The R32 Nissan Skyline GT-R is one of the most celebrated performance platforms in Japanese automotive history, underpinned by the legendary RB26DETT twin-turbocharged inline-six and the sophisticated ATTESA E-TS all-wheel-drive system. As a Group A homologation special, the R32 GT-R's engineering pedigree means it responds exceptionally well to thoughtful forced-induction upgrades — and that is exactly what this build capitalises on.
The owner's philosophy is rooted in maintaining the GT-R's renowned drivability while pushing power output to a meaningful 480whp. Rather than chasing peak numbers with large-frame turbos that blunt low-end response, the builder selected Tomei ARMS M7960 twin-scroll units specifically for their OEM-like spool characteristics — a deliberate, informed choice that keeps the car street-usable and engaging across the entire rev range.
At the heart of the build is a comprehensive RB26DETT refresh paired with a billet timing kit, ensuring the bottom end and valvetrain can sustain the increased cylinder pressures that come with running E85. The ethanol tune not only supports the 480whp target cleanly but also provides the charge-cooling and detonation-resistance benefits that make E85 a natural fit for a built RB26 operating at this power level.
The result is a GT-R that retains the crisp, linear power delivery the chassis is celebrated for, while delivering a substantial step beyond the factory 276ps rating. The combination of well-matched turbos, refreshed internals, and a proper fuel and calibration strategy gives this R32 the mechanical integrity to back up its numbers over the long term.
We went with the Tomei ARMS turbos for OEM-like response.
- —Achieve 480whp from the RB26DETT
- —Maintain OEM-like throttle response with upgraded turbos
- —Full engine refresh for long-term reliability
- —Run E85 for charge cooling and detonation resistance
- —Install billet timing kit to support increased power
Engine & Power
Provenest · reviewA full RB26DETT refresh combined with a billet timing kit forms the mechanical foundation of this 480whp build, ensuring the engine can sustain elevated boost and E85 combustion pressures reliably.
Parts
$6,500
Labour
$3,000
Total
$9,500
RB26DETT Full Engine Refresh
4.5 ★
Billet Timing Kit
4.6 ★
- Full refresh addresses all wear items before boosting power
- Billet timing kit eliminates stock timing gear fragility under high power
- Solid foundation for long-term reliability at 480whp
- Full engine refresh is labour-intensive and costly
- Billet components require precise installation
- Ensures consistent power delivery by eliminating worn tolerances
- Allows safe operation at 480whp without compromised internals
- Restores compression uniformity across all six cylinders
- Maintains accurate cam timing at all rpm, preserving power and reliability
- Prevents timing slip that can cause catastrophic engine damage at high power
- Smoother idle and cleaner power band post-refresh
- Improved throttle response from consistent compression
- No direct feel change but provides confidence in hard driving
- Consistent ignition timing contributes to smooth power delivery
- Dramatically reduces risk of engine failure at elevated power
- New seals and gaskets prevent oil and coolant leaks under heat cycling
- Factory tolerances restored means consistent long-term durability
- Billet construction resists heat and fatigue far better than OEM plastic
- Essential reliability upgrade on any serious RB26 build
- Eliminates one of the most common causes of RB26 catastrophic failure
- Requires full engine-out procedure
- Machine shop work needed for bore, hone, and surface checks
- Recommend OEM or upgraded head gasket at time of rebuild
- Best installed during a full engine refresh while timing cover is off
- Requires correct tensioner pre-load procedure
- Follow manufacturer torque specs precisely
- Often reveals hidden damage (cracked ringlands, scored bores) only visible during teardown
- Cost varies significantly by region and shop expertise
- RB26 blocks are robust but benefit from main stud upgrade at refresh
- OEM plastic guides can fail without warning on high-power engines
- Several reputable brands offer billet kits for the RB26
- Should be inspected at major service intervals
- vs keeping stock internals: stock internals are safe to ~400whp with care but refresh eliminates uncertainty
- vs stroker kit: refresh keeps displacement stock; stroker adds cost and complexity
- vs OEM replacement plastic: billet far superior in durability at high power
- vs doing nothing: OEM guides are a known failure point at sustained high rpm
- Pair with upgraded head studs (ARP) during refresh
- Replace all coolant and oil galley plugs while apart
- Pressure-test block and head before reassembly
- Install during engine rebuild to save labour cost
- Source from reputable RB26-specific supplier
- Pair with quality timing belt or chain service at same time
- Any R32 GT-R targeting over 350whp
- High-mileage examples with unknown service history
- Builds using E85 where detonation risk is elevated
- Any RB26 build over 400whp
- High-rpm track or street use
- Builds where engine longevity is a priority
Intake & Exhaust
Provenest · reviewTomei ARMS M7960 twin-scroll turbochargers replace the stock ceramic-wheeled units, delivering OEM-like response with significantly higher flow capacity to support 480whp on E85.
Parts
$5,500
Labour
$1,200
Total
$6,700
Tomei Powered
ARMS M7960 Twin-Scroll Turbochargers
4.7 ★
- Twin-scroll design improves spool time and low-end response vs single-scroll alternatives
- M7960 sizing is well-matched to 480whp target on the RB26
- Tomei ARMS units are a proven, well-supported upgrade for the RB26 platform
- Premium pricing compared to generic turbo kits
- Top-end flow ceiling exists compared to larger frame turbos
- Supports 480whp on E85 with appropriate fuelling and tune
- Faster spool than OEM ceramic-wheeled turbos due to twin-scroll design
- Improved mid-range torque delivery compared to stock
- OEM-like response preserved — no significant turbo lag penalty
- Linear power build makes the car approachable on the street
- Strong mid-range pull from twin-scroll efficiency
- Tomei ARMS line has a strong reliability reputation in the RB community
- Metal-wheeled compressor more durable than OEM ceramic units
- Suitable for sustained street and occasional track use at 480whp
- Bolt-on fitment to RB26 exhaust manifold — OEM flange compatible
- Recommend upgrading oil feed and drain lines at install
- Allow turbos to cool down (idle 2-3 min) after hard use
- OEM RB26 ceramic turbos are fragile and commonly the first upgrade on serious builds
- Twin-scroll requires proper exhaust manifold pairing for full benefit
- E85 tune must be calibrated specifically for the M7960 flow characteristics
- vs Garrett GTX turbos: Garrett offers more peak power ceiling but less OEM-like response
- vs HKS GT turbos: similar positioning, Tomei ARMS often preferred for street builds
- vs stock turbos: substantially higher flow with better durability
- Pair with appropriate front-mount intercooler upgrade to maximise E85 benefits
- Have a reputable RB26 tuner calibrate boost and fuel map specifically for M7960 flow
- Upgrade oil feed restrictor to correct spec to prevent over-oiling
- R32/R33/R34 GT-R owners targeting 400-550whp street/mild track use
- Builders prioritising response and drivability over outright peak power
- E85 builds where charge cooling allows more aggressive boost targets
Fuel & Cooling
Provenest · reviewAn E85 ethanol fuel setup with a supporting tune enables higher boost and better detonation resistance than pump gasoline, underpinning the 480whp target reliably.
Parts
$1,800
Labour
$800
Total
$2,600
E85 Ethanol Tune
4.4 ★
- E85 provides substantial charge cooling advantage over pump petrol
- Higher octane equivalent of E85 allows more aggressive ignition timing
- Lower combustion temperatures reduce knock risk on a built RB26
- E85 availability varies by region
- Increased fuel consumption compared to petrol
- Requires upgraded fuel system components to handle ethanol compatibility
- Directly enables 480whp target — petrol tune would yield less power at safe boost levels
- More aggressive ignition advance possible due to detonation resistance
- Cooler charge temperatures allow denser air-fuel mixture
- Power delivery is smooth and consistent — E85 combustion is clean
- No noticeable drivability penalty in normal street use
- Engine runs cooler under sustained load
- Lower combustion temperatures extend engine component life under high load
- Requires E85-compatible fuel system to avoid ethanol-induced corrosion
- Consistent fuel quality is important — E85 blend ratios vary seasonally
- Requires custom ECU calibration by an experienced RB26 tuner
- Fuel injectors must be sized and rated for E85
- High-flow fuel pump required to compensate for E85's lower energy density
- E85 blend varies by season and region — tune should account for this
- Cold-start can be harder in low temperatures on pure E85
- Flex-fuel sensor setup allows automatic adaptation between E85 and petrol
- vs 98 RON pump petrol: E85 yields more power and better detonation resistance
- vs methanol injection: E85 is a whole-system solution vs a supplemental system
- vs race fuel: E85 offers similar detonation resistance at a fraction of the cost
- Confirm E85 availability in your area before committing to a dedicated tune
- Upgrade injectors and fuel pump to E85-compatible units at same time as tune
- Log intake air temperatures during tuning to verify charge cooling benefit
- Builds targeting maximum power from a given turbo setup
- Regions with reliable E85 supply
- Builders prioritising power density and detonation safety margin
Engine & Power
2 partsA full RB26DETT refresh combined with a billet timing kit forms the mechanical foundation of this 480whp build, ensuring the engine can sustain elevated boost and E85 combustion pressures reliably.
RB26DETT Full Engine Refresh
Complete rebuild of the RB26DETT to prepare the engine for increased boost and E85 fuel on the upgraded turbo setup.
Why This Part
A full refresh is essential baseline practice before adding substantial power to a high-mileage Japanese performance engine.
- Restores all wear tolerances to factory spec
- Provides a clean slate for high-power tuning
- Reduces risk of catastrophic failure under increased boost
- Significant cost and downtime
- Quality depends heavily on the machine shop used
- Ensures consistent power delivery by eliminating worn tolerances
- Allows safe operation at 480whp without compromised internals
- Restores compression uniformity across all six cylinders
- Smoother idle and cleaner power band post-refresh
- Improved throttle response from consistent compression
- Dramatically reduces risk of engine failure at elevated power
- New seals and gaskets prevent oil and coolant leaks under heat cycling
- Factory tolerances restored means consistent long-term durability
- Requires full engine-out procedure
- Machine shop work needed for bore, hone, and surface checks
- Recommend OEM or upgraded head gasket at time of rebuild
- Often reveals hidden damage (cracked ringlands, scored bores) only visible during teardown
- Cost varies significantly by region and shop expertise
- RB26 blocks are robust but benefit from main stud upgrade at refresh
- vs keeping stock internals: stock internals are safe to ~400whp with care but refresh eliminates uncertainty
- vs stroker kit: refresh keeps displacement stock; stroker adds cost and complexity
- Pair with upgraded head studs (ARP) during refresh
- Replace all coolant and oil galley plugs while apart
- Pressure-test block and head before reassembly
- Any R32 GT-R targeting over 350whp
- High-mileage examples with unknown service history
- Builds using E85 where detonation risk is elevated
Billet Timing Kit
Installed to replace the factory timing components, which are a known weak point on high-power RB26 builds.
Why This Part
The RB26's OEM plastic timing guides and tensioners are vulnerable at sustained high rpm and elevated power; billet replacements are standard practice on serious builds.
- Eliminates plastic timing guide failure risk
- Maintains precise cam timing under high rpm and load
- Long service life compared to OEM plastic components
- Higher upfront cost than OEM replacement parts
- Some kits require careful installation torque sequencing
- Maintains accurate cam timing at all rpm, preserving power and reliability
- Prevents timing slip that can cause catastrophic engine damage at high power
- No direct feel change but provides confidence in hard driving
- Consistent ignition timing contributes to smooth power delivery
- Billet construction resists heat and fatigue far better than OEM plastic
- Essential reliability upgrade on any serious RB26 build
- Eliminates one of the most common causes of RB26 catastrophic failure
- Best installed during a full engine refresh while timing cover is off
- Requires correct tensioner pre-load procedure
- Follow manufacturer torque specs precisely
- OEM plastic guides can fail without warning on high-power engines
- Several reputable brands offer billet kits for the RB26
- Should be inspected at major service intervals
- vs OEM replacement plastic: billet far superior in durability at high power
- vs doing nothing: OEM guides are a known failure point at sustained high rpm
- Install during engine rebuild to save labour cost
- Source from reputable RB26-specific supplier
- Pair with quality timing belt or chain service at same time
- Any RB26 build over 400whp
- High-rpm track or street use
- Builds where engine longevity is a priority
Intake & Exhaust
1 partsTomei ARMS M7960 twin-scroll turbochargers replace the stock ceramic-wheeled units, delivering OEM-like response with significantly higher flow capacity to support 480whp on E85.
Tomei Powered
ARMS M7960 Twin-Scroll Turbochargers
Chosen specifically for OEM-like throttle response while supporting the 480whp power target on E85.
Why This Part
The M7960 twin-scroll design spools faster than conventional single-scroll alternatives of equivalent size, preserving the GT-R's trademark drivability while unlocking substantial power gains.
- Twin-scroll volute design improves exhaust gas separation for faster spool
- Well-matched to RB26 displacement and 480whp target
- Proven Tomei engineering with strong aftermarket support
- Retains the responsive, linear power delivery the R32 GT-R is known for
- Premium cost over generic alternatives
- Power ceiling lower than larger-frame alternatives for future power upgrades
- Supports 480whp on E85 with appropriate fuelling and tune
- Faster spool than OEM ceramic-wheeled turbos due to twin-scroll design
- Improved mid-range torque delivery compared to stock
- OEM-like response preserved — no significant turbo lag penalty
- Linear power build makes the car approachable on the street
- Strong mid-range pull from twin-scroll efficiency
- Tomei ARMS line has a strong reliability reputation in the RB community
- Metal-wheeled compressor more durable than OEM ceramic units
- Suitable for sustained street and occasional track use at 480whp
- Bolt-on fitment to RB26 exhaust manifold — OEM flange compatible
- Recommend upgrading oil feed and drain lines at install
- Allow turbos to cool down (idle 2-3 min) after hard use
- OEM RB26 ceramic turbos are fragile and commonly the first upgrade on serious builds
- Twin-scroll requires proper exhaust manifold pairing for full benefit
- E85 tune must be calibrated specifically for the M7960 flow characteristics
- vs Garrett GTX turbos: Garrett offers more peak power ceiling but less OEM-like response
- vs HKS GT turbos: similar positioning, Tomei ARMS often preferred for street builds
- vs stock turbos: substantially higher flow with better durability
- Pair with appropriate front-mount intercooler upgrade to maximise E85 benefits
- Have a reputable RB26 tuner calibrate boost and fuel map specifically for M7960 flow
- Upgrade oil feed restrictor to correct spec to prevent over-oiling
- R32/R33/R34 GT-R owners targeting 400-550whp street/mild track use
- Builders prioritising response and drivability over outright peak power
- E85 builds where charge cooling allows more aggressive boost targets
Fuel & Cooling
1 partsAn E85 ethanol fuel setup with a supporting tune enables higher boost and better detonation resistance than pump gasoline, underpinning the 480whp target reliably.
E85 Ethanol Tune
Full recalibration of the engine management system for E85 fuel to support 480whp safely with the Tomei ARMS turbos.
Why This Part
E85 enables more aggressive boost and timing targets than pump petrol, directly contributing to the 480whp output while providing a thermal buffer against detonation.
- Substantially higher effective octane rating vs 98 RON pump fuel
- Charge cooling from ethanol evaporation lowers intake temperatures
- Allows more aggressive boost and ignition timing for increased power
- Reduces risk of detonation on a high-compression refreshed RB26
- Requires dedicated E85-compatible fuel system (injectors, pump, lines)
- Fuel consumption increases approximately 30% vs petrol
- E85 availability is inconsistent in some markets
- Directly enables 480whp target — petrol tune would yield less power at safe boost levels
- More aggressive ignition advance possible due to detonation resistance
- Cooler charge temperatures allow denser air-fuel mixture
- Power delivery is smooth and consistent — E85 combustion is clean
- No noticeable drivability penalty in normal street use
- Engine runs cooler under sustained load
- Lower combustion temperatures extend engine component life under high load
- Requires E85-compatible fuel system to avoid ethanol-induced corrosion
- Consistent fuel quality is important — E85 blend ratios vary seasonally
- Requires custom ECU calibration by an experienced RB26 tuner
- Fuel injectors must be sized and rated for E85
- High-flow fuel pump required to compensate for E85's lower energy density
- E85 blend varies by season and region — tune should account for this
- Cold-start can be harder in low temperatures on pure E85
- Flex-fuel sensor setup allows automatic adaptation between E85 and petrol
- vs 98 RON pump petrol: E85 yields more power and better detonation resistance
- vs methanol injection: E85 is a whole-system solution vs a supplemental system
- vs race fuel: E85 offers similar detonation resistance at a fraction of the cost
- Confirm E85 availability in your area before committing to a dedicated tune
- Upgrade injectors and fuel pump to E85-compatible units at same time as tune
- Log intake air temperatures during tuning to verify charge cooling benefit
- Builds targeting maximum power from a given turbo setup
- Regions with reliable E85 supply
- Builders prioritising power density and detonation safety margin
Some numbers were intelligently inferred — verify before publish.
Results · Stock vs Build
Every number measured, verified, and compared.
Horsepower
+204 hp · 73.9%Torque est · review
+130 lb-ft · 50.0%0-60 est · review
-1.2 sec · 25.0%1/4 Mile est · review
-1.6 sec · 11.9%Top Speed est · review
+10 mph · 6.5%60-0 Braking est · review
-5 ft · 4.2%Driving feel vs stock
- Handling est · review76/72
- Ride Comfort est · review55/60
- Steering Feel est · review70/70
- Acceleration est · review88/62
- Braking est · review67/65
- Exhaust Note est · review82/68
- Drivetrain
- AWD ATTESA E-TS
- Transmission
- 5-speed manual (Getrag)
- Engine
- 2.6L Twin-Turbo I6 (RB26DETT)
- Induction
- Twin-scroll turbocharging (Tomei ARMS M7960)
- Curb Weight
- 3,084 lbs
- Fuel
- E85 ethanol
- Wheels (F/R)
- Not specified
- Tires (F/R)
- Not specified
- Suspension
- Stock configuration (not specified in source)
- Brakes
- Stock configuration (not specified in source)
- Alignment
- Not specified
- Ride Height
- Not specified
4 parts tagged across 3 systems. Live pricing & purchase links arrive with the product catalog (Phase 5).