KA-T runs but has some issues. Dyno inside, please help

[coldfire07]

To begin, here's the dyno.

http://www.coldfire07.com/forums/dyno.jpg

Here are the mods.

RS*R GT-2 80mm exhaust
Koyo 2row aluminum radiator
T3 Flanged Manifold
ACT 6-puck clutch kit
SARD Blow off valve
R/C Engineering 550cc Injectors
Walbro fuel pump
24" x 12" x 3 FMIC
TiaL .38mm wastegate (.5 bar spring)
Garrett T3/T04E .57trim .63 a/r /w DP Flange
Fuel pump hardwire kit
EGR Blockoff Plate
z32 MAF
Enthalpy Tuned ECU
NGK BKR7E11 gapped to .030"

I bought the Enthalpy ECU used but I am told it was tuned for 550cc/z32 MAF.

We checked the timing and this is right at 20. I did at a pull at 15 and the same thing happened, though a bit less pronounced. Mechanically, everything seems to be in good shape. I'm really not sure what's happening here.

Thanks in advance.

[s13driver]

did you forgot to list injectors or are you still using stock 270cc ?

[coldfire07]

I didn't forget to list them.

R/C Engineering 550cc Injectors

[TheSparo]

wtf is going on @4k? looks like your engine dies then picks up a couple rpm later... doesn't look too much fuel related because the afr dosn't seem to have much effect on it