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QTP Remote Cutouts Installed Today!

14K views 46 replies 19 participants last post by  Lakotiy 
#1 ·
And I cant stop grinning! For anyone on the fence, with a total cost of, less then $800, I can honestly say its the best money I've spent on a car mod. It is not ungodly loud and has a nice tone to it. Summit has everything you need to install and a good exhaust shop will have it done in a few hours. I also had them move my mufflers back a little over an inch so my stock tips extend past the Vorsteiner diffuser.

I listened to all the exhaust systems I could find on youtube and various message boards, and thought I was pretty convinced to go with the Tubi Rumore, which sounds great, but I thought a little quiet. I was a little hesitant to remove the secondary cats or even gut them in case I have a more conservative buyer one day, or in case emissions laws get more strict. These cutouts seemed like a great option and I couldn't be happier.

As far as wiring and installation, I wired everything in the trunk and attached the power/ground wires to available studs in and around the fuse box/battery. I had to extend the provided wiring and add large ring terminals, but no big deal. I wanted to pass the wires through a factory opening, but the only accessible ones would put the wires in a vulnerable spot on the bottom of the truck and I didn't like that idea. I ended up drilling a 3/4" hole on the right side, forward part of the trunk. 3/4" is the smallest hole that the QTP wiring will fit through. I have a plastic plug that will fit the hole, and I will coat both sides with sealer. I'm sure you can find a wiring grommet at Pep Boys or West Marine that will fit, too. It can be a little tricky to get the wiring to the needed areas above the rear control arms, especially when working while on jack stands, but it can be done. Just be sure to use wire ties and keep the wires from touching exhaust or moving suspension parts. I had them end where the E-brake cables pass over the large open area of the control arms. I left some slack tied there so they would hook up easily to the actuators. Test the entire system before installing. I found a bad wire connection in one of the supplied cables. Only took a few seconds to fix while on a workbench, but would have been a nightmare if it was under the car.

The other installation quirk is the suspension has these 2 bars, roughly 18" long that are bolted to the bottom of the car. They had to be removed to install these cutouts. I am going to see if I can either modify them, or have some replacements made, bent differently, to put back on. It looks like many of the M5 guys don't bother putting them back on, so maybe they are not necessary unless you are doing 180 on the Autobahn! hiha

When I get a chance, I will take a bunch of pictures and maybe some videos showing the whole system.
 
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#3 ·
Pics coming soon! If it wasn't dark out when I finally got home, I'd have them now!

Where are you in PA? You should check out www.buckscountyexotics.com !
 
#4 ·

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#30 ·
Heres some pics! Last one shows how my exhaust now passes the diffuser.

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I'm giving very serious thought about adding these cutouts to my 2007 M6. Now that you have had them installed for a while, would you still recommend them?
 
#5 ·
Pardon my ignorance: what performance gains does one get from this mod?
 
#6 ·
I would guess the performance gains are minimal because it is only bypassing the mufflers. We did it strictly for sound purposes. Being able to adjust the noise level is nice and so is coming through my neighborhood quietly, late at night. Not for everyone, but cost effective and versatile.
 
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#8 ·
:biggrin: got that right!
 
#10 ·
I look forward to hearing these on Saturday.
 
#11 ·
I'm hoping you'll hear me coming for a couple blocks! lol
 
#13 ·
Yeah, that's a bit far for a car meet, especially at 8 AM on a Saturday morning. lol
 
#14 ·
Hey Zel,

Please post your pictures of how you wired everything up. I have already welded mine but left the valve off because I did not have time to wire it up. I was planning to do it this week, your write up was great. But pictures are even better.

Thank you, oh and where the video or fly by? Its sounds so good huh!

I posted some videos here:
http://www.m5board.com/vbulletin/e6...scussion/257585-love-strucken-w-fly-clip.html
 
#15 ·
Hey Wally, your install looks clean and professional! I added, or at least think I added pics up above that shows how I wired it in and ran the wires. Basically, I went in the trunk, lifted up the tool tray to expose the fuses and battery terminals. I attached negative terminal to the small bolt on the battery terminal itself. I believe a 10mm socket will be what you need. For the positive, I extended the wire a little bit and ran it into the fuse panel are and placed it on one of the small positive terminal studs and put another nut on top to hold it in place. I used double faced tape and attached it on the passenger side of the Styrofoam. You should be able to see this in the pictures I posted, but if not, I can add some arrows and circles to point out what I did, more clearly.

I'll work on getting some short videos on drivebys this week!
 
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#27 ·
I've gotten a lot of complements on the sound. I had another M6 owner come over to ask about it at a recent Cars n Coffee. He planned on buying cat-back exhaust until he heard the QTP. It only gets raspy when you wind it out a bit. Normal driving and shifting at lower RPM's never gets raspy. Sometimes, Raspy is GOOD!:biggrinbounce:
 
#28 ·
Nice mod! I chuckled when you said Tubi Rumore was too quiet though. Mine seems loud to the point of getting some negative attention. Almost wish I had gone the cutout route.
 
#29 ·
I jumped on the QTP band-wagon yesterday and I could not be any happier! lovelove Like others have said, the sound with them full open is intoxicating, but having the ability to drive through the neigborhood and not scare little children is great. Definitely worth the money - especially being that the total cost is a fraction of any section 3 out there. I love the sound of E-race, but $3000 is crazy expensive for just mufflers.
Will try to get some videos up in the next couple days.
 
#34 · (Edited)
How is that done?
 
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