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post #1 of 39 Old 16th July 2007, 06:51 PM Thread Starter
ContractR
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custom exhaust idea

i've been pondering this for a while. since i had my resonators removed, i've been really enjoying the new sound a lot, but i'm also starting to get an itch for a complete exhaust. however, i don't want to loose the "stealth" of a quit exhaust. i'm actually enjoying the fact that i can roll through the neighborhood without anyone noticing, where as before with my old e39 and tubi, that wasn't possible. so this is what i came up with: what if you can have an adjustable exhaust, kinda like those with the butterfly valves that some new cars have, that when you want it is loud or quiet. furthemore, i was at a tuning shop with my cousin this weekend and it turns out that i can actually have this done. there is a mechanism for $150/each that welds into the exhaust work, eighter before or after the resonators depending on how loud you want it, which has this "valve" built into it. basically, how it works is like this: you cut the exhaust where you want this thing to be, weld it in place where the cut was, run the wiring for the button to open and close it, and that's it. then, when you push the button it opens the exhaust pipping creating essentially just stratight pipes before or after the resonator. this would make the car super loud cause it would be like having no mufflers at all because the exhaust would be open before them. then when your done having fun and scaring people, press the same button again, the valve closes, and you're back to stock. What you guys think about it? i'm really considering doing this. this way i get the both ends of the extreme.

Black/Indy
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20'' Iforged Senekas
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post #2 of 39 Old 16th July 2007, 06:59 PM
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Sounds like a great idea. Kreisseig for a fraction of the cost! Let us know how it goes (and post video!).

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post #3 of 39 Old 16th July 2007, 07:38 PM
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Very interesting.

2006 Indy Red/Blk/Alum loaded,
H&R springs w spacers, 167(M6) wheels,
Dinan 3.91, Evo Pulley
CF grills, CF vents, ACS Spoiler
Vorsteiner CF Vented Hood, CF lower steering wheel
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post #4 of 39 Old 16th July 2007, 08:17 PM
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Great Idea
I have this sort of option on my 996.
It cost me an extra $ 5,000.00 all done, but when you do push this button,
what a difference.
I would be interested - need to see some pics and maybe a video or two.
Still comtemplating on taking out the carbon filters, and but an a bit weery, that it will cause some "ERROR".
I have not had any to date (touch wood). Can anyone give me more particulars on these filters - does it effect any warranty issues??
I have got all the instructions - does it REALLY make a difference??
thanks,

Duff - THE "UP NORTH" Crazy M5 NUT!!!
2006 - M5 - Saff. Black on black - all opt. except SAT radio & HUD
2003 - Porsche 911 C4S - Blue on grey - Tiptronic
2001 - E39 M5 - Red on Black - Dinan Stage 2
2002 - H2 - Black on Grey (Wife's) SOLD
2007 - DIAMOND White Escalade (Wife's)
2004 - H3 - Yellow on Black "Baby Hummer" - daughter's
2003 - Harley V-Rod - "Done to the MAX" (anniversary gift from wife - complete with RED bow!) SOLD - On a LOOOONG waiting list for the NEW M3!
1979 - Honda CBX - "6 into 6" (sounds like a Ferrari on steriods!)

Life is what you make it - All you need is a BRAND NEW M5 and a beautiful wife!!!! (And I am the luckiest man alive - I HAVE BOTH!!!!)
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post #5 of 39 Old 16th July 2007, 08:44 PM
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It's a great idea......I've been pondering the same thing myself, but never found the actual hardware purposefully built for it......both Ferrari and Lamborghini do this on their stock exhausts....so it mustn't be impossible to accomplish....

One thing I wonder though is that would it be possible to do without the button? I drove a Gallardo around a track for a weekend a couple of weeks back...and the Lambo guy and I chatted a bit about the exhaust.....what he indicated was that you can't really buy an aftermarket exhaust for the car because their exhaust was specially designed as a "performance" enhance for it...Essentially, when you're coming down the straightaway at full throttle, that is when the ports/valves open up automatically. Now, I am not sure if this is mechanically induced or some electronic command from the ECU....

BTW...2Duff.....installed my BMC air filters this weekend so I figured I would remove the carbon filters at the same time since I was there......I also had reserves, especially when you are about to take the filters out and it says "DO NOT REMOVE" in bold letters on the plastic support......but I figured what the hell!!!! So far so good......no errors reported and it seems to have helped somewhat (although the BMC probably made a difference too)...BUT when removing them, I made sure I took them out in one piece without breaking anything so that if something does come up, I can put them back before going to see the local dealer!!!!

2008 M5 Space Grey Metallic/Full Merino Black
2004 SL500 Capri Blue Metallic/Beige
1997 Porsche 993 Cabriolet Silver/Blue Roof/Blue Interior
2007 Siena XLE AWD Limited Gold/Beige Leather (To carry the kids)
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post #6 of 39 Old 16th July 2007, 08:54 PM
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Thanks a mil Volks,
You have given me more faith!!!
As for the BMC Filters, I too, would like to do this.
Did you do this yourself?
Was it a difficult change-over?
If you wouldn't mind, where did you purchase them from, and how long did it take to get them?
thanks for the help, again, I just might tackle these two mods, BEFRE I take the car to the dealer for three - count them - three recalls!!!
Thanks again,
Duff

Duff - THE "UP NORTH" Crazy M5 NUT!!!
2006 - M5 - Saff. Black on black - all opt. except SAT radio & HUD
2003 - Porsche 911 C4S - Blue on grey - Tiptronic
2001 - E39 M5 - Red on Black - Dinan Stage 2
2002 - H2 - Black on Grey (Wife's) SOLD
2007 - DIAMOND White Escalade (Wife's)
2004 - H3 - Yellow on Black "Baby Hummer" - daughter's
2003 - Harley V-Rod - "Done to the MAX" (anniversary gift from wife - complete with RED bow!) SOLD - On a LOOOONG waiting list for the NEW M3!
1979 - Honda CBX - "6 into 6" (sounds like a Ferrari on steriods!)

Life is what you make it - All you need is a BRAND NEW M5 and a beautiful wife!!!! (And I am the luckiest man alive - I HAVE BOTH!!!!)
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post #7 of 39 Old 16th July 2007, 09:25 PM
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post #8 of 39 Old 16th July 2007, 09:37 PM
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Quote:
Originally Posted by 2duff View Post
Thanks a mil Volks,
You have given me more faith!!!
As for the BMC Filters, I too, would like to do this.
Did you do this yourself?
Was it a difficult change-over?
If you wouldn't mind, where did you purchase them from, and how long did it take to get them?
thanks for the help, again, I just might tackle these two mods, BEFRE I take the car to the dealer for three - count them - three recalls!!!
Thanks again,
Duff
Yes, I did the filter change myself....it was very straight-forward. There is a thread somewhere on the board that explains the charcoal filter removal....when you follow those instructions, you get to the filters too to replace them....(he mentions the orange filters in his thread). It took about 20 minutes to do both sides.....piece of cake. The only thing I would caution is about the actual removal of the charcoal filters, the instructions show actually grabbing the filter and pulling it out.....I tried this tentatively and it did not feel like I could get them out with breaking them.....so I used a screwdriver between the filter lip and the housing to carefully pry them off.....they were not easy to get off!!!!

I ordered them straight off the BMC store website on the 4th of July and I had them at home (Canada) on the 13th of July.....pretty quick considering they had to go through customs...etc.....

2008 M5 Space Grey Metallic/Full Merino Black
2004 SL500 Capri Blue Metallic/Beige
1997 Porsche 993 Cabriolet Silver/Blue Roof/Blue Interior
2007 Siena XLE AWD Limited Gold/Beige Leather (To carry the kids)
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post #9 of 39 Old 16th July 2007, 09:53 PM
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THANKS, Noble.
This is EXACTLY what I have been looking for.
My concern - will it through out any errors??
That is my LAST worry, but an important one!!!
I am gping to contact them right away, and get details.
Will keep the board up to date!!
Thanks again,
Duff

Duff - THE "UP NORTH" Crazy M5 NUT!!!
2006 - M5 - Saff. Black on black - all opt. except SAT radio & HUD
2003 - Porsche 911 C4S - Blue on grey - Tiptronic
2001 - E39 M5 - Red on Black - Dinan Stage 2
2002 - H2 - Black on Grey (Wife's) SOLD
2007 - DIAMOND White Escalade (Wife's)
2004 - H3 - Yellow on Black "Baby Hummer" - daughter's
2003 - Harley V-Rod - "Done to the MAX" (anniversary gift from wife - complete with RED bow!) SOLD - On a LOOOONG waiting list for the NEW M3!
1979 - Honda CBX - "6 into 6" (sounds like a Ferrari on steriods!)

Life is what you make it - All you need is a BRAND NEW M5 and a beautiful wife!!!! (And I am the luckiest man alive - I HAVE BOTH!!!!)
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post #10 of 39 Old 16th July 2007, 09:59 PM
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Quote:
Originally Posted by NobleM400 View Post
Sounds like a great project. Are these the ones you plan to use?

http://www.quicktimeperformance.com/QTEC/index.php
Great find. That should definately work without a problem!

2006 Indy Red/Blk/Alum loaded,
H&R springs w spacers, 167(M6) wheels,
Dinan 3.91, Evo Pulley
CF grills, CF vents, ACS Spoiler
Vorsteiner CF Vented Hood, CF lower steering wheel
905R-driver
MP32-irons
ProV1x-ball
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