Upgrading fuel pump - which size to get?
16 January 2017, 11:12 AM
#1
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Upgrading fuel pump - which size to get?
Hi all,
I'm looking at taking the Wrx to around 330hp and was wondering what size fuel pump I should buy? As I'm aware that a 255 pump is more than enough capable for the power. However if I went for a 290 or 340lph pump instead would there be any negatives? As it just saves time in the future if I need to upgrade the 255 pump again due to more power.
Is it possible to just upgrade the fuel pump without a fuel pressure regulator?
Kindest regards,
Subaru Collector 555.
I'm looking at taking the Wrx to around 330hp and was wondering what size fuel pump I should buy? As I'm aware that a 255 pump is more than enough capable for the power. However if I went for a 290 or 340lph pump instead would there be any negatives? As it just saves time in the future if I need to upgrade the 255 pump again due to more power.
Is it possible to just upgrade the fuel pump without a fuel pressure regulator?
Kindest regards,
Subaru Collector 555.
Last edited by User 21721; 16 January 2017 at 11:13 AM.
16 January 2017, 11:35 AM
#2
Hi all,
I'm looking at taking the Wrx to around 330hp and was wondering what size fuel pump I should buy? As I'm aware that a 255 pump is more than enough capable for the power. However if I went for a 290 or 340lph pump instead would there be any negatives? As it just saves time in the future if I need to upgrade the 255 pump again due to more power.
Is it possible to just upgrade the fuel pump without a fuel pressure regulator?
Kindest regards,
Subaru Collector 555.
I'm looking at taking the Wrx to around 330hp and was wondering what size fuel pump I should buy? As I'm aware that a 255 pump is more than enough capable for the power. However if I went for a 290 or 340lph pump instead would there be any negatives? As it just saves time in the future if I need to upgrade the 255 pump again due to more power.
Is it possible to just upgrade the fuel pump without a fuel pressure regulator?
Kindest regards,
Subaru Collector 555.
16 January 2017, 01:39 PM
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Yeah exactly, where it doesnt cost that much more it just saves me time of upgrading it again if I ever wanted more power. As long as it will run fine at low power with the larger fuel pumps.
16 January 2017, 06:40 PM
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Is a fuel pressure regulator needed? Or can I just upgrade the fuel pump and filter?
Kindest Regards,
Subaru Collector 555.
Last edited by User 21721; 16 January 2017 at 06:42 PM.
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17 January 2017, 10:24 AM
#8
A larger pump will not give you worse fuel consumption. LOL. Brilliant!
The injectors will only use what the ECU tells them to use and what they are programmed to use for the revs etc. The fuel pressure regulator will help to regulate the pressure at the fuel rails and the pump will just make sure everything is at a good pressure. Putting a 3340lph pump onto a 350bhp will be just fine. No problems at all.
The injectors will only use what the ECU tells them to use and what they are programmed to use for the revs etc. The fuel pressure regulator will help to regulate the pressure at the fuel rails and the pump will just make sure everything is at a good pressure. Putting a 3340lph pump onto a 350bhp will be just fine. No problems at all.