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Re: how is the 5th injector activated with a turbo (euroscene17)

Unless there is some funky rewiring done with the turbo install, that 5th injector is a cold start valve, providing enrichment before the engine warms up only.
 

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Re: how is the 5th injector activated with a turbo (euroscene17)

you can use a NOS fuel safty presure switch ,, you just tap your manifold and tread it into it, the switch opens up at 8 psi and works great up to about 18psi
 

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Re: how is the 5th injector activated with a turbo (euroscene17)

You could use a Hobbs pressure switch to control the 5th injector.
Problem is that there is no way that the 5th injector is going to give you anywhere near even fuel distribution to all four cylinders.
Boost sensitive fuel pressure regulator would be a much better solution.
Good luck,
fat biker
 
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