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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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#2 |
Lifetime Rotorhead
Join Date: Apr 2010
Location: Elkton, MD
Posts: 874
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IIRC, the S4 NA uses exhaust back pressure to actuate the aux ports, correct? Just a WAG but maybe the change in back pressure has something to do with this. Has the performance across the whole RPM band up to & including redline changed, relative to where it was before?
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