2.4L GM S/C Injector Duty Cycle - Tuning Forum

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2.4L GM S/C Injector Duty Cycle
Saturday, December 30, 2006 11:21 AM
Just posing a question out there for those still running the 310cc injectors on their S/C kit - what is your duty cycle at?

I'm toying with the notion of shelling out some cash to pick up larger injectors, but with all the other projects on the go and the fact that once the car is tuned, I'm done with modding it, I want to assure myself if I really do need to get larger ones or not.

Goal is to get the car to hit 220whp. Supporting mods are being done right now to ensure this.

Re: 2.4L GM S/C Injector Duty Cycle
Tuesday, January 02, 2007 10:48 AM
not sure what my DC was but my air fuel was low 13's on my wide band , with 50psi base fuel pressure

i went to the 2.0 lsj injectors (36lb) and droped my base pressure to 30 psi , and now my afr is mid 11's







Re: 2.4L GM S/C Injector Duty Cycle
Tuesday, January 02, 2007 4:21 PM
Did you have to make any conversion things to use them?


Chris


'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08

Re: 2.4L GM S/C Injector Duty Cycle
Tuesday, January 02, 2007 4:27 PM
^^you have to notch out higher bolt holes for the rail to seat properly for the 2.0 injectors. Cant remember which thread its in at the moment, but its in the boost forum somewhere.
Re: 2.4L GM S/C Injector Duty Cycle
Tuesday, January 02, 2007 5:54 PM
i actually had spacers made to fit them and still had to mod my fuel rail some

paco loco had made them , not sure if they kept any cad drawings or measurements

you just need to lower the fuel rail , since the injectors are shorter








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