Car stalls at stop signs/traffic lights

[DSMLaserTurbo82]

HELP

I just did a motor swap with a red top 4G63 and used the american intake manifold and throttle body.
Ive replaced the o2 sensor and put on a 3" Turbo back exhaust with 3" cat. The manifolds got 3 small cracks in it.
I can start the car up fine and it idles smoothly, I can put it in first and get goin but when i stop at the end of my driveway/stop sign/ traffic light. It starts to bog and stammer and stall out, if i give it a little gas, itll stop, but otherwise it stalls out. I love my laser and i wouldnt want any other car!
Please Help

 

[gunnmetal]

change your manifolds
you leeking presure i think i mean boost that might be why

 

[Megags]

I disagree, check your isc. Sounds like it can't keep up with the motor when you aren't opening the throttle plate to let air in. When stopped or when started up it is fine right? But when you move it stalls, indicating that it can't keep up with the change in airflow.

You may also want to clean your tb and manifold. to help out airflow.

 

[DSMLaserTurbo82]

Thanks ill clean it out and check the isc for problems
Ill post with more info

 

[ericismyname]

this happened to me alot i cleaned the thortlle body. but now it still happens a tiny bit, i think i need to check the ISC motor. and replace the ECU caps.:thumbdown