Collection: Builds, Tuning Packages & Tunes
FJ Motorwerkes – Performance Tuning You Can Trust
At FJ Motorwerkes, we specialise in BMW tuning and performance packages built through years of real-world experience, obsessive data refinement, and a drive to deliver results, not excuses.
We’re a small, independent operation, but we punch far above our weight. Whether it’s breaking records on the street, setting times on the strip, or featuring on YouTube’s biggest automotive platforms, our work consistently proves itself where it counts: in the real world.
Tested by Us. Proven by Results.
Every package we sell is tested first on our own cars. From turbo upgrades to ECU calibration, we run it hard before offering it to you. No dyno queens. No one-hit wonders. We chase consistent, usable performance that works every single time — on the road, not just on paper.
Our Proven Track Records;
- Fastest BMW X3M in the UK (2021 - 2023)
- Fastest Stage 1 only BMW M5 F90 in the UK (2020) Verified 10.4s ¼ mile
- Fastest Porsche 992 Carrera S in the UK Verified 5.85s 100–200 Dragy
- Winning multiple trophies across UK drag events
- Featured on AutoTopNL, Living Life Fast, and Officially Gassed
Unlike others who’ve been exposed or fall short when the cameras roll, we’ve kept a clean sheet — because we don’t cut corners. Whether it takes 3 logs or 45, we’ll get it perfect. Our name is attached — and that means everything.
See Our Builds in Action – Click the Links Below:
- 🔥 X3M vs Lambo – Drag & Rolls Officially Gassed Watch here
- 🏁 Porsche 911 992 C2S, Turbo S Killer – AutoTopNL Feature Watch here
- 🚀 X3M Autobahn – AutoTopNL Watch here
Thanks to our deep network and industry knowledge, we can offer tailored solutions for any budget, from flash tunes to full builds, always tested, always refined, and always performance-focused.
Why Choose FJ Motorwerkes?
- Real performance > Dyno glory
- Every setup tested on our own vehicles
- Record-setting times across BMW and Porsche platforms
- Trusted & proven on the biggest YouTube tuning channels
- Obsessive with detail. Ruthless with quality. No shortcuts.
- We don’t chase clout, we chase consistency.
What We Offer:
- Custom ECU tuning (Stage 1 to fully bespoke)
- Gearbox tuning (XHP + custom calibrations)
- Turbo upgrades (hybrid and big power setups)
- Intake, exhaust, fueling, and support packages
- Straight-talking, data-led performance consultation
- Real-world support and logging
Ready to unlock serious performance with a team that lives it?
Click the links above, see for yourself, then get in touch.
FJ Motorwerkes – No BS. Just Speed.
➡️ Check out @fjmotorwerkes on Instagram
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Bmw M3 M4 G80 G81 G82 G83 S58 Built Engine Service (Entry level) – 1000HP Ready
Regular price £7,100.00 GBPRegular priceUnit price / per -
Bmw M3 G80 G81 M4 G82 G83 FJM850 – Stage 3 Pump Fuel Package (Add On Options)
Regular price From £9,299.00 GBPRegular priceUnit price / per -
Porsche 911 (992) Carrera S / Targa S FJM600 Full Performance Package – Stage 2 ECU & Gearbox Tune + Inc Hardware
Regular price £2,649.00 GBPRegular priceUnit price / per -
Bmw X3M X4M F97 F98 - Full Stage 2 package FJM700 - Custom Tuned
Regular price From £3,249.00 GBPRegular priceUnit price / per -
BMW X5M F95 / X6M F96 FJM800 Stage 2 Performance Package – Supplied, Fitted & Custom Tuned
Regular price From £5,795.00 GBPRegular priceUnit price / per -
Bmw M3 G80 G81 M4 G82 G83 M2 G87 - Full Stage 2 package FJM700 - Custom Tuned
Regular price From £4,149.00 GBPRegular priceUnit price / per -
Bmw X3M X4M F97 F98 - Full Stage 2 package FJM670 - BM3 OTS MAP
Regular price From £2,849.00 GBPRegular priceUnit price / per -
Bmw X3M X4M S58 Built Engine Service (Entry level) – 1000HP Ready
Regular price £7,400.00 GBPRegular priceUnit price / per -
BMW M2 G87 OE CS Software Power Upgrade 70bhp - No Unlock Required
Regular price From £399.00 GBPRegular priceUnit price / per -
Bmw M3 G80 G81 M4 G82 G83 M2 G87 - Stage 1 package FJM620 - BM3 OTS STAGE 1
Regular price From £2,299.00 GBPRegular priceUnit price / per -
BMW M3 G80 G81 M4 G82 G83 OE CS Software Power Upgrade 70bhp - No Unlock Required
Regular price From £399.00 GBPRegular priceUnit price / per -
Bmw M3 G80 G81 M4 G82 G83 M2 G87 - Full Stage 2 package FJM680 - BootMod3 OTS MAP
Regular price From £3,749.00 GBPRegular priceUnit price / per -
BMW M3 F80 / M4 F82 F83 – Stage 2 Performance Package Custom ECU & Gearbox Tune with Hardware Upgrades 530–550bhp)
Regular price £2,300.00 GBPRegular priceUnit price / per -
Bmw M3 G80 G81 M4 G82 G83 M2 G87 - Stage 1 package FJM650 - STAGE 1 Custom Tuned
Regular price From £2,579.00 GBPRegular priceUnit price / per -
BMW M5 F90 (2018–2020) Pre Lci FJM800 Performance Package Stage 2 ECU & Gearbox Tune - Custom Tune
Regular price £2,649.00 GBPRegular priceUnit price / per -
Bmw M3 M4 G80 G81 G82 G83 S58 Built Engine Service – 1200HP+ Ready
Regular price £15,999.00 GBPRegular priceUnit price / per -
Bmw X3M X4M F97 F98 - Full Stage 1 package FJM650/620 - Custom Tuned or Bootmod3 OTS Stage 1
Regular price From £999.00 GBPRegular priceUnit price / per -
BMW M5 F90 (2018–2024) FJM620 Performance Package Stage 1 ECU & Gearbox Tune – Bootmod3 OTS
Regular price From £1,299.00 GBPRegular priceUnit price / per -
BMW X5M F95 / X6M F96 FJM750 Stage 2 Performance Package – Supplied, Fitted & OTS MAP
Regular price From £5,049.00 GBPRegular priceUnit price / per -
BMW M5 F90 (2020-2024) LCI FJM800 Performance Package Stage 2 ECU & Gearbox Tune - Custom Tune
Regular price £3,799.00 GBPRegular priceUnit price / per