Quote:
Originally Posted by eclipse97gs-t
Everyone has a different opinion on injector size its driving me crazy. Some people say you will never max out 650s with a 50 trim and some people say get 880s or 1000cc for a 20g. fuel injector calculators tell you over 1000cc for 400hp with 4 injectors in a turbo application. Every time I think I’ve decided on what I’m going to get I hear something different. I am planning on a turbo upgrade but not for a few years so I’m not just trying to get the best injectors for the 20g. Any input would be awesome.
|
With an AEM EMS it makes sence to run the largest injector that you can feasable control if:
1)You can get the Microsec pulse down to get the spray pattern down.
2)Keep the IDC's lower. Yes OEM's run them high, but if you can run an aftermarket injector around 70-80% IDC then it is just healthier for the parts.
3)AEM injector drivers are not as good as some OEM's. You usually need more injector with an AEM EMS compared to using piggybacks and factory ecu's.
Shane has some good info regarding sizing and what not. Since PTE charges the same from 580-880cc injectors, it makes sence to give yourself some room to upgrade.
Also, what boost you plan on running and gasoline type plays a HUGE role on injector sizing. What is good for race gas isn't good for pump, and visa versa.
If you plan on running huge boost on 92 octane you will need more injector compared to C-16 due to different target AFR's.