just wondering how much hp i can push out with these injectors before hitting up the dyno. will be using a relay on a 190walbro fuel pump with 50psi on the rail. will 300hp be possible... really looking to make in the high 200hp. car is a budget d16 turbo.

 

you can do high 200's i would say anything under 300 is ok.

 

they'll do about 340whp at 114% Duty

been theyre done that lol didnt really care either

just get some 750cc , its better to have more than enough than to just have enough.

 

you can do high 200s. i wouldnt want to go above 300 on remotely stock fuel pressure.

i had a bad case of boost spike a few years ago with 450s. i was already running them at around 300whp and very high duty cycle. with the spike i put them well over 100% duty, leaned the shhhhit out of my motor and blew a sleeve apart.

honestly just get a bigger injector, much better to have room to spare. if you go with 450s, please please set a boost cut

 

im going to bump up the fuel pressure to 50psi to help it out a bit. hoping to make some high 200hp. maybe 250-300 will be okay for my street dd car.

 

Increasing the fuel pressure will not help the fact that the duty cycle is already overmaxed at 270whp with those injectors. You just stress the lines more.