SR20DE Starting Issue

[hvp014]

Hey whats up Nico,

Just bought an SR20DE swapped shell. Guy said it did run but he needed the MAf and injectors for his KA-T. Ordered a new MAF and injectors, off a KA24DE. Cleaned the old gas out, new fuel filter, NGk plugs, and walbro fuel pump.

He's my issue though, every time I crank the car is catches, spits for 2-3 seconds then goes back to just cranking then as the rpms drop it catches again, spits for 2-3 seconds and the cycle continues. I understand the ECU sends more fuel when you first start, that's what i figure the initial fire is. But I can't understand why it loses it signal. Throttle has no response, and spark is strong and good. Have great fuel pressure at the rail as well.Any tips?