Low idle and sputters alot

[1995 brian]

So my 97 gsx is having a very low idle issue and it sputters alot during idle. Threw a check engine and 5 codes came up.
P0110- iat sensor circuit malfunction
P0100- maf or vaf a circuit malfunction
P0325- knock sensor 1 circuit malfunction
P0105- map/BARO circuit malfunction
P0510- closed throttle position switch.

Any ideas where to start.?

 

[mikgsxx]

The last time my gsx threw all those codes, the ecu was bad. Try popping in another good ecu.

 

[1995 brian]

So i disconected the isc while it was idling and it didnt change the low idle or the studdering also i notice the turbo has quite some shaft play in and out and it smokes white from the tail pipe.

 

[TeacherCreature]

White smoke from a tail pipe isnt good!

IAT can affect idle, so can maf

Does the car run ok or smoke under load ?

 

[1995 brian]

It runs alright and it smokes when you press the gas. Could it be a blown turbo? Another thing is all these issues started right after timing job. But all marks were double checked.

When i disconect the maf the idle gets worse so i dont think its the maf because i replaced it with another one i had.

So i went ahead and pulled everything apart to check timing and it was dead on im lost idk what to check.