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New Look, Same Great Results Along with our brand new website, we’ve made some changes to the way we look – here’s what the BAET to Border... NewsRebrand Placing An Order How to place an order with Border Tuning — find your vehicle, add to cart, check out — plus the next steps... Customer Support How to Manually Read Injector Codes – Nissan Navara D22 YD25 A step-by-step guide to manually reading the injector codes on a Nissan Navara D22 YD25 — what the codes are, why they... D22 YD25GuidesNavaraNissan What are MAF and MAP Sensors? MAF and MAP sensors both help the ECU work out how much fuel to inject, but they measure different things. Here's how... Dyno TuningMail Order TuningTuning Throttle Controllers – What They Are and What They Really Do Throttle controllers change how the accelerator pedal feels, not what the engine produces. Here's what they actually do, what they don't, and... Dyno TuningMail Order TuningTuning What is ECU Remapping and How Does It Compare to Other Methods? ECU remapping is just one of several ways to improve performance. Here's what it actually is, how it differs from piggyback chips... Dyno TuningMail Order TuningTuning Injector Upgrade Guide – Nissan Navara D22 YD25 When the factory YD25 injectors run out of headroom, high-flow or D40 (+30%) injectors are the next step. Here's when you need... D22 YD25NavaraNissanPart Upgrades Exhaust Upgrade Guide – Nissan Navara D22 YD25 A 3″ turbo-back exhaust is the go-to upgrade for the D22 YD25 — less post-turbine restriction, lower EGTs, better response. Keep a... D22 YD25NavaraNissanPart Upgrades Airbox Upgrade Guide – Nissan Navara D22 YD25 The factory YD25 airbox gets restrictive once tuned. Aftermarket boxes improve airflow, sealing and snorkel integration — and on dual-battery Navaras, running... D22 YD25NavaraNissanPart Upgrades Intercooler Upgrade Guide – Nissan Navara D22 YD25 On the D22 YD25, the factory intercooler suits mild tuning. Welded replacements mainly help durability, while a front-mount intercooler gives the best... D22 YD25NavaraNissanPart Upgrades Turbo Upgrade Guide – Nissan Navara D22 YD25 The D22 YD25 runs a factory wastegated turbo. Bolt-on high-flow options suit mild builds, but converting to a D40 standard-output VNT turbo... D22 YD25NavaraNissanPart Upgrades Injector Upgrade Guide – Nissan Navara D22 ZD30DI Factory ZD30DI injectors limit power beyond basic tuning. High-flow injectors (+30/50/100%) are needed for bigger turbo setups — sized to your goals,... D22 ZD30DINavaraNissanPart Upgrades Exhaust Upgrade Guide – Nissan Navara D22 ZD30DI A 3″ turbo-back exhaust is the typical upgrade for a tuned ZD30DI D22 Navara — lower restriction and EGTs, better spool. Keep... D22 ZD30DINavaraNissanPart Upgrades Airbox Upgrade Guide – Nissan Navara D22 ZD30DI The D22 ZD30DI's factory airbox is restrictive and poorly sealed, so it responds well to an upgrade — better throttle response, airflow... D22 ZD30DINavaraNissanPart Upgrades Intercooler Upgrade Guide – Nissan Navara D22 ZD30DI The D22 ZD30DI isn't intercooled from factory, so high intake temps hurt sustained performance. Even a basic intercooler helps — Patrol top-mount... D22 ZD30DINavaraNissanPart Upgrades Turbo Upgrade Guide – Nissan Navara D22 ZD30DI The D22 ZD30DI runs a factory wastegated turbo. Bolt-on high-flow units suit moderate builds, but converting to a Patrol ZD30DI VNT turbo... D22 ZD30DINavaraNissanPart Upgrades Why the ‘Grenade’ Reputation? – Nissan Navara D22 ZD30DI The ZD30 “grenade” reputation comes mainly from early GU Patrol ZD30DI models — not the D22 Navara, whose wastegated turbo, simpler ECU,... D22 ZD30DINavaraNissan Injector Upgrade Guide – Nissan Patrol GU ZD30CRD The ZD30CRD's common-rail fuel system has far more headroom than the DI — good for ~140–150rwkW on stock injectors (don't block the... GU ZD30CRDNissanPart UpgradesPatrol Exhaust Upgrade Guide – Nissan Patrol GU ZD30CRD A 3″ turbo-back exhaust is the go-to upgrade for the ZD30CRD GU Patrol — lower restriction and EGTs, better spool. Keep a... GU ZD30CRDNissanPart UpgradesPatrol Airbox Upgrade Guide – Nissan Patrol GU ZD30CRD On the ZD30CRD the airbox is a minor gain until airflow demand is high. Watch the factory MAF-to-turbo pipe, avoid “dusting” boxes,... GU ZD30CRDNissanPart UpgradesPatrol Intercooler Upgrade Guide – Nissan Patrol GU ZD30CRD The ZD30CRD's factory top-mount intercooler maxes out around the same point as the factory turbo (~20 PSI). Welded units add durability; a... GU ZD30CRDNissanPart UpgradesPatrol Turbo Upgrade Guide – Nissan Patrol GU ZD30CRD The ZD30CRD's factory VNT turbo is good to ~20 PSI and more capable than most expect. High-flow VNTs are incremental; true gains... GU ZD30CRDNissanPart UpgradesPatrol Injector Codes – Nissan Patrol GU ZD30CRD On the common-rail ZD30CRD, each injector carries a unique code that tells the ECU its exact flow characteristics. Correct coding is essential... GU ZD30CRDNissanPatrol About the ZD30DI Engine – Nissan GU Patrol An overview of the first-generation ZD30DI in the Nissan GU Patrol — its direct-injection design, mixed early reputation, how it differs from... GU ZD30DINissanPatrol Can Dyno Tuning Improve Fuel Economy? Dyno tuning can improve fuel economy — mostly through better low- and mid-range torque, so the engine works less for the same... Dyno TuningTuning When Should I Re-tune? A properly developed tune doesn't expire. Here's when a re-tune actually makes sense (hardware changes, new usage, faults), when it doesn't, and... Dyno TuningMail Order TuningTuning Can You Dyno Tune a Stock Car or Just Modified Vehicles? Stock vehicles can absolutely be dyno tuned — for drivability, torque and efficiency — while modified vehicles need it to safely realise... Dyno TuningTuning Is Dyno Tuning Safe for my Engine? Done correctly, dyno tuning is one of the safest ways to tune — real-time monitoring, controlled load, and early fault detection. Here's... Dyno TuningTuning Can Tuning Fix Drivability Issues? Rough Idle, Low Fuel Economy & More Rough idle, hesitation, poor economy, pinging — tuning can resolve these when they're calibration-related, but not when they're mechanical. Here's how to... Dyno TuningMail Order TuningTuning How Long Does a Dyno Tuning Session Take? Most dyno tuning sessions run 2–3 hours — setup, baseline runs, tuning under load, then verification. Here's what each stage involves and... Dyno TuningTuning Will I See More Gains from a Dyno Tune Compared to a Mail Order Tune? A dyno tune usually delivers higher gains than a mail-order tune — but the bigger advantage is live verification, which catches faults... Dyno TuningTuning What Size Tyres Can I Tune With? We can dyno tune any tyre size — the only real limit is track width (up to 2180mm). Larger tyres can lower... Dyno TuningTuning Injector Upgrade Guide – Nissan Patrol GU ZD30DI Factory ZD30DI injectors limit power beyond a basic tune. High-flow injectors (+30/50/100%) are needed for bigger turbo setups — sized to your... GU ZD30DINissanPart UpgradesPatrol Exhaust Upgrade Guide – Nissan Patrol GU ZD30DI A 3″ turbo-back exhaust is the go-to upgrade for the ZD30DI GU Patrol — lower restriction and EGTs, better spool. Keep a... GU ZD30DINissanPart UpgradesPatrol Airbox Upgrade Guide – Nissan Patrol GU ZD30DI On the ZD30DI the airbox is a minor gain until airflow demand is high. Watch the factory MAF-to-turbo pipe, avoid “dusting” boxes,... GU ZD30DINissanPart UpgradesPatrol Intercooler Upgrade Guide – Nissan Patrol GU ZD30DI The ZD30DI's factory top-mount intercooler maxes out around the same point as the factory turbo (~20 PSI). Welded units add durability; a... GU ZD30DINissanPart UpgradesPatrol Turbo Upgrade Guide – Nissan Patrol GU ZD30DI The ZD30DI's factory VNT turbo is good to ~20 PSI and more capable than most expect. High-flow VNTs are incremental; real gains... GU ZD30DINissanPart UpgradesPatrol Comparing Dyno Data Between Different Dynos Peak power figures from different dynos can't be compared fairly — correction factors, calibration and setup all vary. Here's what dyno data... Dyno TuningMail Order TuningTuning How a Mail Order Tune is Developed Our mail-order tunes start on the dyno, are built within safe limits across engine, turbo and drivetrain, and are validated on 10–15... Mail Order TuningTuning