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Boost Cut Defender

rs73

By rs73,
in Engines & Forced Induction

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rs73 Grand Master

rs73

Posted
Posted

whew......

finally received my S-AFC and Turbosmart boost valve...

at what psi level do I start to need boost cut defender??

I assume boost cut defender = fuel cut defender ? is it correct?

Turbosmart made one for abt $100 for valve type and $175 for electronic one... which budget product is better value for the dosh$$$? I'm pretty tight here already, still need to save more $$$ for exhaust.

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whatsisname Grand Master

whatsisname

Posted
Posted

As the RB25DET (in fact almost all Nissan turbo engines) uses the AFM signal to cut fuel on over boost you can’t use a simple pneumatic bleed to defeat it :( You'll need an electronic defender.

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rs73 Grand Master

rs73

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thx....

however if I only running around 10psi, fuel cut shouldn't be an issue??? I'm not after very ambitious boost as my auto gearbox may not hold...

unless circumstances change and I manage to convert my auto to manual.... :(

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whatsisname Grand Master

whatsisname

Posted
Posted

You'll be fine on 10psi :O Where your car hits the boost/fuel cut will depend on the density of the air, i.e a cold night / early morning it'll hit the cut on lower boost than during a mild day and so on... But 10psi shouldn't be enough for it cut @ all.

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