|
Re: Injector question
Nismo 550's are awesome injectors... beware modded STi injectors or other larger injectors. Been too long since I knew all the lovely little facts, but the space above the 550's is ripe with injectors that are nearly impossible to control at low duty cycle or have serious linearity issues where a tiny change in duty cycle can have huge effect, and a large one nearly none at all.
Shouldn't matter as 550's are a ton of injector for most STi's, and having 50% more of them....
For modest improvements in fuel system capacity, you can allways just use a fuel pressure regulator and a good fuel pump. FPR's work by increasing the pressure differential across the injector which increases the flow. Puts more stress on the fuel pump though and the higher the fuel pressure, the lower the flow the pump can put out. While I'd advise proper injectors over making major increases in the fuel pressure, people have used FPRs for decades. Once opon a dark time they would even tune the engine with selecting a proper rate in a rising rate FPR as they were turbocharging a normaly non-turbo motor with EFI and no fuel tables for positive pressure.
|