E90 D3 Biturbo, where's my silencer?
E90 D3 Biturbo, where's my silencer?
Crawling about the E90 D3 Biturbo today and noticed it doesn't have a rear silencer but heat shield there from days when the car was once a BMW. Whats the sketch with that then? I know other Biturbos are the same after I asked a pal earlier when I looked at mine.
B3 3.3 Coupe #090
D3 2.0 Biturbo Touring #098
D3 2.0 Biturbo Touring #098
Re: E90 D3 Biturbo, where's my silencer?
Mines the same, 2009 D3 BT #114.
The Exhaust is Alpina specific so I guess they didn't see the need for it, no point removing the heat sheild. Doesn't really sound much different though, which is probably a good thing. Diesels with loud exhaust sound a bit weird IMHO.
Mark.
The Exhaust is Alpina specific so I guess they didn't see the need for it, no point removing the heat sheild. Doesn't really sound much different though, which is probably a good thing. Diesels with loud exhaust sound a bit weird IMHO.
Mark.
E90 D3 Biturbo 2009 No114
Black with Gold Decals
Piano black interior trim (looking for trim with Gold inlay, watch this space )
Upgraded Stereo system
Black with Gold Decals
Piano black interior trim (looking for trim with Gold inlay, watch this space )
Upgraded Stereo system
Re: E90 D3 Biturbo, where's my silencer?
No rear silencer here
JohnW
2008 B3 BiTurbo Coupe #161
Previous: 2011 D3 BiTurbo Saloon #373, 2014 F30 320iX M Saloon, 2009 M3 DCT Coupe, 2008 B3 BiTurbo Coupe #074, 2009 E82 123d Coupe, 2006 E92 325i Coupe, 2002 E46 325iSE Coupe, 1998 E36 318iSE Saloon
2008 B3 BiTurbo Coupe #161
Previous: 2011 D3 BiTurbo Saloon #373, 2014 F30 320iX M Saloon, 2009 M3 DCT Coupe, 2008 B3 BiTurbo Coupe #074, 2009 E82 123d Coupe, 2006 E92 325i Coupe, 2002 E46 325iSE Coupe, 1998 E36 318iSE Saloon
Re: E90 D3 Biturbo, where's my silencer?
I might be wrong here, but if memory serves the first box is the silencer and the back box is a resonator. The resonator is used to modify the sound of the exhaust. Given it’s a turbo diesel with a massive particles filter it’s not as noisy as NA and the scavenging that creates addition pulses.
Adam
Alpina XD3 #193
Alpina C2 2.7 #0525
E36 M3 Saloon
E30 track car M52
Previous
BMW - E30 325sport x2, 318is, 325 touring, E36 Coupe 318is, M3, E46 M3, E92 M3, E82 123d, F30 335d, F22 M240
Ford - Capri 2.0x2, 2.8x3, 3000gxl, RS3100, RS Cosworth Sierra 3dr, Cosworth Sapphire & Escort 4wd, RS2000, RS Focus Mk1 x2 & Mk2, Mondeo V6
Opel Kadette 1.2 S RWD (first car)
Alpina XD3 #193
Alpina C2 2.7 #0525
E36 M3 Saloon
E30 track car M52
Previous
BMW - E30 325sport x2, 318is, 325 touring, E36 Coupe 318is, M3, E46 M3, E92 M3, E82 123d, F30 335d, F22 M240
Ford - Capri 2.0x2, 2.8x3, 3000gxl, RS3100, RS Cosworth Sierra 3dr, Cosworth Sapphire & Escort 4wd, RS2000, RS Focus Mk1 x2 & Mk2, Mondeo V6
Opel Kadette 1.2 S RWD (first car)
Re: E90 D3 Biturbo, where's my silencer?
Yh the E90 D3 BT is lacking on the sound front, but its always going to struggle to sound good being a dirty diesel. My local garage fixed a water leak for me a while back and they always do a road test to make sure everything is fine. The garage is at the end of my road and I was outside when they took mine out. Its the owners son that does the road tests and he was clearly being very careful as I was watching him, but when he pulled away it sounded alright, no V8 clearly, but had a little rumble to it. No idea what it sounds like from outside when driving.
I wonder what one would sound like with a gutted DPF and straight through centre box?
I wonder what one would sound like with a gutted DPF and straight through centre box?
E90 D3 Biturbo 2009 No114
Black with Gold Decals
Piano black interior trim (looking for trim with Gold inlay, watch this space )
Upgraded Stereo system
Black with Gold Decals
Piano black interior trim (looking for trim with Gold inlay, watch this space )
Upgraded Stereo system
-
- Posts: 39
- Joined: Sun Feb 23, 2020 1:05 am
- Location: UK
Re: E90 D3 Biturbo, where's my silencer?
When searching my D3 BiT out I drove quite a few from completely standard to egr removed to dpf removed and modified or straight through exhaust. In the latter instances some had a remap whilst some didn't. It became apparent an untouched Alpina OE car was better for piece of mind.
The dpf removal and modified exhaust ones had more turbo whistle and and a deeper note when on boost, not forgetting sootage
- Ninety Right
BMW Alpina E90 D3 BiTurbo
BMW Alpina E90 D3 BiTurbo
Re: E90 D3 Biturbo, where's my silencer?
The dpf removal and modified exhaust ones had more turbo whistle and and a deeper note when on boost, not forgetting sootage
[/quote]
Yh absolutely and the issue is now any sign of smoke during the MOT test and instant fail. I have also heard that the MOT will soon include a test to make sure the emissions devices have not been tampered. I think for me rather than mess around and taking the risk, I will just clean until they can't be cleaned any more then replace. I'm about to order a new Whaler EGR Valve for just over £100 and only two bolts and two water pipes to change it. As for the DPF well it working now and I do longer trips regularly so will deal with it when it needs.
[/quote]
Yh absolutely and the issue is now any sign of smoke during the MOT test and instant fail. I have also heard that the MOT will soon include a test to make sure the emissions devices have not been tampered. I think for me rather than mess around and taking the risk, I will just clean until they can't be cleaned any more then replace. I'm about to order a new Whaler EGR Valve for just over £100 and only two bolts and two water pipes to change it. As for the DPF well it working now and I do longer trips regularly so will deal with it when it needs.
E90 D3 Biturbo 2009 No114
Black with Gold Decals
Piano black interior trim (looking for trim with Gold inlay, watch this space )
Upgraded Stereo system
Black with Gold Decals
Piano black interior trim (looking for trim with Gold inlay, watch this space )
Upgraded Stereo system