100% Injector Duty :s

[SLYDA]

Hey,

Just had power fc report max hold 100% injector duty and dash engine light start flashing, im waiting for new HKS GT3037 Pro S kit to turn up and splitfire coils, have not ordered injectors yet, but im looking to hit the 280RWKW mark till i build a new motor what size should i get? 740cc or 850cc? im looking at getting to around 350-360RWKW with a built motor, but i still thought these stock injectors were good for 240RWKW ??? :S... i mean it feels fast.. but not that fast.... (its only running 14PSI with front mount etc etc) ohh! got rid of that stupid flat spot i had by changing fuel pumps 255L walbro and puttin the powerfc in (dont know what fixed it) did it at the same time.

thanks everyone!

[Alf]

740cc will be fine

[Duncan]

do not let it run at 100% duty cycle you will ping your motor to death quickly. If it hits 100% your poor old injectors are open all the time trying to provide enought fuel. even 90% is pushing it but 100% is deadly

[VB-]

ahahaha alf i love your avatar

[SLYDA]

yehh i dont have a license anyway.. just took it for a smash up the street.. (it doesnt normally get driven)... like ever... 2 years its done about 5000kms... how much power u think at 100% it would have been pushing? and i do realise not to keep doing it.. i backed off as soon as i saw the engine light.. checked the fc to see what was wrong and was like :S.... weird.. ! new walbro fuel pump must be doing its job.

[Adriano]

If you are looking at those power levels i would get a bosch fuel pump. the walbros are renown for dropping flow as soon as the pressure gets up. You could use the walbro to feed a surge tank then use an external bosch 044 pump. 740cc injectors will be fine.