I have a obd-1 GSR engine with a t3/t4 57 trim @ 11psi. I havent finished the engine build yet and Im wondering if these dsm 450cc fuel injectors will be enough? What kind of power can i expect tuned on uberdata?

 

probably high 200s or really low 300s. depends what dyno and what you consider acceptable duty cycle and/or AFR.

 

properly tuned they can handle just over 300whp

 

great thanks guys

 

I was always told that there right around 300whp. I would like to know the same thing??

 

300whp if you want to run them at 100%

 

450 i would place them at 250 mark u do not want those thing 100% all the time man

 

does it not also depend on the fuel pump ?

with a walbro 190 or 255 would the injector duty cycle be shortened due to fuel pressure?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlackCRX &raquo;</TD></TR><TR><TD CLASS="quote">does it not also depend on the fuel pump ?

with a walbro 190 or 255 would the injector duty cycle be shortened due to fuel pressure?</TD></TR></TABLE>

yes, higher presure can let you run lower duty. there are tons of variables so there really isnt one specific number you can give for any one injector. Thats why you tune the car.

 

Just from my personal experience on a Superflo Dyno using DJ correction factors, they can flow enough to support 330 whp at less than 80% DC if you run 60psi of rail pressure on them and still maintain a nice safe AFR of 11.5-11.3:1.