The stock turbo outlet isn't capable of expunging the exhaust gasses efficiently. Especially at
high rpms with higher boost, the confined exhaust gasses are unable to flow efficiently through
the turbo, causing unstable boost. Upgrading the turbo outlet to one with a larger opening helps
solve this issue, providing improved turbo spool and stable boost.
Similar to the turbo outlet, upgrading the front pipe improves performance in both the
mid range and top end.
Upgrading to a metal catalytic converter greatly reduces exhaust flow resistance whist
maintaining it's core function of reducing toxic gasses.
Similar to the turbo outlet, upgrading the exhaust improves performance in both the
mid range and top end.
The ECU should be adjusted to suit the vehicle/setup.
As the power increases, so does the combustion temperature. Using spark plugs of the same
heat rating as stock may cause them to melt. To avoid this, it is recommended that you use
No. 8 / 9 spark plus. However, ensure you check the spark plug tips to determine the best solution.
This setup guide is for reference only.
Parts selection and tuning should be made based on you particular setup and/or intended use.
SPARK PLUGS
STD
No. 8 / 9 or similar
TUNED
TURBINE OUTLET
STD
Stock
TUNED
High flow, high efficiency type
FRONT PIPE
STD
Around φ76.3
EXHAUST
STD
Around φ80〜90
CATEGORY
RECOMMENDATION
TUNED
ECU
STD
Vehicle/setup specific
TUNED
TUNED
CATALYTIC CONVERTER
STD
Metal type
TUNED
39
