What Fuel Pres. should i use?
07-04-2011, 10:33 PM
#5
base FP is also determined by how much boost you are running.
Plenty of graphs showing that past 70psi, Walbro's really fall off with regards to flow. So if you are at 50psi base and run more than 20psi, you could be asking for trouble.
I personally run low 40s BFP. 50 is just fine
Plenty of graphs showing that past 70psi, Walbro's really fall off with regards to flow. So if you are at 50psi base and run more than 20psi, you could be asking for trouble.
I personally run low 40s BFP. 50 is just fine
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07-05-2011, 04:59 AM
#7
I recommend 43.5psi base with no vacuum/boost, which is common/standard 3bar base fuel pressure. This means fuel pres will be in the 30s at idle, and 63.5psi with 20psi boost.
There are a few occasions where I will be intentionally have it higher/lower (such as running high fuel pres on a setup with plenty of fuel volume/pump availability but small injectors), but for a normal setup 43.5psi base fuel pres.
There are a few occasions where I will be intentionally have it higher/lower (such as running high fuel pres on a setup with plenty of fuel volume/pump availability but small injectors), but for a normal setup 43.5psi base fuel pres.
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07-07-2011, 07:52 AM
#10
what hal said. this is what i run on all my cars. especially if you input "injector flow" in whatever ems you have, you set the pressure at what the flow of your injectors is rated at. if not your injector flow will be incorrect.
jacking up the pressure is (usually) just a band aid. The right components with enough flow won't have this issue.. these aren't honda civics, do it right.
jacking up the pressure is (usually) just a band aid. The right components with enough flow won't have this issue.. these aren't honda civics, do it right.
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