Fuel pressure riser??

[JohnnyM]

Anyone got one and are they worth the price. I have an intake, headers, aem underdrive pully. fullly custom exhaust and msd ignition. Want a little more juice.. I know it's also universal so when I do an engine swap it would be easy to transplant..

[NC_Rex]

they replace your stock FPR on the fuel rail. Several places make them. They are really only for fine tuning. It's something that you use in conjunction with everything else to balance out. It's not like adding more fuel and getting more power....and secondly you need feedback form the engine to see if it's helping and a way to see the results. The FPR is usually something you set to stock and have so when everythings all finished and you have your bolt-ons done...you can take it to a dyno and have someone fine tune the timing, overlap and fuel settings to make more power.