Modification of the Mazdaspeed Engine and Volkswagon Engines far beyond OEM power levels requires an additional volume of high-pressure fuel in order to avoid "fuel cuts" and "ZZB" situations especially in the midrange!
 
STAGE 2 ON BACK ORDER - WILL TAKE 1 WEEK LONGER TO BRING IN
 
Stage 1 - Piston has over 55% more area than OEM (superior than Autotechs HPFPs)
Stage 2 - Piston has over 75% more area than OEM (Perfect for 600+HP on the VW, MPS will be limited to hardware but HUGE benifits!)
Stage 3 - Piston has over 90% more area than OEM (used on our very own Mazdaspeed 3 CYBORGMPS and we got 350kW+ without running out of fuel)
 
See our compatbility tab!
 
In many cases we see the factory fuel pump begin to suffer from pressure loss.
 
The limitation of how much volume of fuel the high pressure pump can flow is dependent upon the volume displaced by the pressurizing cylinder inside the pump.
 
This upgrade replaces the internal parts that are responsible for pressure and volume of fuel that reaches your injectors to meet the demands that come for higher power.
 
Tolerances involved, the final surface finish on the piston inside the fuel pump is so critical that it can be damaged by touching them with bare hands.
 
The tolerances between the piston and the new sleeve the piston rides in can only be measured by a machine which uses air volumes to measure the part clearances to within microscopic levels.
 
Features:
Piston has over 55% / 75% area than OEM
Piston head optimized for ideal fuel flow direction
Piston surface hardened and heat treated in 3 different stages
Uses OEM-style spring keeper, not a higher rated one that will prematurely wear the cam follower
Even a standard car will see benefits from running these internals!!!
Laser marked for better traceability and protecting from fake replica
Pump housing O ring made of Viton
Each HPFP internal kit is sold as a rebuild kit only not the whole HPFP Unit
 
Shipping varies from 4-10 days depending on stocks as well as cam follower