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Benefits of a Downpipe
09-01-2019, 02:02 PM
Post: #1
Benefits of a Downpipe
Hi Fanatics,

Compliments of the season,

Does anyone know what are the actual benefits to installing an aftermarket down pipe other than the advertised performance gains and the sound.


Will it improve longevity of the engine and turbo, will it lead to a more efficient running engine and components ?
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09-01-2019, 02:22 PM
Post: #2
RE: Benefits of a Downpipe
It does improve longevity of the turbo as there is less heat build up and throttle response. Power gains are minimal.
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09-01-2019, 02:45 PM
Post: #3
RE: Benefits of a Downpipe
Pops and Flames Fencelook

Current:
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09-01-2019, 02:59 PM
Post: #4
RE: Benefits of a Downpipe
Another advantage is, you can tell you buddies "ya boet I got downpipes" and get some street cred. Fencelook

330d E90 LCI DP & SW
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09-01-2019, 03:00 PM
Post: #5
RE: Benefits of a Downpipe
and some more pops Thumbs

DP will help release exhaust fumes faster allowing car to breathe better
Also Assisting in turbo spool up faster

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09-01-2019, 03:28 PM
Post: #6
RE: Benefits of a Downpipe
(09-01-2019 02:22 PM)yush1 Wrote:  Power gains are minimal.

Explain ?
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09-01-2019, 03:39 PM
Post: #7
RE: Benefits of a Downpipe
(09-01-2019 03:28 PM)dvst8 Wrote:  
(09-01-2019 02:22 PM)yush1 Wrote:  Power gains are minimal.

Explain ?

Opinions are divided on this. smile bounce
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09-01-2019, 03:45 PM
Post: #8
RE: Benefits of a Downpipe
(09-01-2019 03:39 PM)yush1 Wrote:  
(09-01-2019 03:28 PM)dvst8 Wrote:  
(09-01-2019 02:22 PM)yush1 Wrote:  Power gains are minimal.

Explain ?

Opinions are divided on this. smile bounce

oh, thought you had some actual data.

Hammerhead
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09-01-2019, 03:59 PM (This post was last modified: 09-01-2019 03:59 PM by Nick.)
Post: #9
RE: Benefits of a Downpipe
Just be careful you dont talk about your DP with your mates and let your Wife\GF hear.

They think DP is something else completely.

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09-01-2019, 04:22 PM
Post: #10
RE: Benefits of a Downpipe
(09-01-2019 03:59 PM)Nick Wrote:  Just be careful you dont talk about your DP with your mates and let your Wife\GF hear.

They think DP is something else completely.

RoflRoflRoflRoflRoflRofl
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09-01-2019, 07:03 PM
Post: #11
RE: Benefits of a Downpipe
(09-01-2019 03:45 PM)dvst8 Wrote:  
(09-01-2019 03:39 PM)yush1 Wrote:  
(09-01-2019 03:28 PM)dvst8 Wrote:  
(09-01-2019 02:22 PM)yush1 Wrote:  Power gains are minimal.

Explain ?

Opinions are divided on this. smile bounce

oh, thought you had some actual data.

Hammerhead

from my experiences previous

no significant power gain
but
because the exhaust flow is improved, the throttle response seems to be just that much more instantaneous, which translates to a better/faster out of the blocks, and getting on the power after a gear change....which translates to the "impression" to the driver, that it has more power.

I have no experience with doing down pipes on TURBO cars, so cannot agree or disagree with the increased reliability of turbo's

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09-01-2019, 07:34 PM
Post: #12
Benefits of a Downpipe
(09-01-2019 07:03 PM)Ralf* Wrote:  
(09-01-2019 03:45 PM)dvst8 Wrote:  
(09-01-2019 03:39 PM)yush1 Wrote:  
(09-01-2019 03:28 PM)dvst8 Wrote:  
(09-01-2019 02:22 PM)yush1 Wrote:  Power gains are minimal.

Explain ?

Opinions are divided on this. smile bounce

oh, thought you had some actual data.

Hammerhead

from my experiences previous

no significant power gain
but
because the exhaust flow is improved, the throttle response seems to be just that much more instantaneous, which translates to a better/faster out of the blocks, and getting on the power after a gear change....which translates to the "impression" to the driver, that it has more power.

I have no experience with doing down pipes on TURBO cars, so cannot agree or disagree with the increased reliability of turbo's


So dynos lie ?




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10-01-2019, 12:21 PM
Post: #13
RE: Benefits of a Downpipe
Thanks for all the information guys
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10-01-2019, 12:31 PM
Post: #14
RE: Benefits of a Downpipe
if you have a blocked cat and your downpipe removes that then thats also a benefit.

current: BMW E92 M3 (bearings could be fcukd)
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10-01-2019, 12:40 PM
Post: #15
RE: Benefits of a Downpipe
From personal experience, i feel a more responsive car in terms of acceleration, and if kept on cruise control in a before and after test i notice that i average 0.2l/100km less of fuel with the the downpipe on.
So it is more fuel efficient too.

Thats enough benefits for me...oh and such a lovely sound when combined with a M perf silencer smile bounce

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10-01-2019, 01:07 PM
Post: #16
RE: Benefits of a Downpipe
(09-01-2019 07:34 PM)r0ckf1re Wrote:  So dynos lie ?




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I didn't say that
All I said in my previous experience of owning an exhaust/tyre shop

No Dyno data to back up with
only did Golf's and Corolla's and Kadett's, etc

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10-01-2019, 01:22 PM
Post: #17
RE: Benefits of a Downpipe
Just my 2c My car (Audi A3 2.0T) was bought with a full RGM DP and Zorst, The dyno after all the hardware was fitted showed a increase of 20kw.

So there is a gain with fitting hardware to turbo cars, more so then to NA ones atleast

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10-01-2019, 03:00 PM
Post: #18
RE: Benefits of a Downpipe
(09-01-2019 07:34 PM)r0ckf1re Wrote:  So dynos lie ?

yeah the can.. If the correction factors are wrong Rofl
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11-01-2019, 07:27 AM
Post: #19
RE: Benefits of a Downpipe
On my NA 330i, I made 117wkw and went up to 121wkw after removing the headers and replacing with catless headers and downpipe to collect before 1st flange.

So definitely a gain for me and this on NA, I believe the gains are more on Forced InductionThumbs

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11-01-2019, 09:15 AM
Post: #20
RE: Benefits of a Downpipe
(09-01-2019 03:45 PM)dvst8 Wrote:  
(09-01-2019 03:39 PM)yush1 Wrote:  
(09-01-2019 03:28 PM)dvst8 Wrote:  
(09-01-2019 02:22 PM)yush1 Wrote:  Power gains are minimal.

Explain ?

Opinions are divided on this. smile bounce

oh, thought you had some actual data.

Hammerhead

@ferdibotha 's 330d went from 730nm to 752nm and stayed at 222.8wkw after fitting a DP,so a gain of almost 3% on torque only isn't very much,but it is a gain nonetheless.

Current:
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