I'm having a bit of an issue, and I'm not sure if it's tune or mechanical.
I'm targeting 5525hpa (80psi) in the lpfp pressure table while under load. I have a regulator without pressure reference set to 80psi. Dual 450HPs in tank feeding to the stock filter with the factory regulator removed and blocked off.
The second pump is controlled by JB4, which turns it on around 11psi of boost. In the log, shortly after it's brought on, fuel pressure hits 80psi, then winds up down around 70psi at 7krpm. This pull isn't exactly running a heap of boost, so It's surprising it's dropping as it is. Is this the correct table to adjust the low pressure target, or are there others I'm missing? It started raining on me, or I'd just go hook up a portable scope to the factory pump and see what it's doing under load. I think I'm leaning towards a mechanical restriction at this point, but I didn't think the oem filter was this bad? 78k miles on the clock, don't think it's beenr eplaced.
Thoughts?
I'm targeting 5525hpa (80psi) in the lpfp pressure table while under load. I have a regulator without pressure reference set to 80psi. Dual 450HPs in tank feeding to the stock filter with the factory regulator removed and blocked off.
The second pump is controlled by JB4, which turns it on around 11psi of boost. In the log, shortly after it's brought on, fuel pressure hits 80psi, then winds up down around 70psi at 7krpm. This pull isn't exactly running a heap of boost, so It's surprising it's dropping as it is. Is this the correct table to adjust the low pressure target, or are there others I'm missing? It started raining on me, or I'd just go hook up a portable scope to the factory pump and see what it's doing under load. I think I'm leaning towards a mechanical restriction at this point, but I didn't think the oem filter was this bad? 78k miles on the clock, don't think it's beenr eplaced.
Thoughts?
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