Datalogging to prepare for Cobb AP; low AFR and fuel PSI?

Abilor

Member
:
Mazdaspeed 3
Hey all,

Been awhile since I tinkered, but I just ordered a Cobb AP. Briefly, here are my poweradders:

CPE Nano SRI with amsoil filter
SU TMIC
TurboSmart BOV
Cobb Turbo Inlet
ITV22 denso plus
SU Test pipe.

When I get the unit, I am going to flash it with the stage 1 OTS with SF intake, and log to see how it goes. From there I will bone up on Accesstuner and adjust as needed.

A few questions:

I was logging last night, and I did a few WOT pulls. All looked good, except for one pull, where I noticed an instant where boost got to 18psi, the AFR fattened up to 9.6, and fuel psi dropped to 1260 psi. For the most part fuel psi was always 1550+, with 15.5 psi boost.

Is that split second with low fuel psi enough concern to jump up to a big boy fuel pump, esp. if I'll be running a stage 1 map with the AP? Even with a pig rich AFR?
 
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