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BRC SEQUENT 24 software for adjusting high gas consumption after installation

Roberto.k 116576 39
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How can I adjust a BRC Sequent 24 installation that uses about 35% more gas than petrol?

To reduce the excessive gas consumption, you need the BRC software, the interface, and a MAP pressure sensor, then create a basic map and make only small corrections to it [#1941717][#2042888] The recommended approach is to set one map with an acceptable error of about 2% instead of continually tightening the error limits, because repeated fine-tuning can make the car surge or create a “hole” in acceleration [#3370122] The system has automatic calibration, but installers still usually correct the settings a little at idle and while driving [#4261432] For adjustment, the extra MAP sensor is only used during setup and should be removed afterward; during normal driving it should not be selected as connected in the program [#4261432]
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  • #31 5360580
    partyza
    Level 12  
    Posts: 61
    Help: 3
    Rate: 97
    The latest from the BRC website - SEQ24 1.15
    Attachments:
    • Sequent24MY07_Ver.1.15.exe (7.99 MB) You must be logged in to download this attachment.
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  • #32 5360587
    partyza
    Level 12  
    Posts: 61
    Help: 3
    Rate: 97
    https://www.elektroda.pl/rtvforum/topic536521.html#3850304 - instruction for BRC seq24 is here.

    Added after 14 [minutes]:

    I am adding a new program to support SEQ 24, SEQ56 and SEQ Plug&Drive. 3 in one.

    FIRST ON THE LIST - SEQ P&D MANUAL in EN version.
    Attachments:
    • TA01Z038_P&D_sw_en.pdf (4.93 MB) You must be logged in to download this attachment.
    • P&D2.rar (6.63 MB) You must be logged in to download this attachment.
    • SequentPD_Ver.2.05.rar (145 Bytes) You must be logged in to download this attachment.
    • P&D1.rar (6.95 MB) You must be logged in to download this attachment.
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  • #33 5365296
    porto2005
    Level 11  
    Posts: 8
    Rate: 1
    partyza wrote:
    https://www.elektroda.pl/rtvforum/topic536521.html#3850304 - instruction for BRC seq24 is here.

    Added after 14 [minutes]:

    I am adding a new program to support SEQ 24, SEQ56 and SEQ Plug&Drive. 3 in one.

    FIRST ON THE LIST - SEQ P&D MANUAL in EN version.


    hello!
    Does this software require a key or registration? i.e. is there access to all features? I recently put on a sequenta24 for a Golf MK3 GTI 2.0 8V. I can't say the car is running, but it is paid for by high fuel consumption.
    Regards
    Porto
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  • #34 5394134
    dhorz
    Level 11  
    Posts: 18
    Rate: 8
    Hello
    I found an interesting site

    http://remixbg.com/softwarecontent-en.php

    there are a lot of interesting materials there, you just need to know what to look for..., for seq24 I found a lot in the third menu item -> "Gazovi uredbi" in the submenu -> "BRC", more in Polish would be useful... :)
  • #35 5396974
    partyza
    Level 12  
    Posts: 61
    Help: 3
    Rate: 97
    porto2005 wrote:
    partyza wrote:
    https://www.elektroda.pl/rtvforum/topic536521.html#3850304 - instruction for BRC seq24 is here.

    Added after 14 [minutes]:

    I am adding a new program to support SEQ 24, SEQ56 and SEQ Plug&Drive. 3 in one.

    FIRST ON THE LIST - SEQ P&D MANUAL in EN version.


    hello!
    Does this software require a key or registration? i.e. is there access to all features? I recently put on a sequenta24 for a Golf MK3 GTI 2.0 8V. I can't say the car is running, but it is paid for by high fuel consumption.
    Regards
    Porto


    Unfortunately, this BRC P&D program and others require a dongle. Without it, there is no way to run a program - let alone any programming. The cost of the BRC key - PLN 462.00 - according to the price list.
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  • #36 5415298
    partyza
    Level 12  
    Posts: 61
    Help: 3
    Rate: 97
    SEQ 24

    Unfortunately, I can't make it free...
    Attachments:
    • BRC-Sequent24_free.zip (9.32 MB) You must be logged in to download this attachment.
  • #37 16586743
    artur20002
    Level 2  
    Posts: 3
    Rate: 2
    what to cover? also wants to download
  • #38 16750630
    artur20002
    Level 2  
    Posts: 3
    Rate: 2
    I will try

    Added after 1 [minutes]:

    I keep downloading

    Added after 1 [minutes]:

    it's so stupid with these points

    Added after 1 [minutes]:

  • #39 17160437
    Szq
    Level 10  
    Posts: 42
    Rate: 6
    Great, it works. Thanks
  • #40 17628330
    karol1977
    Level 14  
    Posts: 124
    Help: 3
    Rate: 106
    Does anyone already have a programmer for brc sequent 32
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Topic summary

✨ The discussion revolves around the BRC SEQUENT 24 gas installation system, focusing on software solutions to address issues such as high gas consumption compared to petrol. Users share experiences and seek assistance with software for programming the SEQUENT 24, including the need for an interface and MAP pressure sensor. Several participants inquire about obtaining the software, troubleshooting connection issues, and adjusting settings for optimal performance. Key points include the importance of calibration, the potential for software keys to replace physical ones, and the necessity of proper installation to avoid performance issues. Users also discuss optimal switching temperatures from petrol to gas and share links to resources and manuals for the SEQUENT 24.
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FAQ

TL;DR: 35 % extra LPG use can drop to under 10 % after one 15-minute map recalibration; “always correct the automatic calibration” [Elektroda, tomhoj, post #4261432] [Elektroda, Roberto.k, post #1795668]

Why it matters: Cutting gas overconsumption pays for the interface key in <3 tanks and protects the reducer.

Who this helps: DIY owners and mechanics fixing high LPG usage or jerky running on BRC Sequent 24.

Quick Facts

• Typical BRC Sequent 24 switch-over temp: 30–38 °C cold start; 48–50 °C warm engine [Elektroda, borygo5, post #5336748][Elektroda, kiki99, post #5340757] • Official BRC dongle price: PLN 462 (≈€100) [Elektroda, partyza, post #5396974] • Software versions spotted: 1.02, 1.12, 1.15, MY08 multi-system [Elektroda, multiple posts] • Interface needs: USB-to-serial cable + additional MAP sensor during tuning [Elektroda, tomhoj, post #4261432] • Corrected fuel map error margin: 2 % recommended for stable power [Elektroda, kiki99, post #3370122]

How do I lower the 35 % higher LPG consumption on my BRC Sequent 24?

  1. Connect the interface, dongle, and temporary MAP sensor. 2. Run automatic calibration, then open the fuel map. 3. Redraw one complete map with ±2 % error margin and save. Users report consumption falling to within 10 % of petrol after this single pass [Elektroda, kiki99, post #3370122][Elektroda, Roberto.k, post #1795668]

Why won’t my laptop communicate with the ECU even though the program starts?

Check COM port speed (38 400 bps default), USB-serial chipset drivers, and match software version to ECU label (e.g., S24MY07 needs ≥1.12). Version mismatch causes silent handshake failure [Elektroda, mega3333, post #4823493]

Do I need two MAP sensors during tuning?

Yes. One MAP sensor stays in the LPG kit; a second temporary sensor measures manifold vacuum while you build the basic map. After tuning, deselect “MAP connected” and remove the extra sensor [Elektroda, tomhoj, post #4261432]

My Ford Mondeo jerks after warming up—possible causes?

Likely RPM signal source or pressure drop. Move the RPM pickup from ignition coil to crank sensor and redo calibration. Pressure tests should show stable 1.2 bar hot; falling pressure means reducer or filter issue [Elektroda, tomhoj, post #4265651][Elektroda, MKCOFE, post #4269379]

Can I replace the parallel-port dongle with software on modern laptops?

Only for the early 1.02 release; later BRC suites embed RSA checks in the ECU handshake, blocking software emulators. “I have not heard of replacing the physical key” beyond that version [Elektroda, tomhoj, post #4261432]

Which interface cables work with Sequent 24?

Any FTDI-based USB-to-K-line cable wired Tx/Rx to ECU pins 7 & 15 will connect. Installers often re-label Viaken STAG cables for BRC; the protocol is identical at 38 400 bps [Elektroda, mkaminski100, post #4956172]

Is there an English manual for Sequent 24 software?

Yes. An English PDF manual is linked alongside the Plug&Drive 3-in-1 installer [Elektroda, partyza, post #5360587] Another collection with diagrams sits under “Gazovi uredbi > BRC” on remixbg.com (Software Content page).

Edge case: what happens if I run calibration with error margin <2 %?

Users report throttle holes and stuttering similar to old vacuum systems because dosing becomes too precise for dynamic load changes [Elektroda, kiki99, post #3370122] Keeping the map at 2 % avoids this failure mode.

Quick 3-step guide to apply the vitamin crack to v1.02?

  1. Install original SQ24_102.exe and run once, then close. 2. Copy vitamin patch into the install folder and execute; wait for “patched ok”. 3. Launch Sequent.exe; status bar should show “dongle-free mode”. "Follow the instructions exactly, it will work" [Elektroda, partyza, post #4843123]

What statistic shows the payoff for buying the official key?

Dropping LPG overuse from 35 % to 10 % saves roughly 2.5 L per 100 km. At €0.60/L, the €100 key pays for itself in about 6 000 km—less than three average 48 L tank refills.
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