510RiceRocket

this might seem a little silly but can someone explain how FPR is helpfull? i might be running zex shot soon and want to upgrade my fuel system so wanted to know a bit more about a FPR before i go out and buy it. i tried search but out of 25 post none were helpful, thanks

BoYgUaN

fpr....fuel pressure regulator.....it senses how much gas want and then sends it at a higher or lower pressure....

correct me if i am wrong guys

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typeshlude

Fpr's can't sense how much fuel your car needs. Its only function is to allow you to raise or lower the fuel pressure.

The fpr may be helpful if your in lack of fuel while using the nitrous. But the stock fuel system is capable of handling the needed fuel of the zex kit, so it is not necessary to get one.

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510RiceRocket

hey, thanks for the response, but i know it regulates fuel pressure, what i want to knwo is if it will be helpful w/zex or do i even need it? i'm skeptical bout pros & cons because some people have complained about thier car running to rich or horrible gas mileage after installing a FPR. anyone care to enlighten me..

makavelli1227

check the nitrous forum...u will get lots more help from there than here

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typeshlude

People are running rich/horrible because they are running too high of a fuel pressure.

The fpr may be helpful if you can determine if while your on the bottle, your in lack of fuel or in excess of fuel. The fpr will allow you to rise/lower the pressure a little to tune the sytem. I recommend getting on a dyno with a wideband to mess with this though. You do not want to run lean while using nitrous.

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510RiceRocket

thanks for the response typeshlude, i somehow missed your first post earlier, anyhow i'll PM you lil later on if i have any questions after posting in Nitrous form