Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.
Front silencer removal
- Jollyjoiner
- Senior Member
- Posts: 2010
- Joined: Sat Nov 29, 2014 9:32 am
- Location: Chesterfield
Front silencer removal
There is lots of talk about changing the rear box to get a better sound out of a 3.0 !!!
But has anyone left the rear box as it is and removed the front silencers as in the realoem parts list
http://www.realoem.com/bmw/showparts.do ... g=18&fg=10
Would this help to give the desired effect of making it sound a tad sweeter ?
But has anyone left the rear box as it is and removed the front silencers as in the realoem parts list
http://www.realoem.com/bmw/showparts.do ... g=18&fg=10
Would this help to give the desired effect of making it sound a tad sweeter ?
2009 35i DCT silver
SLT mapped to 365bhp
SLT mapped to 365bhp
- Bad_Pritt
- Senior Member
- Posts: 2725
- Joined: Fri Jun 29, 2012 3:51 pm
Re: Front silencer removal
I've been told that it would change the tone of the exhaust sound to a higher note, but never heard one with only the mid mufflers removed. Just read on another thread that you can also largen the holes in the exhaust tips, free mod with probably loads effect.
- Bad_Pritt
- Senior Member
- Posts: 2725
- Joined: Fri Jun 29, 2012 3:51 pm
- Jollyjoiner
- Senior Member
- Posts: 2010
- Joined: Sat Nov 29, 2014 9:32 am
- Location: Chesterfield
Re: Front silencer removal
Yes i've seen this but it's a little permanent drilling the holesBad_Pritt wrote:I've been told that it would change the tone of the exhaust sound to a higher note, but never heard one with only the mid mufflers removed. Just read on another thread that you can also largen the holes in the exhaust tips, free mod with probably loads effect.
2009 35i DCT silver
SLT mapped to 365bhp
SLT mapped to 365bhp
-
- Newbie
- Posts: 19
- Joined: Wed Jul 23, 2014 3:31 pm
- Location: Manchester
Re: Front silencer removal
I had the silencers removed a couple of months ago on my 3.0si...
Idle - became slightly more rumbley
Driving - not a dramatic improvement but definitely a noticeable change ( a friend could here me drivin down his street for a change). It is a bit louder at a higher tone, it does make me want to go further, but doesn't sound Chavy.
Driving low RPM - no droning
On the down gearing and letting off the acceleration it does a couple of nice burbles and the odd Pop.
I had my mot this week and the machanic drove it off down the street and to me it sounded perfect could maybe be a little bit louder but sounded nice
Idle - became slightly more rumbley
Driving - not a dramatic improvement but definitely a noticeable change ( a friend could here me drivin down his street for a change). It is a bit louder at a higher tone, it does make me want to go further, but doesn't sound Chavy.
Driving low RPM - no droning
On the down gearing and letting off the acceleration it does a couple of nice burbles and the odd Pop.
I had my mot this week and the machanic drove it off down the street and to me it sounded perfect could maybe be a little bit louder but sounded nice
BMW Z4 3.0 SI Roadster
-
- Member
- Posts: 255
- Joined: Fri Dec 12, 2014 10:56 pm
Re: Front silencer removal
Did this in 2 steps for a friend of mine. Firstly we only cut one of the mid silencers out - slight difference but barely noticeable, you wouldn't know. Secondly, we cut both out and replaced them with straight bypass pipes. Noticeable increase in sound and a little more free flowing while revving. You get nice pops and bangs when you let off the pedal but it's none of that stupid loud saxo chavvy ricer sound Didn't notice any drone either.
I'd suggest putting clamps or flanges in, that way you can always go back to standard if you don't like it ( I doubt that though - sounds much better IMHO ).
Best of luck and remember to post vids of it up before and after!
Cheers!
I'd suggest putting clamps or flanges in, that way you can always go back to standard if you don't like it ( I doubt that though - sounds much better IMHO ).
Best of luck and remember to post vids of it up before and after!
Cheers!
- Jollyjoiner
- Senior Member
- Posts: 2010
- Joined: Sat Nov 29, 2014 9:32 am
- Location: Chesterfield
Re: Front silencer removal
Cheers guys, I think I'll be getting this done to mine this year then
2009 35i DCT silver
SLT mapped to 365bhp
SLT mapped to 365bhp
-
- Newbie
- Posts: 19
- Joined: Wed Jul 23, 2014 3:31 pm
- Location: Manchester
Re: Front silencer removal
Very cheap mod my local garage charged me £30 to fit the bypass pipes with flanges so well worth it and not much lost if you don't like it I supposeJollyjoiner wrote:Cheers guys, I think I'll be getting this done to mine this year then
BMW Z4 3.0 SI Roadster
- Jollyjoiner
- Senior Member
- Posts: 2010
- Joined: Sat Nov 29, 2014 9:32 am
- Location: Chesterfield
Re: Front silencer removal
This was my thinking, get it flanged the same and if me no likey then i can swap it back, but by the reports from people that have done this then it sounds like it will give just what i'm after.Sclay_ wrote:Very cheap mod my local garage charged me £30 to fit the bypass pipes with flanges so well worth it and not much lost if you don't like it I supposeJollyjoiner wrote:Cheers guys, I think I'll be getting this done to mine this year then
2009 35i DCT silver
SLT mapped to 365bhp
SLT mapped to 365bhp
- nfbr
- Member
- Posts: 722
- Joined: Wed Aug 13, 2014 1:47 pm
- Location: Irlam, Manchester
- Contact:
Re: Front silencer removal
Video clips required
nfbr's 2007 BMW Z4 3.0si Sport Coupé - Car Diary/Blog/Build Thread
Ruby Black - Steptronic - Champagne Merino leather.
I like taking Photos, Cars, Technology and Rock Music
-
- Member
- Posts: 216
- Joined: Sat Mar 26, 2016 4:34 pm
Front silencer removal
Resurrecting this one as i have the car booked in for front silencer removal next week and wanted to check on peoples experiences of doing this, better sound? Power loss etc. Also, ive benn quoted 80+vat, is this reasonable?
Any feedback appreciated
Cheers
Any feedback appreciated
Cheers
- Jollyjoiner
- Senior Member
- Posts: 2010
- Joined: Sat Nov 29, 2014 9:32 am
- Location: Chesterfield
Front silencer removal
Let us know how you get on and what you think of the sound differenceJimBob78 wrote:Resurrecting this one as i have the car booked in for front silencer removal next week and wanted to check on peoples experiences of doing this, better sound? Power loss etc. Also, ive benn quoted 80+vat, is this reasonable?
Any feedback appreciated
Cheers
oh and what engine is yours ?
2009 35i DCT silver
SLT mapped to 365bhp
SLT mapped to 365bhp
-
- Member
- Posts: 216
- Joined: Sat Mar 26, 2016 4:34 pm
Front silencer removal
Will do!
It's an e86 si
Cheers
It's an e86 si
Cheers
-
- Member
- Posts: 216
- Joined: Sat Mar 26, 2016 4:34 pm
Front silencer removal
Update...
Had this done now and I'm pretty pleased with the results. When potering it just sounds pretty standard, bit deeper on tickover but when step on it it really has a nice tone. I've noticed the occasional muted pop, don't expect loads of crackle, you'd need to change the backbox for that. It also seems to have added a bit more power and improved throttle response but no evidence for that!
Only downside is the mechanic fried a lamda getting some nuts off and is claiming it's not his fault!! No wonder they all have a bad rep...
Had this done now and I'm pretty pleased with the results. When potering it just sounds pretty standard, bit deeper on tickover but when step on it it really has a nice tone. I've noticed the occasional muted pop, don't expect loads of crackle, you'd need to change the backbox for that. It also seems to have added a bit more power and improved throttle response but no evidence for that!
Only downside is the mechanic fried a lamda getting some nuts off and is claiming it's not his fault!! No wonder they all have a bad rep...
- Limonge
- Newbie
- Posts: 44
- Joined: Wed Jan 10, 2018 3:05 pm
Front silencer removal
Hello! I am thinking in doing the same in my facelift 2.5si, did you bypass both of the silencers? I attached the picture to make it easier (red arrows). Did you do anything to the final muffler or is it stock?JimBob78 wrote: ↑Sat Dec 03, 2016 7:21 pmUpdate...
Had this done now and I'm pretty pleased with the results. When potering it just sounds pretty standard, bit deeper on tickover but when step on it it really has a nice tone. I've noticed the occasional muted pop, don't expect loads of crackle, you'd need to change the backbox for that. It also seems to have added a bit more power and improved throttle response but no evidence for that!
Only downside is the mechanic fried a lamda getting some nuts off and is claiming it's not his fault!! No wonder they all have a bad rep...
Cheers!