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header, exhaust, replacement cat
ok here we go, 91 rx-7 non-turbo with HKS Hi-Power Exhaust http://www.hksusa.com/products/?id=715&rsku=3836 then thinking of adding Catalytic Converter Replacement Pipe with Presilencer http://www.racingbeat.com/FRmazda2.htm would I then want a new header? if so who makes good ones?
after that what would you people suggest to do next?
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1989 RX-7 TII --- Just got rebuilt and street ported
RB 3" dual exhaust, BNR stage 1 modified factory turbo, FCD, S-AFC II,
720cc secondaries, Aftermarket Turbo inlet duct w/K&N, Hawk HP+ pads
HKS Blow-Off Valve, Stainless brake and clutch lines
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