07 mazdaspeed 3 positive and negative ltft issues

[Kaleb T]

ENGINE/DRIVABILITY

Year/Make/Model:2007 mazdaspeed 3
Mileage: 163k on body 7k on built motor
Location: idaho
Concern: I'm having negative fuel trims when I'm at a moderate throttle not wot and I'm having positive fuel trims when cruising I have boost leak tested and smoke tested it no leaks found the original problem was losing fuel pressure during wot found out it was the prv and I also did the e85 safe rebuild kit for the hpfp from cork sport along with new plugs gapped at 0.26 im getting the positive fuel trims when 0.24 (4.52) load is applied and the negative when 0.45 (-8.74) load is applied and up.
DTC's: (please include descriptions) none
Modifications Built motor with Manley rods and pistons at 88mm Damond motorsport egr delete jbr fmic pipping Treadstone tr8 intercooler cst5 turbo ewg 17lb spring cork sport catless downpipe ultimate racing race pipe resonator and muffler delete Damond motorsport catch can vta cork sport balance shaft delete AutoTech hpfp internals.
ECU/Tuning Software: Cobb accessport v3
Tuner: Justin at freek tune
Is the concern intermittent? no
Can you duplicate the concern? yes
Recent Repairs: prv replacement hpfp rebuild kit and spark plugs

 

[Crazycanadian]

Did you re-tune it since fixing the fueling issues? Or reach out to contact Justin about it? Technically your total trims (short and long term combined) aren't bad based on the logs.. but they are splitting in an interesting way... Do you have catch cans setup?

I would be good to just hit data log and let it run for a 10 to 15 min drive cycle with your idle period mixed in.. Also make sure it's up to operating temp.. This helps see trends better and gives a better overall picture of stuff like this.. Even though you don't seem to have issues with WOT now.. get a couple pulls in during that log..