SETUP GUIDE
This turbocharger is capable of making over 450ps @ 1.6㎏/㎠（22.8psi）boost.
However, actual results will vary depending on the condition of the vehicle.
Note that boost settings should be made in 4th/5th gear. Configuring boost in lower gears
will result in higher actual boost as load is significantly greater at higher gears.
(You may notice that boost begins to fall as you raise the rpm beyond peak boost. This is normal)
Camshafts, turbo suction pipe, exhaust manifold, turbo outlet, catalytic converters as well as
exhaust systems can all impact performance. With stock camshafts, exhaust manifold and turbo
outlet around 350ps is achievable @ 1.2㎏/㎠（17.1psi） boost. Upgrading all the above
should make around 450ps @ 1.6㎏/㎠(22.8psi) boost.
Stock 1JZ pistons can withstand up to around 600ps provided the engine is healthy.
However, upgrading to forged pistons is highly recommended for engines with compression loss
and/or other issues.
Stock 1JZ connecting rods can withstand up to around 500ps.
Beyond this, it is highly recommended that you upgrade the connecting rods.
Stock camshafts are incapable of generating the exhaust pressure needed to take advantage of the
larger turbo. Upgrading the camshafts will allow you to maximize the potential of the turbo.
Increasing the boost will also increase the combustion pressure. It's possible to increase the
boost up to around 1.6㎏/㎠（22.8psi）even with a stock head gasket. However, lowing the
compression ratio will allow you to fine tune the engine. To maintain a secure seal at high boost
is it strongly recommended that you upgrade to a high performance head gasket with superior sealing.
Gasket thickness should be selected based on the desired compression ratio.
For reference, TOMEI φ87.5-1.8㎜＝8.8:1 CR, φ87.5-2.0㎜＝8.:1 CR6 however actual figures will
depend on the amount of resurfacing/head work that has been undertaken.
PISTONS
STD
CAMSHAFTS
TUNED
1.6㎏/㎠(22.8psi）with boost controller
CATEGORY
RECOMMENDATION
BOOST SETTING
STD
1.0～1.2㎏/㎠(14.2～17.1psi）with boost controller
POWER
STD
350PS
TUNED
450PS
STD
Stock
TUNED
TOMEI PONCAM or similar
HEAD GASKET
STD
Stock
TUNED
TOMEI METAL HEAD GASKET or similar
CONNECTING RODS
STD
Stock
TUNED
H-BEAM CONNECTING RODS
Stock
TUNED
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