2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

720 secondaries for 11psi boost?

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Old Jun 5, 2002 | 05:44 PM
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720 secondaries for 11psi boost?

i was wondering if i wanted to run more boost should i get 720 secondaries? if so what kind do i need high resistance peak and hold ones right? does anyone have some for sale? if so how much? if not where can i get some for a resonable [price? thanks
-josh
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Old Jun 5, 2002 | 05:47 PM
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also would running 11psi boost with stock turbo and intercooler be a bad idea?
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Old Jun 5, 2002 | 06:40 PM
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its a 89
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Old Jun 5, 2002 | 08:53 PM
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Im running 12 psi on the stock injector setup. I have a Walbro fuel pump and have rewired it. A wideband O2 dyno shows I have plenty of fuel flowing, even reducing my % above 4000 rpm with the S-AFC.

If the FD fuel pump flows 255 lph or more, and gets at least 12 volts, you will not need 720s running 11psi.

Mike
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Old Jun 6, 2002 | 12:53 AM
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Originally posted by 89turbo2dutch
If the FD fuel pump flows 255 lph or more, and gets at least 12 volts, you will not need 720s running 11psi.
No it doesn't.&nbsp The FD fuel pump flows about 10%-15% more than the stock FC turbo one.&nbsp The Stock FC turbo fuel pump barely flows 190lph.&nbsp The tock FD fuel pump flows more like 210-220lph.



-Ted
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