Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

Do I need a pump?

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Old 09-01-2009, 12:24 AM
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Default Do I need a pump?

I have a stock fuel pump. With a ms4 and heads I haven't been on the dyno to see the air fuels. I thought the ms4 peaks at 6800 but at 6500-6600 the cars stops pulling and won't pull any more rpms. So does that sound like pump or is it just done at that rpm thanks...
Old 09-01-2009, 10:19 AM
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Can not answer for sure without airfuels or a pressure monitor to know what is going on. But you are prob making plenty of power to over tax the stock pump and injectors

I would rec.

Fuel pump and wiring harness $200
30# injectors $250

Nate




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