I have a stock LS swap I just swapped in my EK. was planning to do a lsvtec turbo but the motor wont idle right stock. as of right now, its a stock motor wit no mods. obd2 Motor with obd2-obd1 ls ecu. it will start up and idle fine at around 850rpm for like 1min then it would drop down below 500rpm and it starts bogging then it goes back to a stable idle. it keeps on doing that when I start it up. whats wrong wit the motor and how do i fix it?

 

Are you driving the car? Without some driveability info, it will be hard to do more than suggest random tests. IMO eveyone who swaps their motor should check the spark, fuel pressure, compression.... pretty much everything just so you know exactly how your engine is doing and where you're starting from. Often, an idle problem after a swap is because of something not set right- like the idle adjustment screw for example. If everything was swapped and set correctly, compression and spark are common causes of rough idle.