300ZX (Z31) Performance / Technical Discussions related to Turbo charging, Supercharging, Engine, ECU, exhaust, and etc. performance enhancements and Techical related.

is a rising rate fuel reg. a good mod?

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Old 03-13-2007, 06:16 PM
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is a rising rate fuel reg. a good mod?

is a rising rate fuel reg. a good mod? ... motorsport auto sells one for $269 and claims 10-15 hp
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Old 03-13-2007, 06:24 PM
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i found thatmods slowed down my AE and made the car perform poorly, so removed the k+n filter and the other aftermarket stuff and now my car is poifekt.....is yer fuel pump not working????? or are you just not going fast enough.........???????..
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Old 03-13-2007, 08:12 PM
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RR FPR's are designed to work on forced induction engines. For every lb of boost, the fpr raises the fuel pressure by 1, 6, 8, 12psi (or whatever the spec). Using it on an n/a motor is pointless.

As for you: unless you are running out of fuel @ full boost (usually above 12psi on a stock Z31T), you don't need to use one, nor would you benefit much from it.
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Old 03-14-2007, 08:39 AM
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stock FPR is a rising rate FPR already. Unless you have a reason to run more fuel, you won't get anything but worse mileage by using one.
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