A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Boost Control?

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Old Jan 14, 2002 | 12:12 PM
  #1  
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Default Boost Control?

How do you install a A-pex i boost control on a 99' a4 1.8t

email me please...
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Old Jan 14, 2002 | 01:29 PM
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DO NOT DO IT..............unless you are really looking for a good rebuild excuse
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Old Jan 14, 2002 | 02:33 PM
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Default why?

why?...
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Old Jan 14, 2002 | 05:00 PM
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Default Because a boost controller will just run the psi you set it to. The K03 and K04 can not make

that psi to red line so the car will run too lean up top. Boost controllers were made for big turbos.
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Old Jan 14, 2002 | 09:20 PM
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Default not the apex-i

the boost control i got learns by itself. and you can set it yourself
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Old Jan 14, 2002 | 10:26 PM
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It just learns to be smooth. But if you raise up the boost you will be running lean
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