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Message: [QUOTE="Charles, post: 38992, member: 103"] Gassers can't run away, lol. You shut the throttle and it goes fat and dies... Worst case you turn the key and the spark ends. Secondly, on a gasser the fuel pressure is the "injection" pressure as well. So with the fuel and air pressures being very, very close to one another it actually has a [i]measurable[/i] effect on the pressure delta across the nozzle, and has a MASSIVE effect on the injection quanity, all else constant. So the pressure must be referenced to changing manifold pressure. On our trucks, first off, we can't stop an engine that is being fed diesel fuel without cutting off the air. If a large pocket of diesel pooled, say in the intercooler, before it got picked up and started running away, you could kiss it. 7000+ rpm here you come. Lastly.... we don't [i]need[/i] to boost reference our fuel. The reason gassers do it simply does not apply. Our injection pressure is EXACTLY the same whether our delivery pressure is 50, 60, 70, 80, 90, 100...... so on and so forth. We inject 0.00 additional mm of fuel with any additional delivery pressure as well. On a gasser, you up the delivery pressure 10psi and you just made a MASSIVE change to injection quantity. Especially with a larger injector. It simply doesn't happen here. Not applicable in that way. So the comparisons to gassers mean nothing. The only justification for doing it on one of these trucks is pump life. And with a brushed pump.... that might make sense. Luckily we have brushless pumps now though. So we can just set the pressure where we want it and leave it alone without any connections between our fuel system and our intake manifold to potentially rev our engine out of sight without any benefit otherwise. [/QUOTE]