so im new to the lexus world and have a few things to learn but i would like to figure out why my car is missing at idol but when driving it runs fine and its not a dead miss so and suggestions on my problem and how to fix it and has full tune up and when i unplug the mas it doesnt change the way the car runs ? not sure if thats right or not

 

Check for vacuum lines cracked or missing. Check tps and the iacv. Clean the throttle body and report back.

 

will do and not to sound soft or anything thanks for not being a complete **** about it lol

 

Especially check that IACV. I cleaned mine out and it purrrs

 

No CEL? I assume not, do what 1JZPWRD said to do and report back! Sounds like the MAF or TPS, maybe even the IACV.