Quote:
Originally Posted by Joshinator99
If your low side drops off, it will then let the high side drop off. When the HPFP cannot keep up, it loses it big time! The rail pressure will simply fall off a cliff…. What was your low side holding at? What did your IPW look like? E55 seems like a lot for a stock fuel system LT4.
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At WOT, low side pressure = 62 to 70psi.
IPW average bank 1 & 2 = 5.3ms
Ya I understand its too much E, I wanted to find that limit. But breaking a $1000 HPFP was not something I thought was going to happen. Could the pump be over-spun? Could I be asking too much of the pump?
High pressure fuel at WOT ranging from about 2850-2950, Then around redline it spikes to 3200psi sometimes, not all the time.
Car barely starts right now, cranks for like 20 seconds then starts and my High pressure fuel is at 50-60psi. The HPFP is broken I guess?