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Triggering Safe Mode

daniel23a

By daniel23a,
in Engines & Forced Induction

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daniel23a Contributor

daniel23a

Posted
Posted

Hey all,

Firstly, I have an R33 GTS25t, and am really enjoying going through the forums finding neat diy mods that you guys have written up. For my next little project I am wanting to trigger the 'safe mode' of the ECU. I understand the engine has this to allow one to "limp" to a garage if it senses a problem. I have a few questions:

1) What is the 'safe mode' and how does it limit the engine (and to what extent)

2) Is the 'safe mode' safe to run if triggered in normal driving conditions?

3) Can the 'safe mode' be triggered using a +12V supply?

Please note that i have tried a search, but the search function is piss poor, either that or I'm just shit at using it.

Also a bit off topic - what is the supply voltage for a gauge light - 12V?

Cheers, Daniel

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cheez Mentor

cheez

Posted
Posted

1) safe mode limits the engine to 2500rpm approx, and de-powers it. literally limps it.

2) wouldnt want to have the car activate safe mode when driving normal. could cause problems.

3) no cant be triggered using 12v. its a sensor generated reaction to a problem

plus y are u wanting to trigger safe mode?

daniel23a Contributor

daniel23a

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thought I might try to use it as a valet mode sort of thing, using the high boost switch as a trigger ie. when valet system activated, say a friend can drive car around fine, but if pushed past 4500rpm safe mode is triggered, requiring restart of engine. Obviously would inform person driving not to go past 4500rpm.

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