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Discussion Starter #1
got my power fc today put it on car turned ignition on and this clicking started, i looked in the boot and it is a blue relay next to fuses ?
car would not start put standard ecu back on and no noise and car started ?

what is this blue relay ?

thanks people
 

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Discussion Starter #3
what a fantastic link thanks, but it did not help it does have a option for exactly what i have described but then when i read it they are talking about the eccs relay not the fuel pump relay,
 

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i used to get the clicking relay on my r34 gtr with the apexi.

found it to be a loose apexi boost controler connection going into the ecu,check all connections.move all connectors and wires with the engine running for hopefully a quick diagnostics:thumbsup:
 

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The Power FC is much more sensitive to ground wire issues than the stock ECU, you might want to check your grounds. Do you have access to a schematic?
 

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Try to push the ecu connector in on the side's if you understand.
I think i had the same problem on my car, the ecu connector was "bendt" when someone overthightend the bolt that holds it in.
Solved it with a pair of cable ties around the box and connector.
Hard to explain for me since i'm so bad at english but i hope you understand.
 
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