3 bar fuel pressure regulator
#21
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Join Date: Aug 2005
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Dropped the fuel pressure to somewhere around 43-44 psi. The pitch of the pump increased quite a bit. My 96# injectors were rated 96 lb/hr at 3 bar, so I had them in the tune as about 110 lb/hr to match the 4 bar fuel pressure. I just turned the pressure down, changed the IFR table back to 96 lb/hr, and everything worked fine without having to tweak any of the airflow tables at all. Very simple At 5600 RPM and 10psi I'm still only seeing 51% IDC max, lol.
#22
High on diesel fumes
iTrader: (70)
At the identical boost level, RPM, and AFR my max before was 41%. Looks like it added about 10% to the duty cycle.
Question for those who have studied this....if I drop my fuel pressure by 25% but it only raises my IDC by 10%, does that mean I gained a significant amount of efficiency?
Question for those who have studied this....if I drop my fuel pressure by 25% but it only raises my IDC by 10%, does that mean I gained a significant amount of efficiency?
#29
Moderately Differentiated
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I am quiet surprised thunder you hadn't locked onto this much earlier. I have always contemplated doing it just see if the moto 60's were any easier to idle tune.