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TOMEI

Tomei T400M-EJ/TS TURBINE KIT EJ TWIN SCROLL for JDM: GDB/GRB/GVB/VAB

Tomei T400M-EJ/TS TURBINE KIT EJ TWIN SCROLL for JDM: GDB/GRB/GVB/VAB

SKU: 173103
£2,705.27
£2,705.27
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CHRA made by IHI + Fully divided twin scroll ports

TOMEI T400M is designed for superior performance at very wide range of engine speed with the combination of the IHI center unit and the twin scroll turbine housing.
Drop-in design for ease of installation, yet promises a great drivability from street to track.
The reinforced wastegate actuator helps a stable boost under high engine speed.

PRODUCT INFO

APPLICATION P/N NOTES
GDB/GRB/GVB/VAB 173103 Note: Turbo Suction Hose also needs to be replaced when install on GDB.

FEATURE / SPEC

Special housing design & Twin Scroll Construction


The new turbine housing with fully divided twin scroll ports all the way to the turbine wheel helps smooth exhaust flow by eliminating interfere against each flow. Designed to make the most of the twin scroll system to minimize the turbo lag while keeping the torque at low speed range and gaining peak power.
2 divided gas inlets,2 divided scrolls




T400M-EJ/TS has been designed to best match the floating bearing CHRA developed with IHI. Ultra low friction from the optimized rotating efficiency helps quick spool and superior durability.

Bolt-on application

Reinforced actuator
Easy bolt-on installation, no modifications required. The short parts required for the installation, such as hose, gaskets and studs come with the kit. (Kit does not include suction hose or vacuum tube, prepare individually as necessary.) Remarkable stability under high boost.

1 YEAR WARRANTY


The T400M Turbo Kit comes with a 1 year limited warranty after purchase.


SPEC

  • COMPRESSOR WHEEL DATA
    • TRIM INNER DIA. OUTER DIA. BLADES
    58 49.6 65.0 6+6

  • TURBINE WHEEL DATA
    • TRIM OUTER DIA. EXIT DIA. BLADES
    82 53.0 48.0 11

    DATA


    Responsive and superior balance


    Responsive yet more power, precisely balanced to achieve the concept by the perfect combination of the compressor, turbine wheel and all the internal parts. Quick response in low-mid range, straight up to high end with the smooth power swelling as the engine speed goes up. Perfect choice for from street to short track.
    SETTING GUIDE
    ITEM RECOMMENDED SETUP
    BOOST SETTINGS STOCK ENGINE:1.2㎏/cm2 (17.07psi） With Boost Controller
    Engine Tuning with a 2.0L, 2.2L Base: 1.4-1.5㎏/cm2 （19.9-21.3psi）With Boost Controller
    Approx. around 1.2㎏/cm2 (17.07psi） boost and around 350ps is the maximum with a full stock engine considering capacity of the stock head gaskets and the other stock internals.
    The turbo is designed to be able to go up to 1.5kg/cm2 (21.3psi) when combined with forged pistons, forged H-beam conrods and other required parts described in this section.
    However the maximum boost the engine can withstand widely varies depending on engine condition etc.
    Boost setting should only be performed when the gear is in 4th or 5th gear as it could cause unexpected high load and a higher boost than desired in higher gears if the setting is performed in a lower gear.
    ACTUATOR SETTINGS Not Required since a boost controller is to be used.
    The wastegate actuator has been pre-set from factory and no further adjustment is required in most cases.
    It is recommended to use a boost controller along with T440M Turbo which helps to maintain stable boost and allows to adjust overall feeling.
    Adjustment of the wastegate actuator should usually only be performed as a sub-adjustment to help boost controller adjustment.
    TARGET POWER STOCK ENGINE:350PS
    Engine Tuning with a 2.0L, 2.2L Base: 400PS
    Approx. around 1.2㎏/cm2（17.07psi） boost and 350ps is the maximum with a full stock engine. It is highly recommended to use forged pistons / conrods and a reinforced head gasket when set the boost to 1.5㎏/cm2. Read carefully and follow the following setting guides with a modified engine, especially with a stroker engine with 2.2L or more in displacement to let the turbo properly perform.
    PISTONS STOCK ENGINE:RECOMMENDED/TOMEI FORGED PISTON KIT
    Engine Tuning with a 2.0L, 2.2L Base: FORGED PISTONS RECOMMENDED/TOMEI FORGED PISTON KIT
    The stock pistons can only withstand up to approx. around 350PS and forged pistons are required from this power level and higher. The stock pistons will likely fail due to a significantly higher combustion pressure and pre-ignition caused by them if run 1.4-1.5kg/cm2 (19.9-21.3psi), the designated boost amount to achieve the full performance of TOMEI Turbo. Forged pistons along with reinforced head gaskets are required to make the most of the performance of TOMEI Turbo
    CONRODS STOCK ENGINE:RECOMMENDED/TOMEI H-BEAM CONRODS
    Engine Tuning with a 2.0L, 2.2L Base: H-BEAM CONRODS RECOMMENDED/TOMEI H-BEAM CONRODS
    The stock connecting rods are one of the weak points of the EJ series engine. When aiming for more than 350PS, then it is highly recommended to upgrade the conrods to stronger forged conrods.
    CAMSHAFT Recommended: TOMEI PONCAM
    The stock camshafts are inadequate to obtain sufficient exhaust pressure to spool a larger turbo.
    Upgrading camshafts helps spooling the turbo quicker from lower rpm, as well as spooling up at high rpm range that pulls the true performance of T440M Turbo and gives even more peak power as a result.
    HEAD GASKET STOCK ENGINE:STANDARD RECOMMENDED:TOMEI METAL HEAD GASKET
    Engine Tuning with a 2.0L, 2.2L Base: CHANGE TO METAL TYPE RECOMMENDED:TOMEI METAL HEAD GASKET
    Although the stock head gaskets of EJ series engines are metal type gaskets, there is still a good chance of being blown under high boost due to significantly increased combustion pressure than they are designed to deal with, that can be prevented by evenly stabilize the deck surface pressure using reinforced gaskets. Choose gasket thickness to achieve desired boost setting and compression ratio to suit each set up
    INJECTOR SIZE STOCK ENGINE:650cc or Higher
    Engine Tuning with a 2.0L, 2.2L Base: 750cc or Higher
    Required injector capacity to suit each setup can be calculated as follows. Target Power(HP) x 5.9 ÷ No. of Cylinders =injector volume (cc) required per cylinder.
    10-20% higher volumed injectors than the amount calculated above is recommended to obtain ideal spray on high rpm range.
    FUEL PUMP Recommended: TOMEI 255 /h
    Required fuel pump capacity to suit each setup can be calculated as follows.
    Injector volume (cc) x No. of Cylinders x 0.06 = Fuel Pump flow rate (L/h) required for the system.10-20% higher rated fuel pump than the amount calculated above is recommended to stabilize the fuel pressure at all time.
    FUEL PRESSURE REGULATOR Adjustable Regulator required. RECOMMENDED ：TOMEI type-S
    Adjusting fuel pressure is required when fuel pump is upgraded.The fuel pressure should usually be adjusted to 3kg/cm2 under the atmosphere pressure.
    AIR FILTER HIGHT FLOW TYPE
    Higher flowing, less restrictive air filter is recommended for a better performance.
    MAF SENSOR STANDARD MAF / MAF LESS SETUP
    The stock MAF sensor supports up to approx. around 400PS.
    EXHAUST MANIFOLDS TOMEI EXHAUST MANIFOLDS or Similar
    The increased exhaust pressure at exhaust manifold, that is increased by upgrading the camshafts, now should be efficiently lead to the turbo for the best performance. The smoother the pressure goes into the turbo, the quicker the turbo spools. On EJ series engine however, too thick pipe diameter to the turbo actually results a poor response because of the long distance from the engine exhaust ports to turbo. Equal -lengthed exhaust manifold may require the oil pan to also replace on models with factory unequal-lengthed exhaust manifold.
    TURBO OUTLET
    METAL CAT / FRONT PIPE    		 RECOMMENDED: METAL CAT PIPE DIAφ70～φ76.3
    The stock exhaust components, turbo outlet – catalyzer – front pipe, are definitely not ideal setup when seek more performance due to their restrictive design. Decreasing restriction in the system, equals increasing exhaust flow capacity, helps to release back pressure at the turbo quicker. This stabilizes boost, increases turbo efficiency and thus allows higher boost setting.
    EXHAUST Recommended: Main Pipe φ80
    By using a similar sized pipe (φ80～90mm), the exhaust gas flow will be smoother, this will greatly aid to maximize exhaust flow and to prevent any performance restrictions.
    SUCTION PIPE STOCK ENGINE:REQUIRED (CERTAIN MODELS ONLY) / RECOMMENDED：TOMEI SUCTION HOSE
    Engine Tuning with a 2.0L, 2.2L Base:REQUIRED: TOMEI SUCTION HOSE
    The stock turbo suction pipe can be deformed and decrease air flow efficiency under high pressure that it’s not designed to deal with. Upgrading the turbo suction pipe is very effective especially on EJ series engine, however due to the high effectiveness, it is recommended to tune the ECU to match the increased air inlet and the MAF sensor when the turbo suction pipe is upgraded.
    INTERCOOLER STOCK ENGINE:UPGRADE RECOMMENDED
    Engine Tuning with a 2.0L, 2.2L Base:UPGRADE RECOMMENDED
    Compressed air from the Turbo goes into the engine. This process increases the air temperature and lowers density of oxygen in the same volume of air that also lowers the combustion efficiency. Supplying the compressed and well cooled air by a better radiating intercooler increases the combustion efficiency that results a better performance and more power.
    BLOW OFF VALVE
    (Recirculation Type)    		 Recirculation type of blow off valve is required.
    Delete the stock air relieve valve system.
    Without a blow of valve, the compressed air from the turbo when the throttle is suddenly closed would have no where to go and excessively stress the turbo due to a force then generated and tries to stop the turbo from spinning at a very high rpm, The blow off valve protects the turbo, however the stock blow off valve tends to keep releasing boost under high boost and it causes poor response and less peak power. It is not recommended to use a vent-to-atmosphere type when MAF sensor is used for engine management as it causes the ECU not being able to obtain the correct air mass readings that leads to improper A/F ratio.
    ENGINE MANAGEMENT Optimize the Engines Setup
    ECU tuning to suit each setup is required to optimize the performance and fuel efficiency as well as to protect the engine.
    PLUG UPGRADE REQUIRED Recommended: 8~9 Heat Range
    The stock spark plugs are too low on their heat value for the increased combustion temperature that may cause preignition and cause the spark plug electrodes to melt down and pistons to seize / erode.Recommended plug heat value is usually 8-9, however, the best setup varies engine to engine depending on usage,condition etc.
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