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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections. |
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#1 |
RCC Addict
Join Date: Mar 2008
Location: Honolulu, Hawaii USA
Posts: 1,813
Rep Power: 19 ![]() |
Yes, the J-spec S4 twin scroll is backwards versus the US-spec system.
This is due to the RHD steering column snaking it's way next to the turbo on that side of the engine bay. We usually yank the twin-scroll and plug the actuator hole with an NPT plug. The twin-scroll gets in the way, and the turbo flows better with it removed. -Ted |
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