Hi Scotty, love the channel, would appreciate your comments on an issue I am having with my car. 

I have a 2005 Lexus Rx300 which has covered 127,000 miles since new. Has been serviced every year. I have owned it for two months.

Start sounds rough. 

Live data from cold at idle shows:

Long fuel trim1 = -10.1 STEADY

Short fuel trim 2 = 0 up to 2 fluctuating 

Long fuel trim 2 = - 10.1 Steady

Then when warm after 30 mins or so at idle

Short fuel trim 1= 3.9 up to 4.7 fluctuations 

Long fuel trim1 = -7.8

Short fuel trim2 = 6 to 8 fluctuating and slowly creaps up as the car gets warmer after 40 mins was showing reading of between 7.8 and peaking at 9

Long fuel trim 2 = -7.0

Maf = 0.438

TP = 16.1

Load_PCT = 15.3

ETC (f) = 203 

Engine idles constantly around 700 rpm even when warm. 

 02 sensor perhaps?

There are no fault codes.