ID1300's or ID1700's (stock motor on e85) 620hp?
07-05-2017, 05:45 PM
#21
So your saying a single walbro 450 fuel pump will hold you back before id 1300cc injectors will? If you are i'm saying you are incorrect base on personal experience.
does experience not mean anything to you??? look at all the people that run id1300 cc injectors and you will know they max out on e85 in the upper 500'swhp. now look at all the people running a single walbro 450 on e85 and countless of them are deep in the upper 600'swhp and the low 700's. wouldent that mean a walbro single 450 fuel pump supports more power than 1300cc injectors??
does experience not mean anything to you??? look at all the people that run id1300 cc injectors and you will know they max out on e85 in the upper 500'swhp. now look at all the people running a single walbro 450 on e85 and countless of them are deep in the upper 600'swhp and the low 700's. wouldent that mean a walbro single 450 fuel pump supports more power than 1300cc injectors??
How are you assessing that in your experience the car is out of injector before pump?
07-05-2017, 05:57 PM
#22
Lol what?
Going to have to call you out on some stuff here. Four ID1300x's at 50psi flow 5,780 cc/min. One Walbro 450 at 70psi (total system pressure) only flows ~4,900 cc/min. Assuming you aren't running a voltage booster on the pump, you tell me which is the limiting factor there. Something doesn't add up.
OP - If you are wanting to safely make 600whp+ you need to step up to the ID1700x's. Mine definitely doesn't idle at stoich on 93, but its far from undriveable. Tuner plays a HUGE role in getting them to idle and drive well.
would the 1700x injectors handle 700-750hp or would I need to upgrade to the ID2000's?
07-05-2017, 06:07 PM
#23
Our calculator is VERY accurate. Put 8 in for cam aggressiveness (its really more of an overall engine efficiency rating):
Fuel Flow Calculator - Injector Dynamics
07-05-2017, 06:18 PM
#24
If the 450 pump's output didn't fall off a cliff (in reference to increasing pressure), it would work fine I think.
At 100psi the 450's output is less than half than it is at 30psi.
2 bosch 044 pumps would work a lot better with the id1300 at high pressures.
At 100psi the 450's output is less than half than it is at 30psi.
2 bosch 044 pumps would work a lot better with the id1300 at high pressures.
07-06-2017, 05:29 AM
#25
Most people here aren't going to be getting close to a 100psi pump pressure, but you are correct. Actually if its an older 267 pump it literally won't flow lol. The internal relief is at ~95psi. If we take into account the example being used in here of 20psi boost and 50psi base (70psi pump pressure) then the two 044's flow ~7,500 cc/min and the single 485 flows ~4,900 cc/min.
07-06-2017, 07:23 AM
#27
Not at all. You just need to see what the pump flows at "x" amount of pressure. The pump has to account for base + boost pressure, whereas the injector only cares about differential pressure. As long as you are using a rising rate 1:1 regulator that pressure should remain the same as base pressure. Any injector manufacturer SHOULD be able to tell you what the injector flows at any of the operating pressures, and most pump information is available as well. With all electric pumps (minus our upcoming brushless pump) flow will always fall off as pressure increases.
07-06-2017, 06:11 PM
#29
They will literally revolutionize the fuel pump market. Through a ridiculously awesome control box it will flow 670lph with as little as 10v AND I believe we had it up past 100psi. Think about that for a minute.
07-06-2017, 08:07 PM
#30
I'm sure that will cost more than some of us are willing to spend unfortunately.