Hpfp concerns

Mazi07

Greenie N00B Member
Year/Make/Model: 07 mazdaspeed 3
Mileage: 65-70,000ish ( bought used engine )
Location: Atlanta, GA
Concern: hpfp psi drops towards 600 and whole car jerks hard under easy acceleration and wot
DTCs:
Modifications: not entirely sure bought the car used 3yrs ago and he didn't tell me everything he did
ECU/Tuning Software: cobb accessport v3
Tuner: n/a
Is the concern intermittent? no does it in every gear
Can you duplicate the concern? yes
Recent Repairs: none yet
Correction:

i can attach the log tomorrow, but as far as i know i have stock internals for the hpfp and the idle psi is 400-500 then under normal driving its up towards 1,600-1,800 psi then if i go into a pull it will drop down to 600 psi or less and the whole car jerks hard. it even does it under normal driving conditions with no spicy driving tendencies. im new to the speed world and know ZERO about this platform and im trying to research everything i can but this issue has me stuck. thank you in advance
-chris
 

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