JA Custom Tuning

21/07/2026

VW T-Roc 1.5t MG1cs011 in for pops & crackles and soft limiter removal. It was previously mapped so we had to bench it to preserve his previous map and add the pops crackles and rev limiter delete on top of it. Not many tuners can remove the soft limiters on these, took me a lot of time and investigation on winols when I first did one of these long time go ago.

About time to get yours booked in ?

Based in Rainham RM13 8UA

5% follower discount for limited time - Ts & Cs apply

✔️ WE OFFER VARIOUS AUTOMOTIVE SERVICES, PLEASE SCROLL THROUGH OUR PAGE FOR TONNES OF EXAMPLES

✔️ LIVE/CUSTOM FULLY BESPOKE DYNO TUNING WITH MASTER TOOLS, IN HOUSE FILE WRITER, SOFTWARE TUNING ON THE SPOT ACCORDING TO ENGINE’S RESPONSE AND OWNER’S DRIVING STYLE - Stage 1 FROM £199.99

✔️ WE’RE ONE OF THE VERY FEW COMPANIES IN UK THAT DEVELOP FILES IN HOUSE AND SUPPLY FILES TO OTHER REMAPPERS WORLDWIDE. WE’RE A SOFTWARE TUNING FACTORY. EVC WINOLS LICENSE NUMBER: 22549

✔️ Check your vehicles gains: https://jacustomtuning.co.uk/gains%2Fquote

✔️ HUNDREDS OF FEEDBACKS

✔️ CUSTOM EXHAUSTS - RES, BACK-BOX DELETES, DUAL EXHAUST, QUAD EXHAUST, DECAT, DPF GUTTING ETC

✔️ REMAPPING DEALERS WORLDWIDE

✔️ GEARBOX TUNING BMW & VAG FROM £199.99 & XHP FROM £279.99

✔️ DYNO RUNS

✔️ ADD ONS - DPF EGR ADBLUE (£249.99) DECAT NOX FAULT CODES. POPS AND BANGS, FLAMES, HARDCUT, SPEED LIMITER, REV LIMITER FROM £149.99 OR £49.99 EXTRA ( off road use only )

✔️ VAG med9 med17 simos18 launch control, rally launch, multi maps etcs

✔️ MILEAGE CORRECTIONS, MILEAGE BLOCKERS - CHANGE MILEAGE ON CLUSTER. ALL MAKES

✔️ ECU TCU CLONING

✔️ KEY PROGRAMMING

✔️ SMOKE TEST DIAGNOSTICS, ENGINE CARBON CLEAN, VEHICLE INSPECTION £50 EACH

✔️ MECHANICAL WORKS: vehicles servicing, brakes, Diagnostics, body kits etc

✔️ ELECTRICAL WORKS - F1 lights, Dashcams, immobiliser, trackers, wirings etc

✔️ Can phantom immobilizer ( pin input on cars )

✔️ BMW - key programming, cluster upgrade, mileage, cloning, red dot fix, Virginising.

✔️ CODING: BMW & VAG Group- Unlock features. CAR PLAY BMW MERCS VAG

✔️ FILE SERVICE - START YO

19/07/2026

Lexus Is250 2.5 v6 with denso Ecu in for some pops & crackles. We just did one few days before this one and done loads more in the past. We develop bespoke softwares in house on the spot to make all sorts of cars pop & crackle

About time to make your car sound wild ? Give us a shout we specialise in bespoke Ecu software developing and supplying worldwide. We also specialise in building custom exhaust in house

Based in Rainham RM13 8UA

5% follower discount for limited time - Ts & Cs apply

✔️ WE OFFER VARIOUS AUTOMOTIVE SERVICES, PLEASE SCROLL THROUGH OUR PAGE FOR TONNES OF EXAMPLES

✔️ LIVE/CUSTOM FULLY BESPOKE DYNO TUNING WITH MASTER TOOLS, IN HOUSE FILE WRITER, SOFTWARE TUNING ON THE SPOT ACCORDING TO ENGINE’S RESPONSE AND OWNER’S DRIVING STYLE - Stage 1 FROM £199.99

✔️ WE’RE ONE OF THE VERY FEW COMPANIES IN UK THAT DEVELOP FILES IN HOUSE AND SUPPLY FILES TO OTHER REMAPPERS WORLDWIDE. WE’RE A SOFTWARE TUNING FACTORY. EVC WINOLS LICENSE NUMBER: 22549

✔️ Check your vehicles gains: https://jacustomtuning.co.uk/gains%2Fquote

✔️ HUNDREDS OF FEEDBACKS

✔️ CUSTOM EXHAUSTS - RES, BACK-BOX DELETES, DUAL EXHAUST, QUAD EXHAUST, DECAT, DPF GUTTING ETC

✔️ REMAPPING DEALERS WORLDWIDE

✔️ GEARBOX TUNING BMW & VAG FROM £199.99 & XHP FROM £279.99

✔️ DYNO RUNS

✔️ ADD ONS - DPF EGR ADBLUE (£249.99) DECAT NOX FAULT CODES. POPS AND BANGS, FLAMES, HARDCUT, SPEED LIMITER, REV LIMITER FROM £149.99 OR £49.99 EXTRA ( off road use only )

✔️ VAG med9 med17 simos18 launch control, rally launch, multi maps etcs

✔️ MILEAGE CORRECTIONS, MILEAGE BLOCKERS - CHANGE MILEAGE ON CLUSTER. ALL MAKES

✔️ ECU TCU CLONING

✔️ KEY PROGRAMMING

✔️ SMOKE TEST DIAGNOSTICS, ENGINE CARBON CLEAN, VEHICLE INSPECTION £50 EACH

✔️ MECHANICAL WORKS: vehicles servicing, brakes, Diagnostics, body kits etc

✔️ ELECTRICAL WORKS - F1 lights, Dashcams, immobiliser, trackers, wirings etc

✔️ Can phantom immobilizer ( pin input on cars )

✔️ BMW - key programming, cluster upgrade, mileage, cloning, red dot fix, Virginising.

✔️ CODING: BMW & VAG Group- Unlock features. CAR PLAY BMW MERCS VAG

✔️ FILE SERVI

19/07/2026

BMW m240i in for:
✅ oil change
✅ brake fluid change
✅ res delete.

All three different services carried out on one ramp.

5% follower discount for limited time - Ts & Cs apply

✔️ WE OFFER VARIOUS AUTOMOTIVE SERVICES, PLEASE SCROLL THROUGH OUR PAGE FOR TONNES OF EXAMPLES

✔️ LIVE/CUSTOM FULLY BESPOKE DYNO TUNING WITH MASTER TOOLS, IN HOUSE FILE WRITER, SOFTWARE TUNING ON THE SPOT ACCORDING TO ENGINE’S RESPONSE AND OWNER’S DRIVING STYLE - Stage 1 FROM £199.99

✔️ WE’RE ONE OF THE VERY FEW COMPANIES IN UK THAT DEVELOP FILES IN HOUSE AND SUPPLY FILES TO OTHER REMAPPERS WORLDWIDE. WE’RE A SOFTWARE TUNING FACTORY. EVC WINOLS LICENSE NUMBER: 22549

✔️ Check your vehicles gains: https://jacustomtuning.co.uk/gains%2Fquote

✔️ HUNDREDS OF FEEDBACKS

✔️ CUSTOM EXHAUSTS - RES, BACK-BOX DELETES, DUAL EXHAUST, QUAD EXHAUST, DECAT, DPF GUTTING ETC

✔️ REMAPPING DEALERS WORLDWIDE

✔️ GEARBOX TUNING BMW & VAG FROM £199.99 & XHP FROM £279.99

✔️ DYNO RUNS

✔️ ADD ONS - DPF EGR ADBLUE (£249.99) DECAT NOX FAULT CODES. POPS AND BANGS, FLAMES, HARDCUT, SPEED LIMITER, REV LIMITER FROM £149.99 OR £49.99 EXTRA ( off road use only )

✔️ VAG med9 med17 simos18 launch control, rally launch, multi maps etcs

✔️ MILEAGE CORRECTIONS, MILEAGE BLOCKERS - CHANGE MILEAGE ON CLUSTER. ALL MAKES

✔️ ECU TCU CLONING

✔️ KEY PROGRAMMING

✔️ SMOKE TEST DIAGNOSTICS, ENGINE CARBON CLEAN, VEHICLE INSPECTION £50 EACH

✔️ MECHANICAL WORKS: vehicles servicing, brakes, Diagnostics, body kits etc

✔️ ELECTRICAL WORKS - F1 lights, Dashcams, immobiliser, trackers, wirings etc

✔️ Can phantom immobilizer ( pin input on cars )

✔️ BMW - key programming, cluster upgrade, mileage, cloning, red dot fix, Virginising.

✔️ CODING: BMW & VAG Group- Unlock features. CAR PLAY BMW MERCS VAG

✔️ FILE SERVICE - START YOUR OWN REMAPPING BUSINESS

✔️ EVC WINOLS RESELLER

Ts & Cs Apply

www.jacustomtuning.co.uk

17/07/2026

2006 Merc CLS 350 3.5L v6 268hp ME9, in for double backbox delete with quad AMG tips. Previously had double res delete, now it’s got double backbox delete sounds absolutely insane v6 NA just ripping accross the rpm. Owner also wanted some light pops & crackles. As you know we make all sorts of cars pop & crackle, we develop the softwares in house on the spot as well supplying them worldwide.

About time to transform your car ?

Based in Rainham RM13 8UA

5% follower discount for limited time - Ts & Cs apply

✔️ WE OFFER VARIOUS AUTOMOTIVE SERVICES, PLEASE SCROLL THROUGH OUR PAGE FOR TONNES OF EXAMPLES

✔️ LIVE/CUSTOM FULLY BESPOKE DYNO TUNING WITH MASTER TOOLS, IN HOUSE FILE WRITER, SOFTWARE TUNING ON THE SPOT ACCORDING TO ENGINE’S RESPONSE AND OWNER’S DRIVING STYLE - Stage 1 FROM £199.99

✔️ WE’RE ONE OF THE VERY FEW COMPANIES IN UK THAT DEVELOP FILES IN HOUSE AND SUPPLY FILES TO OTHER REMAPPERS WORLDWIDE. WE’RE A SOFTWARE TUNING FACTORY. EVC WINOLS LICENSE NUMBER: 22549

✔️ Check your vehicles gains: https://jacustomtuning.co.uk/gains%2Fquote

✔️ HUNDREDS OF FEEDBACKS

✔️ CUSTOM EXHAUSTS - RES, BACK-BOX DELETES, DUAL EXHAUST, QUAD EXHAUST, DECAT, DPF GUTTING ETC

✔️ REMAPPING DEALERS WORLDWIDE

✔️ GEARBOX TUNING BMW & VAG FROM £199.99 & XHP FROM £279.99

✔️ DYNO RUNS

✔️ ADD ONS - DPF EGR ADBLUE (£249.99) DECAT NOX FAULT CODES. POPS AND BANGS, FLAMES, HARDCUT, SPEED LIMITER, REV LIMITER FROM £149.99 OR £49.99 EXTRA ( off road use only )

✔️ VAG med9 med17 simos18 launch control, rally launch, multi maps etcs

✔️ MILEAGE CORRECTIONS, MILEAGE BLOCKERS - CHANGE MILEAGE ON CLUSTER. ALL MAKES

✔️ ECU TCU CLONING

✔️ KEY PROGRAMMING

✔️ SMOKE TEST DIAGNOSTICS, ENGINE CARBON CLEAN, VEHICLE INSPECTION £50 EACH

✔️ MECHANICAL WORKS: vehicles servicing, brakes, Diagnostics, body kits etc

✔️ ELECTRICAL WORKS - F1 lights, Dashcams, immobiliser, trackers, wirings etc

✔️ Can phantom immobilizer ( pin input on cars )

✔️ BMW - key programming, cluster upgrade, mileage, cloning, red dot fix, Virginising.

✔️ CODING: BMW & VAG Group- Unlock features. CAR PLAY BMW MERCS VAG

16/07/2026

Another f20 n13 transformed ✅✅✅

Rear end looks ✅
Exhaust sound ✅
Engine performance ✅

About time to transform your car ? Give us a shout

Based in Rainham RM13 8UA

5% follower discount for limited time - Ts & Cs apply

✔️ WE OFFER VARIOUS AUTOMOTIVE SERVICES, PLEASE SCROLL THROUGH OUR PAGE FOR TONNES OF EXAMPLES

✔️ LIVE/CUSTOM FULLY BESPOKE DYNO TUNING WITH MASTER TOOLS, IN HOUSE FILE WRITER, SOFTWARE TUNING ON THE SPOT ACCORDING TO ENGINE’S RESPONSE AND OWNER’S DRIVING STYLE - Stage 1 FROM £199.99

✔️ WE’RE ONE OF THE VERY FEW COMPANIES IN UK THAT DEVELOP FILES IN HOUSE AND SUPPLY FILES TO OTHER REMAPPERS WORLDWIDE. WE’RE A SOFTWARE TUNING FACTORY. EVC WINOLS LICENSE NUMBER: 22549

✔️ Check your vehicles gains: https://jacustomtuning.co.uk/gains%2Fquote

✔️ HUNDREDS OF FEEDBACKS

✔️ CUSTOM EXHAUSTS - RES, BACK-BOX DELETES, DUAL EXHAUST, QUAD EXHAUST, DECAT, DPF GUTTING ETC

✔️ REMAPPING DEALERS WORLDWIDE

✔️ GEARBOX TUNING BMW & VAG FROM £199.99 & XHP FROM £279.99

✔️ DYNO RUNS

✔️ ADD ONS - DPF EGR ADBLUE (£249.99) DECAT NOX FAULT CODES. POPS AND BANGS, FLAMES, HARDCUT, SPEED LIMITER, REV LIMITER FROM £149.99 OR £49.99 EXTRA ( off road use only )

✔️ VAG med9 med17 simos18 launch control, rally launch, multi maps etcs

✔️ MILEAGE CORRECTIONS, MILEAGE BLOCKERS - CHANGE MILEAGE ON CLUSTER. ALL MAKES

✔️ ECU TCU CLONING

✔️ KEY PROGRAMMING

✔️ SMOKE TEST DIAGNOSTICS, ENGINE CARBON CLEAN, VEHICLE INSPECTION £50 EACH

✔️ MECHANICAL WORKS: vehicles servicing, brakes, Diagnostics, body kits etc

✔️ ELECTRICAL WORKS - F1 lights, Dashcams, immobiliser, trackers, wirings etc

✔️ Can phantom immobilizer ( pin input on cars )

✔️ BMW - key programming, cluster upgrade, mileage, cloning, red dot fix, Virginising.

✔️ CODING: BMW & VAG Group- Unlock features. CAR PLAY BMW MERCS VAG

✔️ FILE SERVICE - START YOUR OWN REMAPPING BUSINESS

✔️ EVC WINOLS RESELLER

Ts & Cs Apply

www.jacustomtuning.co.uk

14/07/2026

We had this beautiful Mustang 2.3t in for pops & crackles. Car is decat so it even flames sometimes.

We make all sorts of cars pop and crackle

Based in Rainham RM13 8UA

5% follower discount for limited time - Ts & Cs apply

✔️ WE OFFER VARIOUS AUTOMOTIVE SERVICES, PLEASE SCROLL THROUGH OUR PAGE FOR TONNES OF EXAMPLES

✔️ LIVE/CUSTOM FULLY BESPOKE DYNO TUNING WITH MASTER TOOLS, IN HOUSE FILE WRITER, SOFTWARE TUNING ON THE SPOT ACCORDING TO ENGINE’S RESPONSE AND OWNER’S DRIVING STYLE - Stage 1 FROM £199.99

✔️ WE’RE ONE OF THE VERY FEW COMPANIES IN UK THAT DEVELOP FILES IN HOUSE AND SUPPLY FILES TO OTHER REMAPPERS WORLDWIDE. WE’RE A SOFTWARE TUNING FACTORY. EVC WINOLS LICENSE NUMBER: 22549

✔️ Check your vehicles gains: https://jacustomtuning.co.uk/gains%2Fquote

✔️ HUNDREDS OF FEEDBACKS

✔️ CUSTOM EXHAUSTS - RES, BACK-BOX DELETES, DUAL EXHAUST, QUAD EXHAUST, DECAT, DPF GUTTING ETC

✔️ REMAPPING DEALERS WORLDWIDE

✔️ GEARBOX TUNING BMW & VAG FROM £199.99 & XHP FROM £279.99

✔️ DYNO RUNS

✔️ ADD ONS - DPF EGR ADBLUE (£249.99) DECAT NOX FAULT CODES. POPS AND BANGS, FLAMES, HARDCUT, SPEED LIMITER, REV LIMITER FROM £149.99 OR £49.99 EXTRA ( off road use only )

✔️ VAG med9 med17 simos18 launch control, rally launch, multi maps etcs

✔️ MILEAGE CORRECTIONS, MILEAGE BLOCKERS - CHANGE MILEAGE ON CLUSTER. ALL MAKES

✔️ ECU TCU CLONING

✔️ KEY PROGRAMMING

✔️ SMOKE TEST DIAGNOSTICS, ENGINE CARBON CLEAN, VEHICLE INSPECTION £50 EACH

✔️ MECHANICAL WORKS: vehicles servicing, brakes, Diagnostics, body kits etc

✔️ ELECTRICAL WORKS - F1 lights, Dashcams, immobiliser, trackers, wirings etc

✔️ Can phantom immobilizer ( pin input on cars )

✔️ BMW - key programming, cluster upgrade, mileage, cloning, red dot fix, Virginising.

✔️ CODING: BMW & VAG Group- Unlock features. CAR PLAY BMW MERCS VAG

✔️ FILE SERVICE - START YOUR OWN REMAPPING BUSINESS

✔️ EVC WINOLS RESELLER

Ts & Cs Apply

www.jacustomtuning.co.uk

10/07/2026

BMW f10 520d 181hp with Bosch edc17c50 Ecu in for stage 1 bespoke performance tune with hardcut limiter and rev limiter removal.

we also done a mid box delete and fixed his downpipe connection to the exhaust which was dodgy and leaking badly, we cut it off put a sleeve and welded it up to sort that issue.

This previously had backbox deleted and downpipe fitted. Now this is fully straight through. Sounds mental with the hardcut 😮‍💨

Based in Rainham RM13 8UA

5% follower discount for limited time - Ts & Cs apply

✔️ WE OFFER VARIOUS AUTOMOTIVE SERVICES, PLEASE SCROLL THROUGH OUR PAGE FOR TONNES OF EXAMPLES

✔️ LIVE/CUSTOM FULLY BESPOKE DYNO TUNING WITH MASTER TOOLS, IN HOUSE FILE WRITER, SOFTWARE TUNING ON THE SPOT ACCORDING TO ENGINE’S RESPONSE AND OWNER’S DRIVING STYLE - Stage 1 FROM £199.99

✔️ WE’RE ONE OF THE VERY FEW COMPANIES IN UK THAT DEVELOP FILES IN HOUSE AND SUPPLY FILES TO OTHER REMAPPERS WORLDWIDE. WE’RE A SOFTWARE TUNING FACTORY. EVC WINOLS LICENSE NUMBER: 22549

✔️ Check your vehicles gains: https://jacustomtuning.co.uk/gains%2Fquote

✔️ HUNDREDS OF FEEDBACKS

✔️ CUSTOM EXHAUSTS - RES, BACK-BOX DELETES, DUAL EXHAUST, QUAD EXHAUST, DECAT, DPF GUTTING ETC

✔️ REMAPPING DEALERS WORLDWIDE

✔️ GEARBOX TUNING BMW & VAG FROM £199.99 & XHP FROM £279.99

✔️ DYNO RUNS

✔️ ADD ONS - DPF EGR ADBLUE (£249.99) DECAT NOX FAULT CODES. POPS AND BANGS, FLAMES, HARDCUT, SPEED LIMITER, REV LIMITER FROM £149.99 OR £49.99 EXTRA ( off road use only )

✔️ VAG med9 med17 simos18 launch control, rally launch, multi maps etcs

✔️ MILEAGE CORRECTIONS, MILEAGE BLOCKERS - CHANGE MILEAGE ON CLUSTER. ALL MAKES

✔️ ECU TCU CLONING

✔️ KEY PROGRAMMING

✔️ SMOKE TEST DIAGNOSTICS, ENGINE CARBON CLEAN, VEHICLE INSPECTION £50 EACH

✔️ MECHANICAL WORKS: vehicles servicing, brakes, Diagnostics, body kits etc

✔️ ELECTRICAL WORKS - F1 lights, Dashcams, immobiliser, trackers, wirings etc

✔️ Can phantom immobilizer ( pin input on cars )

✔️ BMW - key programming, cluster upgrade, mileage, cloning, red dot fix, Virginising.

✔️ CODING: BMW & VAG Group- Unlock features. CAR PLAY BMW

08/07/2026

Another mk6 golf 1.4tsi in for one of the best mods 👌🏼 backbox & res delete with pops & crackles transforming the exhaust sound completely

✔️ WE OFFER VARIOUS AUTOMOTIVE SERVICES, PLEASE SCROLL THROUGH OUR PAGE FOR TONNES OF EXAMPLES

✔️ LIVE/CUSTOM FULLY BESPOKE DYNO TUNING WITH MASTER TOOLS, IN HOUSE FILE WRITER, SOFTWARE TUNING ON THE SPOT ACCORDING TO ENGINE’S RESPONSE AND OWNER’S DRIVING STYLE - Stage 1 FROM £199.99

✔️ WE’RE ONE OF THE VERY FEW COMPANIES IN UK THAT DEVELOP FILES IN HOUSE AND SUPPLY FILES TO OTHER REMAPPERS WORLDWIDE. WE’RE A SOFTWARE TUNING FACTORY. EVC WINOLS LICENSE NUMBER: 22549

✔️ Check your vehicles gains: https://jacustomtuning.co.uk/gains%2Fquote

✔️ HUNDREDS OF FEEDBACKS

✔️ CUSTOM EXHAUSTS - RES, BACK-BOX DELETES, DUAL EXHAUST, QUAD EXHAUST, DECAT, DPF GUTTING ETC

✔️ REMAPPING DEALERS WORLDWIDE

✔️ GEARBOX TUNING BMW & VAG FROM £199.99 & XHP FROM £279.99

✔️ DYNO RUNS

✔️ ADD ONS - DPF EGR ADBLUE (£249.99) DECAT NOX FAULT CODES. POPS AND BANGS, FLAMES, HARDCUT, SPEED LIMITER, REV LIMITER FROM £149.99 OR £49.99 EXTRA ( off road use only )

✔️ VAG med9 med17 simos18 launch control, rally launch, multi maps etcs

✔️ MILEAGE CORRECTIONS, MILEAGE BLOCKERS - CHANGE MILEAGE ON CLUSTER. ALL MAKES

✔️ ECU TCU CLONING

✔️ KEY PROGRAMMING

✔️ SMOKE TEST DIAGNOSTICS, ENGINE CARBON CLEAN, VEHICLE INSPECTION £50 EACH

✔️ MECHANICAL WORKS: vehicles servicing, brakes, Diagnostics, body kits etc

✔️ ELECTRICAL WORKS - F1 lights, Dashcams, immobiliser, trackers, wirings etc

✔️ Can phantom immobilizer ( pin input on cars )

✔️ BMW - key programming, cluster upgrade, mileage, cloning, red dot fix, Virginising.

✔️ CODING: BMW & VAG Group- Unlock features. CAR PLAY BMW MERCS VAG

✔️ FILE SERVICE - START YOUR OWN REMAPPING BUSINESS

✔️ EVC WINOLS RESELLER

Ts & Cs Apply

www.jacustomtuning.co.uk

07/07/2026

Special reopening offer £50 off on all tuning services. Book now ! ( Must quote JACT50 to claim this discount )

New location: Unit 3&4 Blackwater Close, Rainham, RM13 8UA - JA CUSTOM TUNING on google maps ( 5 mins from old unit )

We are currently active and taking bookings, however we are very busy with everything, there might be some delays in response. Thank you for your patience while we were closed.

04/06/2026