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FCD - what do they do?


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Hi guys, I am just wondering what the different settings mean on a HKS FCD?


I understand the bypass fuel cut.



I am soon investing in an emanage as I know the FCD/FPR is very much frowned upon



Most people suggest '8' as the figure for a mildy modded engine



I'm guessing the lower the number, the sooner it will hit fuel cut but what if your car runs spot on at setting '8' but you turn it higher to '12' for example?? Does it give the car too much fuel.... I'm confused why if you have one you wouldnt just set it to the highest setting?



Thanks, Dan


Edited by Haresign
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They trick the ECU in to thinking it's running the most boost that the ECU can handle without an FCD.

People frown upon them a lot, so wait for the dozens of people to tell you to spend £500+ on an emanage blue for about 3bhp gain lol. Yaaar.

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