s13 swapped RB25DET will not stay started

[wild streak]

my friends rb25det swapped s13 has been running good since the swap was completed 3 weeks ago, yesturday he drove it home from work and parked it then tried to start it today and all it will do is start and act like it is going to run but immediately just shuts off then it will just turn over, if you let it sit it will do it again and act like it is going to start but then shut off. we have swapped ECUs, checked the fuel pump made sure it was getting gas, checked connectors, checked for vacum leaks. I dont know what to do we are stump and need some help anything would be appreciated

[Sileighty_85]

Check ECU for Codes.

Might be MAFS or Plugs

[santi5222]

icv might be staying open to long

[wild streak]

I found the problem as soon as i disconnected the maf it started and ran fine but as soon as i plug it back in the engine just dies, is that a sign of a bad maf?

[blingbling]

Uh yes. Haha

[wild streak]

LOL I just wanted to be sure

[mando240]

hey guys srry i know its a month old, but i have THE SAME EXACT issue, But i disconnected the maf and still does the same thing.

History on swap.
RB25DET S2
ISIS Intake Manifold and Q45 TB with the water lines connected also.
FULLY rebuilt everything on it new and done perfect on point. Car ran great when first turned over for about an hour on idle. It sat over night and today the car turns on on the first turn over and it will run around 30 seconds when cold and shut of. Not like when its out of fuel but just shuts off like if u cut the power.
Right after it will turn right on again and last even less time. We let it sit for a bit and it restarts the issue.

Can anyone help me on what it might be.

[Sileighty_85]

Have you checked ECU for codes?

[mando240]

I guess it had something to do with the turbo timer, because i turned it on and the car stayed on perfect.. and has not given any problems at all. Whith the turbo timer off the car just shuts off after 30 seconds.