01-02-2015, 01:17 PM | #45 | ||
Captain
53
Rep 785
Posts |
Quote:
Quote:
I did ask about hard break-in and was told not to do it & to follow the procedure specified within the handbook. For previous BMWs, asked about replacing RFT with non-RFT and just got told that other customers had done it, but it's not something that a BMW dealer can recommend. |
||
Appreciate
0
|
01-02-2015, 01:24 PM | #46 | |
Live for today tomorrow never comes
2010
Rep 9,522
Posts |
Quote:
With respect to changing run-flats (Not fitted to M cars anyway) to none run-flats, I would check with the insurance company first, because in the event of any accident, tyres are checked depending on what happened, BMW do not recommend as you rightly say.
__________________
Live for now, life is too short.
2023 LCI M5 Marina Bay Blue/ Smoked White Leather, the very last of the F90 M5. |
|
Appreciate
0
|
01-02-2015, 02:13 PM | #47 | |
Captain
53
Rep 785
Posts |
Quote:
And high five to your master tech! |
|
Appreciate
0
|
01-03-2015, 08:55 AM | #48 |
Private
10
Rep 78
Posts |
It's baffling why BMW would use valves to limit the beautiful exhaust note of the car but add fake sound through the speakers into the cabin. Goofy ass Germans. Don't even get me started on the climate control....
|
Appreciate
0
|
01-08-2015, 05:16 PM | #49 |
Private
15
Rep 92
Posts |
So today i decided to do the FLAPPER MOD.
My M5 its a LCI 2014 and its Competition Package ! It took about 10 minutes to do this MOD. I made a little vídeo , it sucks only revs to 4k rpm. [u2b]http://youtu.be/Ucq_A5cgTsg?list=UUFfNDB-_VYnMrz6GyoOL18g[/u2b] Im waiting for my AMS Catless to arrive....
__________________
10´Alpine Weiss E92 M3 LCI - GONE
13´Porsche 991 2S - GONE 14´M5 F10 CP Pack Imperial Blue - Current 14´Mini JCW GP2 R56 - SOLD 14´Suzuki Hayabusa 50th Edition - Current |
Appreciate
1
SuperSonic0.00 |
01-09-2015, 10:11 AM | #51 |
Private
15
Rep 92
Posts |
same way as you
[u2b]https://www.youtube.com/watch?v=vmSFR7aFq54[/u2b]
__________________
10´Alpine Weiss E92 M3 LCI - GONE
13´Porsche 991 2S - GONE 14´M5 F10 CP Pack Imperial Blue - Current 14´Mini JCW GP2 R56 - SOLD 14´Suzuki Hayabusa 50th Edition - Current |
Appreciate
0
|
01-09-2015, 11:22 AM | #52 |
Private First Class
50
Rep 165
Posts |
my M5 is non comp, so that may be the distinquishing factor. if you have a cp than the original stock may be different to start with. I can tell you as others with the non cp, wiring open the valve flaps is easy and makes a significant difference in sound tone. and its only
|
Appreciate
0
|
01-09-2015, 11:40 AM | #53 |
Banned
118
Rep 292
Posts
Drives: 17 M2 - 14 M5
Join Date: Jan 2015
Location: Philly
|
Hey Guys did this today and let me start off by saying I was extremely skeptical that this would even create a 10% difference in sound...well long story short boy was I wrong. I went to home depot got 16 Guage metal wire, jacked the car up, and was done in less then 5 minutes. I started the car and ..it makes a HUGE difference in sound. I took a before and after video and will post it on here as soon as im done editing it.
|
Appreciate
0
|
01-09-2015, 11:51 AM | #54 | |
Live for today tomorrow never comes
2010
Rep 9,522
Posts |
Quote:
__________________
Live for now, life is too short.
2023 LCI M5 Marina Bay Blue/ Smoked White Leather, the very last of the F90 M5. |
|
Appreciate
0
|
01-09-2015, 11:55 AM | #55 |
Private First Class
15
Rep 112
Posts |
I discussed with my SA and he told me to use a good wire and remove the vacuum lines. I was told that there are no warranty issues with exhaust mods unless I change the downpipes.
..so I ordered the exhaustmeister..installed in 10 minutes and bang..a louder exhaust under 3k rpm without drone! The reason I did not wire the flaps is to avoid some unwanted attention in office parking during startup :/
__________________
2014 BMW F10 M5 LCI
|
Appreciate
0
|
01-09-2015, 02:36 PM | #56 |
Banned
118
Rep 292
Posts
Drives: 17 M2 - 14 M5
Join Date: Jan 2015
Location: Philly
|
Anyone know how to post a video without going through YouTube? Trying to post the before and after.
|
Appreciate
0
|
01-12-2015, 11:12 AM | #57 |
Private
10
Rep 46
Posts |
Wired mine open over the weekend. Didn't jack the car up so it was a bit difficult to get underneath and reach control arm but certainly do-able. Shoved the rubber handle of a hammer into the exhaust to hold flap open while I wired it which seem to work quite well. Unfortunately, weather and road construction by house doesn't permit me to drive the car. Ugh!
__________________
Drives:
2013 Alpine White M5 2014 X1 xDrive35i Cadillac Escalade Subaru Outback (it's required in Boulder!) |
Appreciate
0
|
01-12-2015, 09:59 PM | #58 | |
Spiro83
16
Rep 100
Posts |
Quote:
|
|
Appreciate
0
|
03-05-2015, 02:58 PM | #59 |
Private
10
Rep 78
Posts |
Have any of you taken your cars in for service with the valves tied? And if so did they say anything? I have a service appointment next week related to brakes and wondering if I should cut off the zip ties to play it safe. Kind of pain putting them back on though...
__________________
Current: 2013 M5, 2012 Jeep Rubicon
Retired: 2008 M3 coupe, 2007 Z4 M Coupe, 2003 350Z |
Appreciate
0
|
08-12-2015, 08:57 PM | #60 | |
Captain
189
Rep 850
Posts |
Quote:
Took the car in for new rear pads, picked it up this morning. My SA asked if I had put a new exhaust on. Told him I simply wired open the flaps and he was very impressed. No issue whatsoever. |
|
Appreciate
0
|
08-15-2015, 06:35 AM | #61 |
Private First Class
15
Rep 140
Posts |
Some people say the exhaust valves play a role in performance by increasing back-pressure, which in turn increases torque at lower revs.
I've also heard ppl complaining of the car feeling more sluggish after installing aftermarket exhausts (which don't have valves of course) So I'm wondering if there is any truth to this theory? |
Appreciate
0
|
08-16-2015, 06:40 PM | #62 |
Enlisted Member
3
Rep 42
Posts |
On any turbo car, any back pressure results in degradation of performance. In a perfect world, we wouldn't have exhausts, but rather dump it all at the exit of the turbo. THIS maximizes torque due to instantaneous turbo spool up. The more your turbo is able to dump crap the better the power/torque.
|
Appreciate
0
|
08-21-2015, 01:38 AM | #66 |
Private First Class
47
Rep 176
Posts |
OK, finished the mod.
Its louder on idle now, and the lower revs which is great. A bit of a pain for the Akra, but it was easiest when the tips were off. This for me was about a 15 minute job, I have no idea how you guys did it in 5. |
Appreciate
0
|
Post Reply |
Bookmarks |
|
|