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XBimmers | BMW X3 Forum BMW X3 and X4 Forums | F25 (2011 - 2017) | F26 (2014 - Current) First Generation BMW X4 (F26) General Forum Stock Intake vs BMS Intake (Dyno) vs Downpipes/Intercooler

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      09-27-2017, 10:52 AM   #1
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Stock Intake vs BMS Intake (Dyno) vs Downpipes/Intercooler

Hey guys after lots of data/testing/dyno time/highway pulls/logging I will be creating threads on my results.

To start off this thread to help you guys AVOID spending money on Open Air Intake systems like the BMS one. I have Dyno the stock intake box with stock filter, the BMS intake and the Stock Box with AFE Pro Dry Drop-in Filter.

Conclusion: if you want to upgrade the intake just get the AFE Dry Filter for best bang and not lose power after 5000rpm
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F80 ZCP | bootmod3 | Dragy TuneOnly FullTank Times
60-130mph Stock Cats:
F80Paul E85 6.7s | HCP E60 7.3 | HCP E40 7.5 | E30 OTS 7.8s | Stg1 93 8.9s | Stock 11.1
w/ CTS Turbo DPs: HCP E60 6.90s
X4 M40i CTSTurbo DP/FMIC BM3 Stg2 93 4.1s 0-60 | 12.4@110mph 1/4m

Last edited by FSociety; 03-20-2019 at 07:21 AM.
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      09-27-2017, 10:52 AM   #2
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Green is Stock Intake Box w/ AFE Dry Drop-in Filter
335whp 269wtq at 6500rpm

Blue is BMS Intake
317whp 255wtq at 6500rpm

Red is fully stock car + Stock Air Box/Paper Filter
315whp 254wtq at 6500rpm

(Green and Blue have same mods, except different intake)


Bone stock car
With Downpipes and Intercooler + Stock Intake
With DP/FMIC + BMS Intake
With DP/FMIC + Stock Intake and AFE Drop In Filter

The Gains with upgrading the Downpipe and Intercooler you can see/feel throughout the whole RPM range more than just peak gains.
Attached Images
  
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F80 ZCP | bootmod3 | Dragy TuneOnly FullTank Times
60-130mph Stock Cats:
F80Paul E85 6.7s | HCP E60 7.3 | HCP E40 7.5 | E30 OTS 7.8s | Stg1 93 8.9s | Stock 11.1
w/ CTS Turbo DPs: HCP E60 6.90s
X4 M40i CTSTurbo DP/FMIC BM3 Stg2 93 4.1s 0-60 | 12.4@110mph 1/4m

Last edited by FSociety; 03-20-2019 at 07:21 AM.
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      09-27-2017, 09:28 PM   #3
Duke I
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Nice work FS! Thanks.
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      10-10-2017, 07:48 AM   #4
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FS, thanks for all of your work and dyno assessments.

Looking for the AFE filter and cannot find the one to fit the f26. Did you use the f25 as a fit or other? Thanks. Duke
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      10-10-2017, 09:58 AM   #5
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Originally Posted by Duke I View Post
FS, thanks for all of your work and dyno assessments.

Looking for the AFE filter and cannot find the one to fit the f26. Did you use the f25 as a fit or other? Thanks. Duke
https://www.fcpeuro.com/products/bmw...er-x6-31-10197
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F80 ZCP | bootmod3 | Dragy TuneOnly FullTank Times
60-130mph Stock Cats:
F80Paul E85 6.7s | HCP E60 7.3 | HCP E40 7.5 | E30 OTS 7.8s | Stg1 93 8.9s | Stock 11.1
w/ CTS Turbo DPs: HCP E60 6.90s
X4 M40i CTSTurbo DP/FMIC BM3 Stg2 93 4.1s 0-60 | 12.4@110mph 1/4m
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      11-07-2017, 10:40 PM   #6
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FS. Got the AFE dry drop filter and have it installed. Thanks for the lead.

I tried to determine filtering capabilities vs OEM paper filter but haven't found info. AFE as a bit vague on the matter. Did you happen to find filtration performance comparisons?

Thanks. Duke
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      11-11-2017, 05:30 PM   #7
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Application?

I see that AFE application chart from pureuro shows aFe 31-10197 as a X6 replacement vs any mention of X4M. Is this the one you did buy and it fit? Thanks
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      11-12-2017, 12:03 AM   #8
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Yes.
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      02-07-2018, 05:00 PM   #9
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K&N 33-2428 High Performance Replacement Air Filter https://www.amazon.com/dp/B002L4X6BS..._Vw3EAb7HAAS6B

Wonder how the K&N drop-in is compared to AFe dry drop in. BMS intake I switch on n off when I feel like hearing extra noise 😀

Thanks for sharing the Dyno’s FSociety. Proves the butt dyno is correct with the stock airbox 👍🏼
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      02-28-2019, 08:44 PM   #10
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I swapped over to the AFe dry filter from BMS today, will hopefully get a log or two to see how it flows in terms of total air compared to BMS.
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AFe Pro Dry S // PS2 + Inlet // DV+ // FTP Boost Pipes // VRSF 5" FMIC // VRSF Downpipe // BM3 Stage 1 91 @ 5280'
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      03-05-2019, 10:38 AM   #11
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Apologies that the log is choppy, I think my phone was having a hard time: http://www.bootmod3.net/log?id=5c78d182ae729b79a8ca4f3c

AFe flows fine, my PS2 with BM3 Stage 1 91 flows ~15-20% more air than the BMS intake did on the stock turbo with stage 2: http://www.bootmod3.net/log?id=5bda6dbad10b437bd38fa21b

I think I have a bad boost solenoid (could be boost leak, but doubt it), which is why I'm not hitting targets.

When I get up to Stage 2 and Stage 2H I'll come back with more data.
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Current mods
Rockford Fosgate P3 // JBL MS-A5001 // MiniDSP
AFe Pro Dry S // PS2 + Inlet // DV+ // FTP Boost Pipes // VRSF 5" FMIC // VRSF Downpipe // BM3 Stage 1 91 @ 5280'
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      03-05-2019, 03:35 PM   #12
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Quote:
Originally Posted by doodlebro View Post
Apologies that the log is choppy, I think my phone was having a hard time: http://www.bootmod3.net/log?id=5c78d182ae729b79a8ca4f3c

AFe flows fine, my PS2 with BM3 Stage 1 91 flows ~15-20% more air than the BMS intake did on the stock turbo with stage 2: http://www.bootmod3.net/log?id=5bda6dbad10b437bd38fa21b

I think I have a bad boost solenoid (could be boost leak, but doubt it), which is why I'm not hitting targets.

When I get up to Stage 2 and Stage 2H I'll come back with more data.
Send these logs to support@protuningfreaks.com just incase there's something they can tweak for the 2H map.

I also noticed my IAT were better with AFE as well, it will be hard to beat stock intake box.
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F80 ZCP | bootmod3 | Dragy TuneOnly FullTank Times
60-130mph Stock Cats:
F80Paul E85 6.7s | HCP E60 7.3 | HCP E40 7.5 | E30 OTS 7.8s | Stg1 93 8.9s | Stock 11.1
w/ CTS Turbo DPs: HCP E60 6.90s
X4 M40i CTSTurbo DP/FMIC BM3 Stg2 93 4.1s 0-60 | 12.4@110mph 1/4m
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