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Do I need a fuel pump for stage 2 2013 wrx?

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Do I need a fuel pump for stage 2 2013 wrx?

Old 08-04-2013, 08:08 PM
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Do I need a fuel pump for stage 2 2013 wrx?

I was wondering if i would need to upgrade my fuel pump for my 2013 wrx. I read some forums and they said you don't. So i'm just making sure if it's really recommended.
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Old 08-04-2013, 08:13 PM
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are you just going to be running an OTS cobb stage 2 map? If so, you do not need a fuel pump. If you plan on getting tuned you probably will, but I would talk with your tuner first and see what their preference is.
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Old 08-04-2013, 08:19 PM
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I have tuned them both ways on the newer wrx's the upgrade pump does help with the fueling on the car and in turn will make more power.

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Old 08-04-2013, 11:49 PM
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From my experience tuning (lol, 3 cars!) the injectors seem to run out of room before the fuel pump reaches it's limit.

2 x Cobb AP
1 x Hydra EMS
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Old 08-04-2013, 11:55 PM
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Yes that is true but if you at least have a fuel pump that flows more than the stock pump your injector won't max out as soon. But you can still max them out with a upgraded pump too.
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Old 08-05-2013, 12:17 AM
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It wouldn't hurt
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Old 08-05-2013, 12:59 AM
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Originally Posted by Poweredbysnail View Post
Yes that is true but if you at least have a fuel pump that flows more than the stock pump your injector won't max out as soon. But you can still max them out with a upgraded pump too.
Very true. I maxed out my stock injectors with the stock fuel pump somewhere around 3500-4000 rpm, where as now they max out around 5000 rpm on the Aeromotive 340 lph pump. The injector duty cycle runs about 90% up until 4500 rpm where it begins to climb.

Thanks Snail!
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