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

Safe Boost Level?

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Old Nov 24, 2001 | 12:44 AM
  #1  
PSTN KLR's Avatar
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From: Darwin, Australia
Safe Boost Level?

Hey everyone
I was just wondering what the maximum boost you guy's would run a Stock Series 4?
and how much could you increase it if you put a full turbo back exhaust on it?
and at what PSI does the factory fuel cut come in?
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Old Nov 24, 2001 | 12:50 AM
  #2  
Scott 89t2's Avatar
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factory full cut should come on at anything over 6psi, but some cars don't till 8-10. adding a full turbo back exhaust will bump you up to 10 easy and past fuel cut. you can get a FCD but at 10psi you are maxing out your fueling and should be doing some fuel mods as well.
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Old Nov 24, 2001 | 02:42 AM
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Poindexter10thae's Avatar
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I believe what PSTN KLR is implying is how much boost a series 4 motor can take before it blows, meaning with all the appropriate fuel and exhaust mods, and an upgraded turbo, how much boost can this motor handle

I am curious as to this myself
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