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Location: Kita-Ku, Sapporo, Japan
Registered: January 2003
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Re: RTA Regulations on engine modifications?
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Sat, 19 November 2005 11:23

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well.. unless approved specifically, aftermarket ECU's are not legal...
nor are changes to stock ECU, but it is harder to do that...
performance doesn't HAVE to increase emissions... but big cams will increase overlap = more emissions...
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