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Rough idle


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I have a R33 series 2 gtst and have a Link G4 for over a year. Its great, except for 1 thing. The idle, since it was tuned has been rough, sounds like I've got cams, to some extent.

I've had the tuner look at it and he reckons its my injectors. Im using Subary 450CC rated ones. I had these cleaned and flow tested and verified that they were all flowing around 530cc.

I have since rewired the fuel pump and its made a difference somewhat, but a hot idle is the same. Its annoying as it sounds sick.

What would be causing my issue please? 

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