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Engine cutting out


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I have an R34 GT that had a turbo added. It runs for a couple of mins then the engine just cuts out.  And requires pumping the throttle to start it back up.

I unplugged the MAF and it runs without cutting out at all although the AFR is all over the place. I have replaced the MAF but am back to my original issue.

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On 16/6/2024 at 4:11 AM, niZmO_Man said:

You need to provide more information, like what ECU, injectors, fuel pump etc. you have.
those make a difference when you're converting from N/A to turbo

 


 

All the turbo parts are off a RB25DET NEO, so that includes the intake plenum, fuel rail, injectors, throttle body. Only exception is the eBay turbo.

i think I worked it out. The air from the Blowoff valve was not being recirculated. This was causing it to go super rich when I come off the gas and flood. I just have to work out how to recirculate with my intake setup

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On 6/21/2024 at 9:32 PM, OO Dan OO said:


 

All the turbo parts are off a RB25DET NEO, so that includes the intake plenum, fuel rail, injectors, throttle body. Only exception is the eBay turbo.

i think I worked it out. The air from the Blowoff valve was not being recirculated. This was causing it to go super rich when I come off the gas and flood. I just have to work out how to recirculate with my intake setup

Yeah, that will definitely do that. Don't delete the BOV altogether either as the factory MAF cannot deal with reversion induced by compressor stall.

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On 16/6/2024 at 4:11 AM, niZmO_Man said:

You need to provide more information, like what ECU, injectors, fuel pump etc. you have.
those make a difference when you're converting from N/A to turbo

 


 

All the turbo parts are off a RB25DET NEO, so that includes the intake plenum, fuel rail, injectors, throttle body. Only exception is the eBay turbo.

No parts are off an R33.

I have bits and bobs in terms of parts.

And that Nissan Consult device plugs in under the steering column. You need to pull this tab down on the right hand side.

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On 26/06/2024 at 10:24 AM, OO Dan OO said:

I have now plumbed the BOV back to intake and this has solved my issue

nice one, sometimes it's the simple things (plumb back is better anyway)

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