to try the One-Ball mod on, I have a brand new exhaust system that was just taken off of my 2005 MCS (with only 80 miles on the clock) that I'm trying to get rid of. Since the 05's are a better sounding exhaust system than the previous years, it might be a great starting point for the One-Ball mod. Here's a link to the Marketplace thread for the exhaust system:
I may have overlooked it, but does anyone have a sound clip of the One-Ball mod? I'm interested in doing it and I'd love to hear it first.
Thanks..
but a guy I sold some parts to heard it and said it sounded like stock. It's a bit louder, and with no ressonator, you get an occational pop or burble (no problem there for me). But I also have the HAI, MTH and the VGS, so some of the poping and burbling may have other causes.....
Inside the car it's a bit louder too, but not too much. But with my list of mods (which are pretty mild), my hands free kit doesn't like the higher RPM bands! Oh well, the price of power.....
I have the Magnaflow exhaust and love the nice deep tone but it was a touch loud and could drone on the highway. I stopped by a local muffler shop and looked at what they had. I needed to keep the resonator pretty small so that it would fit up in the area the exhaust is run. That left me with the 4" dia. body resonator which meant that the biggest I could go was 12" long and a 2" in/out. They flared it to 2-1/4" and it fit inside the exhisting pipe. It's a free flow design so I wasn't sure it would be enough, but it quieted down nicely without loosing a good sound when wrapped up. It took out much of the highs and it seems a little deeper. I've lost most the drone on the highway and the idle is nice and quiet.
As a note, a 2-1/2" in/out would be better and you could fit a 18" long body in there pretty easy. All the ones at the shop like that had a 6" dia. body though which I don't think would have fit up in there and would have hung pretty low.
I'll post this on the exhaust thread u
I wanted to report what I had done. I actually happened accross a Mini owner yesterday on accident that had a Borla Street and was intereted in trading -after- I tried the extra resonator if I didn't like it. The Borla was really nice and quiet, and I was happy to have a fall back. However I'm pretty happy with the result and will stay with the Magnaflow.
I stopped by a local shop and looked at what they had. I needed to keep the resonator pretty small so that it would fit up in the area the exhaust is run. That left me with the 4" body resonator which meant that the biggest I could go was 12" long and a 2" in/out. They flared it to 2-1/4" and it fit inside the exhisting pipe. It's a free flow design so I wasn't sure it would be enough, but it quieted down nicely without loosing a good sound when wrapped up. It took out much of the highs and it seems a little deeper. I've lost most the drone on the highway and the idle is nice and quiet.
As a note, a 2-1/2" in/out would be better and you could fit a 18" long body in there pretty easy. All the ones at the shop like that had a 6" dia. body though which I don't think would have fit up in there and would have hung pretty low.
I took some video before/after reving in the drive for reference. I'll see if I can put ssomething together and hopefully you can hear the difference. Not sure if it captured the change.
Well, I played them back to back and it just didn't sound any different on the clip. It's odd since it seems so much quieter! Sorry I can't back up my findings, but it really is quieter.
From what ive heard (pardon the pun ) the One Ball is just a louder stock sounding system.
My question is about the Borla. I want to get it, but im concerned it may be too loud. I liked the sound on the clip, but for thoes who drive with the Borla Sport, do you like the sound or is it a bit too ricey?
I started this one two years ago when I was exhaust shopping. I'm not sure how much of the info is changed or how many of the links still work, and it predates the site update so you have to sift through all the ""gt" stuff, but... there you go.
Personally I think it's pretty lame that there's a sticky thread about S exhausts but not about Cooper exhausts. Much of the serious mod crowd on this forum regards modding the Cooper as a pointless enterprise, so we have to dig a bit deeper for information.
__________________ "I'd rather have a bottle in front of me than a frontal lobotomy." - Tom Waits
Thanks to everyone for thier great input and sound clips. Just a word about improved HP with exhaust changes. I don't think the major criteria for changing exhaust should be H.P. You don't get that much increase in most of these systems. Remember most of these published HP gains are sales oriented stats from the people who designed or are selling the systems. The testing is far from standardized and the cars are not standardized so comparing HP gains is really comparing an apple grown in Washintom to a pineapple grown in Hawaii. Doesn't make sense. Not every car tested came off the line the same year, they probably all have different mods and tweeks, the ambient temp/elevation/humidity was not standardized and you know the dinos are all different. Point is HP ratings are very subjective. In addition it doesn't take into consideration the changes in the torque curve of the car which for me was much more improved than HP with my Dinan set up. Just a lot wider torque cure, more usable torque all acrosss the range. No more low end stumble and a bit less downshifting around town. (To be fair, I admit I also have all the other Dinan Signature Series Mods on the car)
A word about the Dinan set up. No it isn't a remake of any other system. It is enginerred from the ground up to work with the mods sold by Dinan. If you don't improve throttle body diameter, air intake volumne and temp and ECU you can't optimize performance from an exhaust change. So unless you are going to increase those parameters, exhaust, in my mind, is about getting the sound you like and maybe a nice pairs of tips! (Hummmmm)
Anyway I like the Dinan cause it does't pop, just a subtle deep burble when you get out of the throttle. No drone on the hiway at all. I can listen to valium rock or clasical cello on the stereo at high speeds without interference from the exhaust and when I get into the throttle hard it will drown out Metalica at high decibels. A nice combination of Deep tones on a background of banshee like screams.
Downside to Dinan: Rt tip collects more soot than left tip, = darker inside
Fix= Spray inside of left tip with flat black paint. Picky-picky-picky
Lots of good systems out there. Go to meets/functions, listen to different systems and if poss. drive/ride in some to get real feel. Don't buy for advertised HP ratings. Buy for the sound, fit, finish, looks and gut feeling. Remember most of your time is spent not looking at it but listening to/feeling it from your drivers seat. Just my $.02 enjoy
why do you say hard to remove stock exhaust? i will be doing this sometime this week
Quote:
Originally Posted by miniraider
hey guys i did not think changing the exhaust would make that big of diffrence!
i was surprised to see how much the cars power changes and better it realy performes, i got the borla race and it was easy to install but removing the old exhaust was not so easy..........highly recomand that you change the exhaust system...........
Thanks to everyone for thier great input and sound clips. Just a word about improved HP with exhaust changes. I don't think the major criteria for changing exhaust should be H.P. You don't get that much increase in most of these systems. Remember most of these published HP gains are sales oriented stats from the people who designed or are selling the systems. The testing is far from standardized and the cars are not standardized so comparing HP gains is really comparing an apple grown in Washintom to a pineapple grown in Hawaii. Doesn't make sense. Not every car tested came off the line the same year, they probably all have different mods and tweeks, the ambient temp/elevation/humidity was not standardized and you know the dinos are all different. Point is HP ratings are very subjective. In addition it doesn't take into consideration the changes in the torque curve of the car which for me was much more improved than HP with my Dinan set up. Just a lot wider torque cure, more usable torque all acrosss the range. No more low end stumble and a bit less downshifting around town. (To be fair, I admit I also have all the other Dinan Signature Series Mods on the car)
A word about the Dinan set up. No it isn't a remake of any other system. It is enginerred from the ground up to work with the mods sold by Dinan. If you don't improve throttle body diameter, air intake volumne and temp and ECU you can't optimize performance from an exhaust change. So unless you are going to increase those parameters, exhaust, in my mind, is about getting the sound you like and maybe a nice pairs of tips! (Hummmmm)
Anyway I like the Dinan cause it does't pop, just a subtle deep burble when you get out of the throttle. No drone on the hiway at all. I can listen to valium rock or clasical cello on the stereo at high speeds without interference from the exhaust and when I get into the throttle hard it will drown out Metalica at high decibels. A nice combination of Deep tones on a background of banshee like screams.
Downside to Dinan: Rt tip collects more soot than left tip, = darker inside
Fix= Spray inside of left tip with flat black paint. Picky-picky-picky
Lots of good systems out there. Go to meets/functions, listen to different systems and if poss. drive/ride in some to get real feel. Don't buy for advertised HP ratings. Buy for the sound, fit, finish, looks and gut feeling. Remember most of your time is spent not looking at it but listening to/feeling it from your drivers seat. Just my $.02 enjoy
I build/buy for the performance or weight savings. I've found that racy exhaust sounds come free if you design an exhaust for performance. Same with intake noise or whatever. Vive la difference....
Anyway, I think that you'll find that if you set performance (power, weight or handling) goals, that when you're done you'll have a car that looks aggresive, sounds aggressive and turns aggresively.
with this 02 cents of mine, and the two from you, we only need $2.96 more for a cup of Starbucks!
Matt
FYI, my exhaust is (later this week), OBX header, Magnaflow high flow CAT, 2.5" tubing, and muffler TBD (maybe resonator too, if it's too loud for my wife). Cooper lower valence too. This will cost less than a SS Cat-Back system..... Including the header!
) the One Ball is just a louder stock sounding system.
Much of the serious mod crowd on this forum regards modding the Cooper as a pointless enterprise, so we have to dig a bit deeper for information.
