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OKADA ENGINEERING Stage 1 ECU upgrade chip for the Mazda Gen 2 RX-7 TURBO II FC3S & FC3C fitted with the 1.3L turbocharged 13B engine & N374 ECU.
This uprated ECU chip features uprated fuel & timing maps, as well as removal of the speed limit and factory fuel cut. It comes complete with a chip socket which is required for safe installation in your ECU.
The following modifications are recommended:
Mazda ECU Part No. N374 18 881B
Denso ECU Part No. 079700-2301
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