Installed new fuel pump and now stumbling around 5k RPM

[byk24mr2]

Any insights from looking at the calibration and log? This is on a K24 MR2 Spyder.

I know the idle is low- I need to adjust the idle stop screw.

Calibration and log file attached.

test 1.kdl

Dyno Tune.kal

[Spunkster]

Does it do this if you put the original pump back in?

[byk24mr2]

I haven't swapped it back, but the reason I put the new pump and filter in was the original (MR2 Spyder OEM) starting running lean under load. It was actually around the same RPM as the stumble here, but I could see the AFR run lean. I had run a tank empty and then got on the track, so I assumed the original pump and filter were shot. The new pump is a DW265.

[Spunkster]

Check fuel pressure when this happens.

[byk24mr2]

Will do- thanks. I did check fuel pressure after the new pump/filter in the garage, but not while driving. It looked fine, but there was no real load.

I'll recruit a friend to watch the gauge later this week under load.