twinkle-starlet
Member +
wanting a jam fcd i have a hks one but dont like what i heard bout them !!!
wanting a jam fcd
- Thread starter twinkle-starlet
- Start date
twinkle-starlet
Member +
really ? i was talking to j25gti and he seems to think otherwise ? im quite happy with the hks to be honest but was just a bit sketchy when he said that the jam one leans off after fuel cut where as the hks one doesnt ? is this true and if so is this bad ?
ChrisGT
Member +
In a nut shell the HKS ones will send false voltages to the ECU for all levels of boost. This means you will be running leaner than normal but if you have a RRFPR and someone who can monitor your AFR they can adjust it to compensate.
The JAM FCD's are clamp types. So for all boost levels below fuel cut it will send the correct voltage to the ECU, but as soon as you go over it will send false voltages. So for this to work you'll need to turn your RRFPR up enough to cover yourself when on full boost, which subsequently means you'll be running very rich off boost and on low boost.
The reason HKS ones get slated is because stupid people fit them to their cars with no fuelling mods, turn up the boost and melt a piston. But if you have a RRFPR and a wideband and can set it up properly, it will be fine!
The JAM FCD's are clamp types. So for all boost levels below fuel cut it will send the correct voltage to the ECU, but as soon as you go over it will send false voltages. So for this to work you'll need to turn your RRFPR up enough to cover yourself when on full boost, which subsequently means you'll be running very rich off boost and on low boost.
The reason HKS ones get slated is because stupid people fit them to their cars with no fuelling mods, turn up the boost and melt a piston. But if you have a RRFPR and a wideband and can set it up properly, it will be fine!
twinkle-starlet
Member +
rite ok well i should be ok then as i got fpr and uprated fuel pump and its all being setup saturday !