Joined
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3,701 Posts
Short story..
If your A/F ratio with the smaller injectors was fine at that power level, you don't need new injectors.
Long story..
If your A/F was close or you are reducing timing or something to make it "safer" the larger injectors could be an improvement after a tune. Running a little lean and with more timing can make more power but it comes at the increased risk of pre-ignition, specially with a non inter-cooled SC. That being said, with the larger injectors on you could actually lose some HP but you could have a safer tune. You could lean it out a little and gain it back but your net gain would be nothing.
The decision to get bigger injectors really depends on the duty cycle of your current injectors at your max power and your A/F or if you plan on adding things to make even more power in the future that those injectors will not support. New injectors themselves will not add power.
Do you have an FMU or what is your base feul pressure? 285RWHP seems like a lot for 19# injectors.
If your A/F ratio with the smaller injectors was fine at that power level, you don't need new injectors.
Long story..
If your A/F was close or you are reducing timing or something to make it "safer" the larger injectors could be an improvement after a tune. Running a little lean and with more timing can make more power but it comes at the increased risk of pre-ignition, specially with a non inter-cooled SC. That being said, with the larger injectors on you could actually lose some HP but you could have a safer tune. You could lean it out a little and gain it back but your net gain would be nothing.
The decision to get bigger injectors really depends on the duty cycle of your current injectors at your max power and your A/F or if you plan on adding things to make even more power in the future that those injectors will not support. New injectors themselves will not add power.
Do you have an FMU or what is your base feul pressure? 285RWHP seems like a lot for 19# injectors.
