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OEM //M silencer mod
- exdos
- Senior Member
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Re: OEM //M silencer mod
Jimmybell,
I've just had a watch/listen to Dalecan's video and his exhaust sounds great: it's definitely more characterful (i.e. louder than OEM) but I wouldn't say it pops and crackles. Here's a link to couple of videos of mine, this first one is of my Z3MC (S54 engine) with completely gutted exhausts: http://www.youtube.com/watch?v=lms43vxfz30 and this next one is of my Z4MC with my silencer mod and my modified air-intake: https://www.youtube.com/watch?v=-ZaDO7NbN_Y
gwatson,
Graeme, I agree that the video does show that car exhaust does have lots of pops and crackles. For it to do that, there must be fuel randomly injected when the throttle is closed. Perhaps this is a result of deliberate mapping on behalf of the manufacturers to give owners the pos and crackles that they seem to crave? It certainly doesn't happen like that with any of the BMW models with aftermarket silencers fitted with S54 engines with OEM ECU maps that I've heard.
I've just had a watch/listen to Dalecan's video and his exhaust sounds great: it's definitely more characterful (i.e. louder than OEM) but I wouldn't say it pops and crackles. Here's a link to couple of videos of mine, this first one is of my Z3MC (S54 engine) with completely gutted exhausts: http://www.youtube.com/watch?v=lms43vxfz30 and this next one is of my Z4MC with my silencer mod and my modified air-intake: https://www.youtube.com/watch?v=-ZaDO7NbN_Y
gwatson,
Graeme, I agree that the video does show that car exhaust does have lots of pops and crackles. For it to do that, there must be fuel randomly injected when the throttle is closed. Perhaps this is a result of deliberate mapping on behalf of the manufacturers to give owners the pos and crackles that they seem to crave? It certainly doesn't happen like that with any of the BMW models with aftermarket silencers fitted with S54 engines with OEM ECU maps that I've heard.
- Beedub
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Re: OEM //M silencer mod
the f-type is actually TUNED to do this...
ESS, evolve, BPM all offer specific TUNES thats have this "feature" , mine kinda burbles but this is definitely something that can be altered via specific tuning.....
ESS, evolve, BPM all offer specific TUNES thats have this "feature" , mine kinda burbles but this is definitely something that can be altered via specific tuning.....
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- exdos
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Re: OEM //M silencer mod
Thanks for that. That's what I thought. My point is; swapping silencers doesn't produce pops and crackles if the car doesn't produce pops and crackles with OEM silencers.Beedub wrote:the f-type is actually TUNED to do this...
ESS, evolve, BPM all offer specific TUNES thats have this "feature" , mine kinda burbles but this is definitely something that can be altered via specific tuning.....
- jimmybell
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Re: OEM //M silencer mod
Just a thought - has anyone tried doing before/after comparisons of volume levels?
I think there's a good simple iphone app that can give a reading.
Got the idea from this vid - which is interesting. Suggests the perforated tubing numbs some sound, i wonder what a full straight pipe would sound like?
https://www.youtube.com/watch?v=3sUx_j56_AM
I think there's a good simple iphone app that can give a reading.
Got the idea from this vid - which is interesting. Suggests the perforated tubing numbs some sound, i wonder what a full straight pipe would sound like?
https://www.youtube.com/watch?v=3sUx_j56_AM
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- exdos
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Re: OEM //M silencer mod
I've been messing about with modding OEM exhaust systems for a few years now and tried all manner of different configurations and I can tell you a straight through pipe will drive you mad and deaf.
- ga41
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Re: OEM //M silencer mod
I AM NOT MAD NOR DEAF
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- gwatson
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Re: OEM //M silencer mod
Yeap, I started mine in the garage when the silencers were away, made me giggle for about 20 seconds, but was incredibly loud at just idle, insane when revving. Would be horrendous under load and would cheapen the car in my view.exdos wrote:I've been messing about with modding OEM exhaust systems for a few years now and tried all manner of different configurations and I can tell you a straight through pipe will drive you mad and deaf.
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- ga41
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Re: OEM //M silencer mod
YOU WILL ALL HAVE TO SPEAK UP A BIT
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- exdos
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Re: OEM //M silencer mod
We'll be the judge of that.ga41 wrote:I AM NOT MAD NOR DEAF
- jimmybell
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Re: OEM //M silencer mod
Hah ok - thanks Exdos. Obviously in Dalecan's pics there is only a short amount of perforated pipe - but he's confident there's no drone so .. should be good
I'm impressed with the E92 video.
I'm impressed with the E92 video.
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- Beedub
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Re: OEM //M silencer mod
for anyone thats need further confirmation.... This is a offered tuneable feature, may s/c companies and tuners have been offering it for a while now.... they can even offer a backfire feature which even more hurts my soul.
http://www.m3post.com/forums/showthread.php?t=935493
heres the thread on making your car do it.... exactly like the f-typre ETC.... its all tune related,,, why this is a desirable and payable thing now-days ill never no.....
http://www.m3post.com/forums/showthread.php?t=935493
heres the thread on making your car do it.... exactly like the f-typre ETC.... its all tune related,,, why this is a desirable and payable thing now-days ill never no.....
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- ga41
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Re: OEM //M silencer mod
Ha! I think it's brilliant! I'd love me some extra crackles!
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- gwatson
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Re: OEM //M silencer mod
John, just to add, with the roadster and roof down you definitely hear more burble on the over-run once the exhaust is warmed up, than with the roof up or I assume in a coupe. So if the exhaust is louder, I would expect the sound of that to be increased.
I'm not saying it's going to be shooting flames
I'm not saying it's going to be shooting flames
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- jimmybell
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Re: OEM //M silencer mod
I'd definitely concede a roadster likely gets the benefit of extra noise to offset getting cold and wet so much.
Your discs arrived? Vids Vids Vids
Your discs arrived? Vids Vids Vids
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- gwatson
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Re: OEM //M silencer mod
Roadster gets all the better attributes, looks, sound and ride
Yeah it has But need to get the kids down to bed, before I can get out to the garage
Will try and get a cold startup video tonight at least!
Yeah it has But need to get the kids down to bed, before I can get out to the garage
Will try and get a cold startup video tonight at least!
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E70 X5 30d
Previous:
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