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Mine put down 390whp, on the 8 psi pulley with no supporting mods, then put the 10 psi pulley, again no other supporting mods and it put down 400whp, added 2 psi but had to retard timing 5 degrees to not get knock, LT headers, O/R x pype, carbon driveshaft, boost-a-pump and water/meth in the...

So theres no one that upgraded their fuel pumps here?

Planing on a 500whp procharger build on E85 the car is at 390whp on 93 oct fuel right now, is the fuel pump from the v6 the same as the v8? What options are there? I ordered a walbro 430lph to discover it would not work with the stock system. what is the stock pump limit?