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JAM FCD & External Wastegate Spring problem!


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hi everyone, i purchased a JAM FCD, FPR & external wastegate spring (0.9bar) for my glanza



I started with installing the fcd and one it was installed the car was idling like shit and for some reason I could not boost and the car was missing, I then took off the cover of fcd and noticed the adjuster on the inside had been fiddled with so I moved it clockwise and the car sounded a lot better but not as good as it did without the FCD. once I adjusted it I took the car out for a spin and boost was working again with out a problem and the car drives better and didn't sound like it was missing but when slowing down with the car in gear it judders like mad (never happened before without the FCD). I asked a couple of friends and they said that most likely its making the car run rich. I then installed the FPR without a problem and increased the fuel pressure and then changed the external wastegate spring from a 0.4bar to 0.9 bar. the new spring was not as wide as the original one but I fitted it in anyway and when I took the car for a spin it was boosting over 1 bar and was hitting fuel cut. Can anybody enlighten my situation please



external wastegate is a non branded (ebay I think) and the spring was bought of ebay from demon motorsport


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its a JAM fcd so doesn't have a numbered setting like the HKS, but it has an adjuster inside the box under the cover. but yeh I rang the guy and he said that the springs only suit certain wastegates :|


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