That is a hefty chunk of change. I saw someone say the stock HPFP can handle about 15psi which is stock turbo max..? So my question is, whats a roundabout hp/tq number you max at with the stock pump? I think I'll do tunes and bolt ones til the pump in topped out then look at weight management.
I just finished this track season with an 11.36 @ 122.68 doing exactly what you described....full bolt ons + Meth + Dry Shot of Nitrous and some weight management (seat removal) with the stock pump.
Mods: GH turbos, GH IC, Hot Pipes, Alky Control 100% Meth with dual nozzles, Zex Safe Shot Nitrous, Full Exhaust (catless downpipes to double x pipes straight out with tips, no cats, no resonator, no mufflers all 2.5" stainless) Sp542 plugs .028, 3Bar Map, UPR DVCC, AirAid Intake, Dicunzolo Trans Mounts, Derale 10000 series Trans Cooler, PP Trans Cooler, H&R Springs, Mickey Thompson Sc-5 20x9 Wheels, 1" spacers, Continental Extreme Contact DW Tires.
On a mustang dyno @19 PSI without Nitrous it put down 463/569. Fuel pressure with Meth held at 2400 psi with this tune. Even then and all throughout tuning my tuner (AJP Turbo) told me to save my pennies for a pump. Later on I found the limit with the stock pump and meth with a dry shot of nitrous to be a 75 shot. It still handled it but fuel trims overall were leaner .86-.89. And anytime fuel pressure dips, goes lean(1.0+)causes knock you are pushing it too hard. I Datalogged my runs and I had a very small knock event of + .02. I even turned my meth volume way up to try to compensate. Fuel pressure dipped for a second with the hit of the 75 shot...it recovered but I was playing with fire. I immediately stopped tracking it. It would be a long walk back to VT from NH. At such a high power level....I don't want any knock. I conclude stock pump+Meth car or an XDI pump e30 car can both safely handle a dry 50 shot. Now a wet nitrous kit would prove otherwise.
So with an upgraded HPFP and LPFP it will take it to the next level. I'll find out what that is in 2020.
