05-24-2020, 03:24 PM | #243 | |
Straight Six Convert
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Drives: 2019 X3 M40i
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Location: Cotswolds, UK
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2019 G01 X3 /// M40i in Carbon Black, 718M 21's, M Sport + Pack, Pano, F/Mirrors, Full Screen CarPlay Activated, ThinkWare F770 F/R DashCams, Gyeon Q2 Pure Ceramic Coated. PCW BackBox Mod
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05-24-2020, 04:43 PM | #244 | |
Happy M40i driver
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Drives: 2020 X3 M40i
Join Date: Dec 2019
Location: Brussels (Belgium) & Costa Mesa (CA)
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Picking up my brand new X3M40i on Tuesday after waiting approx 5.5 - 6 months Really curious about the stock sound, but always in for more. My friend @ PPE in Belgium can tune in the pops, bangs and farts so that’s also on the planning together with an engine tune... |
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06-06-2020, 11:25 PM | #246 |
Jedi samurai ninja turtle
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Drives: X3 M40i 2018
Join Date: May 2012
Location: Sydney, Australia
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To all the backbox modders,
I'm keen on giving this a go, but I have a catless DP, and I'm wondering if this is going to sound way too mental?! Any advice? : |
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06-07-2020, 10:53 PM | #247 | ||
BMW Elite Master Tech | HV Gen 5 | HV Specialist
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06-27-2020, 05:54 PM | #248 |
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Drove in sport plus mode for 15 mins, left car running, felt exhaust coming from driver side, pulled fuse and boom it worked. Reading what everyone was saying stressed me out and really had me torn on whether I should do this or not.... stop freaking out people and just do it! I'm so glad I did! The comfort mode sounds like it has a little more beef to it which I like. Sport mode and sport plus growels nicely and cleaner and I still get the pops and cracks (only in sport and sport plus).
Thanks Guys, Newbee Great Mod!!!! |
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06-27-2020, 06:49 PM | #249 |
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Just did this to my car. Is it just me or is there a very slightly loss of low end torque? Don’t know if it’s just placebo effect.
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thechrisjones24.00 |
06-28-2020, 01:26 PM | #250 | |
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09-06-2020, 11:27 PM | #252 |
Cowboy Astronaut Millionaire
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Drexel_Lake23.50 |
03-02-2021, 09:58 AM | #256 |
Long Time Admirer, First Time Owner
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Anybody done this in California, and still passed smog? I have a little time (I hope) before I have to consider a smog, since only had the X3 for about 10 days.
But, it IS California. . . |
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03-03-2021, 01:30 AM | #258 |
BMW Elite Master Tech | HV Gen 5 | HV Specialist
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Any changes to the exhaust after the catalyst are pretty much free game. It just makes it loud. Doesn't affect emissions which all smog cares about. It may be illegally loud but smog could care less as long as stock emissions components are not affected.
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UncleWede17979.50 |
03-05-2021, 01:46 AM | #260 |
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2021 X4m40i
JB4 VRSF Catless Downpipe Straight Mid Pipe RPI Exhaust with OEM tips https://youtu.be/aQE2p2uZ3rk
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Current: 2021 Alpine White X4M40i
Past: 2018 Tanzanite Blue 340i IG: oemplusx4 |
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09-11-2021, 04:16 AM | #261 |
Brigadier General
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I’d removed the fuse for the ASD (I have HK audio) but that didn’t seem to have any effect. The exhaust flap fuse removal worked fine, though recently I’ve noticed a whine/drone from the rear.
It’s going in for its first service next week, so I popped the fuses back in. Exhaust flap has stayed open even in Comfort so am I doing something wrong, or is the flap likely to be stuck? EDIT: it transpires that the actuator valve was faulty, so a replacement is on order.... Last edited by Blacktemplar; 09-15-2021 at 11:26 AM.. |
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09-16-2021, 02:29 PM | #262 | |
Happy M40i driver
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Drives: 2020 X3 M40i
Join Date: Dec 2019
Location: Brussels (Belgium) & Costa Mesa (CA)
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X3M40i_Nev Mine is finally where I want it. The only additional step would be a downpipe + pops & bang but not doing it. Don’t want to get in trouble with the warranty So this is back box fully modded, both resonators modded and the GPF. Sounds wonderful and very deep, exactly what I wanted. No drone on normal comfort setting and on the highway perfectly quiet as normal when you stay under 80-85 mph, also in comfort of course. |
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04-04-2022, 04:08 PM | #263 |
Private First Class
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Hi guys
Question: the OPF/GPF modell (EU) Version have this sh** Opfs, when i want to go catless or for 200cel cat, what is changing? Have someone a picture from down how it looks with opf and wihtout? My oreference is vrsf, but they told me it is not compatible with opf cars. I want to „delete" the opf and go with just a 200cel cat Thanks Limi |
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