Spark Plug for 4AGE BT 20v engine is IK20.
For further information, u may refer this website
http://www.globaldenso.com/en/products/aftermarket/plug/basic_knowledge/heatrange/index.html
wad is the ideal exhaust setup for a stock or slightly modified 1jz-gte auto engine?
A) 3 inch piping all the way wif straight flow bullet n straight flow muffler
B) 2.5 inch piping all the way wif straight flow...