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ranisron · 06-12-2006, 07:16 AM

most high comp pistons for the DE is the 10.5 to 1 ratio. However, the E pistons can bump the compression all the way to 11 to 1 (correct me if I am wrong).

10.5 to 1 will run on pump gas no problem, and getting your ECU retuned for high comp application is recommended.

anything above 11:1 is unsafe for the KA (I think).

06-12-2006, 07:16 AM	#31
ranisron Zilvia Addict Join Date: Aug 2003 Location: Bloomington, IN Age: 42 Posts: 766 Trader Rating: (0)	most high comp pistons for the DE is the 10.5 to 1 ratio. However, the E pistons can bump the compression all the way to 11 to 1 (correct me if I am wrong). 10.5 to 1 will run on pump gas no problem, and getting your ECU retuned for high comp application is recommended. anything above 11:1 is unsafe for the KA (I think). __________________ U13 and S13 zilvia members are friendly