Cob is not a piggy back. It's a PCM re-flash tool that reprograms the factory ECU. You don't leave it connected like say and SAFC-II (an actual piggy back). Even the Power FC is a stand alone computer (This is an FC / FD computer though)...
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My Cars:
1974 RX4 Coupe
1991 FC3S RX7 - Sold
2003 ZZW30 MR2 (Rotary swap after RX8)
2004 SE3P RX8 (20B Swap in the works)
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