Searching For The Best Performance Fuel Pump Upgrade

We rank the most popular performance fuel pumps using data collected by Turbo & High Tech Performance magazine and their amazing performance fuel pump test to see which was best.

In their tests they measured current draw & fuel flow in 5 PSI steps from 45 PSI up to 100PSI.

The table below is the raw data from that article compiled into one table.

Part 1 of the original test is here http://www.superstreetonline.com/how-to/engine/1404-fuel-pump-shootout/

Part 2 is here http://www.superstreetonline.com/how-to/engine/1405-fuel-pump-shootout-part-2/

The key takeaways. With regards to efficiency and power handling, there is a clear winner and that is the Walbro GSS340/341/342 fuel pump.

This fuel pump gives a huge increase in fuel flow over the standard fuel pump on most cars while drawing around the same amount of current. You can use the car’s original wiring and the pump is a drop in replacement for the car’s original fuel pump. It does not get easier than that.

If you are happy to rewire your fuel pump with thicker cabling and you are happy to add some extra plumbing to your fuel system so you can fit an inline fuel pump, the Bosch 044 fuel pump came out top for turbo vehicles

For normally aspirated engines the Aeromotive and the CNT Racing fuel pumps came out on top, and both these pumps are designed to be drop in replacements (but check if this is true for your vehicle if you are not sure)

There are a few performance fuel pump tests on the internet but in my experience they do not measure the current draw and this is crucial, especially if you are wanting to use your car’s factory fuel pump wiring.

Some things to note. These pumps are designed for fuel systems which designed to deliver fuel at 45PSI, if you have a fuel system which injects fuel directly into the combustion chamber, these fuel pumps are not for you.

Performance Fuel Pump Comparison Test – Winners

Factory Wiring Drop In Replacement – Walbro GSS340/GSS341/GSS342

Turbo with wiring upgrade and extra plumbing – Bosch 044

Turbo with wiring upgrade, drop in replacement – CNT Racing/Aeromotive Stealth 340lph

Normally Aspirated Engine, with wiring upgrade – CNT Racing/Aeromotive Stealth 340lph

Notes: RC Engineering noted in the test that on paper the non name and fake fuel pumps gave good figures, however they noticed that the fuel flow through the pumps was not stable even at constant voltage and this could lead to fuelling problems especially if the pumps were being run close to their limits, their advice was to stick to the genuine branded fuel pumps which all gave steady fuel flow.

Performance Fuel Pump Data