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#1
10-11-2003, 05:58 PM
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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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#2
10-11-2003, 07:33 PM
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Go with the rcing beat header and presilancer. Actually the presilancer was made for that header. It will be very loud I hope you know that.
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Sideways makes me happy 1987TII with 13B-REW Swap 
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#3
10-12-2003, 11:10 PM
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ok so theres:
A.presilencer and cat replacment B.presilencer and header if I get A won't I need a new header still and if I get B won't I still need a new cat? and which way would be best for a N/A
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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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#4
10-13-2003, 09:24 AM
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Presilancer takes the place of the cat.
With the racing beat setup you need to replace the cat when you do the header. Their lengths are jacked compared to stock. I cannot remember the exact length diferences right now but I know we tried to use the RB Header on my bro's GXl and it would not work without using the presilancer. I honestly would call Racing Beat and talk to them they know the best.
__________________
Sideways makes me happy 1987TII with 13B-REW Swap
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