Crapbag's E46 LSB Coupe

Discussion in 'Member Rides' started by Crapbag, Nov 28, 2018.

  1. 2 Dec 2018 at 5:26 PM #41
    Crapbag

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    [​IMG]

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    And my favourite of this set

    [​IMG]
     
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  2. 2 Dec 2018 at 5:50 PM #42
    Crapbag

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    Originally posted 21st Nov 2015


    Well it's been a while since I last updated the thread, but in all honesty not a lot has happened.


    You see for a while now I've wanted a bit more from the exhaust as since fitting the airbox I can't even hear the rasp when at full tilt due to the roar!


    Ive heard quite a few backboxes and full systems in the flesh along with the usual ones online and with the exception of a few ( @paul46 springs to mind) they just don't do it for me. Ideally what I wanted was a valvetronic one but the only one I have seen that I liked was the Filthyhabits fabrication one, but even this one had me questioning how much drone i would get with the valves closed due to it running a relatively small back box. Which had me finally narrowing it down to a Rogue Engineering X-pipe with electronic cutout valve.


    This allows me to keep the OEM backbox with the eurotips fitted therefore keeping the sound "relatively" stock sounding with the valve closed. I say "relatively" because the X-pipe not only uses a single larger diameter pipe (appose to the std 2 smaller diameter pipes) but it removes the small silencer from the system which is part of the std section 2. Which will hopefully release a small amount of rasp and volume but in no way be obtrusive. with the added benefit of zero drone (when the valve is closed)


    But with the valve fully open it will/should be crazy loud! which is what I want for those occasions when i just want to be hooligan! But what also appeals to me is the fact that via the momentary rocker switch located in the cigarette lighter housing I can put the valve anywhere between 0 and 100% open. Therefore allowing me to modulate just how much noise I want and balance it just right against the airbox. Another bonus is that during track days I will be able to get the sound level just right for the given noise regs. I fully appreciate that with the valve fully open I will loose some torque and bhp. But Im willing to take this hit for the times when i just want NOISE!


    Now this is where our very own @060motorsports comes in. I dropped Ejaz a message asking how much/how quickly to which he quickly responded with figures that made me happy and the deal was done. As per normal with Ejaz I was kept bang up to date and supplied with tracking info as soon as it was available.


    The X-pipe arrived super quick and I wasted no time in getting unwrapped and inspected. The welds are very nice and clean not the most amazing I have ever seen but by far and away better than most Ive seen on the run of the mill systems. Here are some pics to give you an idea.


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    This is a small video showing the valve opening and closing off the battery. It sounds a little laboured and this is because the car hasn't been driven for 3 weeks and could do with a boost and once running off the alternator it will be slightly quicker and a lot smoother.


     
  3. 2 Dec 2018 at 5:51 PM #43
    Crapbag

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    First off I ran the wiring. Now there is very little info online and I hope this helps someone at a later date.


    I started by looking for easy to reach bodywork bungs and luckily there is one that runs the rear light level sensor into the cabin, on the drivers side near the rear right subframe mount. So I decided to run the loom through this.


    [​IMG]


    [​IMG]


    I used my good old friend self amalgamating tape to seal up the bung and make it weather tight


    [​IMG]


    I decided to run the loom from one side to another by removing the charcoal fuel vapour filter protective shroud so that I could attach the loom to to some of the pipework in there.


    Once this was done it was onto running the wiring from the boot to the front of the car. This wasn't difficult but fiddly and time consuming.


    I ran the loom under the sound deadening under the rear bench


    [​IMG]


    Then under the carpet on the trans tunnel


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    [​IMG]


    Once I got it to here, I ran it down the left hand side of the centre console and to the back of the cigarette lighter. Where I soldered into the switched 12v for the cigarette lighter. I now had to decide where to run the switch. I didn't want to butcher anywhere as I like anything I do to be fully reversible. So decided to use the housing for the cigarette lighter by removing the electrical element leaving only the housing which is the perfect diameter to take the switch. Ive always hated how cables around the gearstick/switch area so I'll be relocating the cigarette lighter in the rear ashtray for charging the phone.


    So now all thats left to do is actually install the pipe!


    So bright and early this morn I got the car in the air and set about installing it. It all went very smoothly with only the cat-OEM section 2 bolts needing to be angle ground off. So within 20 mins the OEM cats-section 2 were off the car and on the ground ready to swap the brace and mid section exhaust rubber over to the RE X-pipe. Again all this was uneventful and it was fitted back into the car within the hour. All lining up perfectly. With only a small amount of rotation on the ECV needed (cutouts are pre machined in to allow for this) to get it above the floor level to save it getting ripped off! As there would be no will it won't it. It would be just ripped clean off!


    So this is where we were at.



    [​IMG]


    So onto the first start! Well let's just say it made me let out an uncontrollable laugh! It's crackers!








    I then went on a quick test and bloody hell! The words anti-social and ASBO Spring to mind with the valve open! But in the best possible way imaginable. With the windows up it really isn't that bad. Don't get me wrong it's frigging loud but not ear defenders loud. Yes there is drone but that is banished by closing the valve. From the outside it is race bike loud! To the point that everybody stops and turns around to look at WTF is coming to kill them! Haha


    With the valve closed there is a definite volume increase but with zero drone (as hoped and expected) and a totally different tone. A lot more depth to it. And I'm pained to say. The rasp has all but gone. There is a slight amount at low-ish revs but your hard pushed to hear it. Which if I'm honest is a bummer as I love the rasp it's what defines our M3's. But again if I'm honest since fitting the Airbox I've not been able to hear the rasp unless I have the seats down. So in reality I haven't really lost it, if you follow my logic?!


    So to summarise.


    Am I happy with the RE X-pipe, with regards to build quality and firment? Yes 100% it fitted perfectly and all the welds were spot on.


    Do I like the sound with the valve closed? 95% yes. As I said I wish I had some more rasp but we all knew I was going to loose it. And the added volume and tone sounds nice and purposeful.


    Do I like the sound with the valve open? 100% yes! It's a ducking animal! Sounds pure evil! And for those times when I just want to be a hooligan it fits the bill without doubt!


    Thanks for reading,


    Craig.
     
  4. 5 Dec 2018 at 9:08 PM #44
    Specialist

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    That’s a shame dude looks fantastic.
     
  5. 5 Dec 2018 at 9:29 PM #45
    Crapbag

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    Yeah man proper shame for others, but on the other hand makes mine a pretty unique Mod. There were only a handful made.
     
  6. 6 Dec 2018 at 7:34 PM #46
    Struggle

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    where did you get the valve from and how much? I need two for my E92.
     
  7. 6 Dec 2018 at 7:39 PM #47
    Crapbag

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    It’s built into the X-pipe and by Rogue Engineering.

    The ECV itself is made by DMH performance.
     
  8. 6 Dec 2018 at 7:47 PM #48
    FrazerD

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    Those rolling shots look amazing, as does your car. If you haven’t already, you should get your favourite made into a canvas, would look fab.

    Cheers :thumbsup:
     
  9. 6 Dec 2018 at 7:50 PM #49
    Crapbag

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    Thanks man. I keep meaning to but keep forgetting. Steve has some mad skills like!
     
  10. 6 Dec 2018 at 10:36 PM #50
    theworkerb

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    The rolling photo with the sunset in the background is amazing!

    That exhaust sounds savage!
     
  11. 6 Dec 2018 at 10:49 PM #51
    Crapbag

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    @theworkerb it certainly is savage! But stock(ish) at the flick of a switch.

    Yeah I think the sunrise one is still my favourite too!
     
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  12. 8 Dec 2018 at 2:41 PM #52
    Burgess

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    One of my favourite M3’s Craig. Solid subtle modifications. Thank you for taking the time to upload the build thread on here! Thanks again for making me spending a fortune after your airbox demo all those years ago :muttley:
     
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  13. 8 Dec 2018 at 3:26 PM #53
    Crapbag

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    @Burgess I do love a good demo! Haha Thanks for the compliment too. Genuinely humbled by the kind words from all.

    I’ll be further updating today and tomorrow. And hopefully get all you guys up to speed.
     
  14. 8 Dec 2018 at 6:18 PM #54
    m3driven

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    That’s a great exhaust system!
     
  15. 8 Dec 2018 at 7:26 PM #55
    Crapbag

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    Thanks @m3driven I’m on a constant mission to put together my own version of the E46M system to my ears at least. I’m currently 3 steps down the road from my last post. And still not there! Haha.
     
  16. 9 Dec 2018 at 4:27 AM #56
    m3driven

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    Some times the journey is more satisfying than the destination!
     
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