EP3 PRA K20A2:need checks and advise

[westindiis]

Hi all ,
This is my first post so i will do my best to be clear.

Car configuration:Grams 1000cc, RBC or RRB ( can't remember ) running E85,62mm ex and tegiwa Header 421.Stock motor,valve Clearance checked.
brand new wideband: Bosch 4.9.Kpro V4

I run the car without issues since i remove the CAI i suddently get a issues in WOT the car was too rich 9 and rattle specialy during Vtec
My tunner say it is not the root cause changing the CAI will not effect on the map and i trust him and seems logic.
So i replace the spark plug,check compression on each cylinder and make a leak test and everything was fine.
The cars run well now because i reduce the amount of fuel on WOT in the MAP.
Now i am not a mapper and learn by myself so i make coupe of run and adjust the MAP in VTEC ON/OFF in all degrees High and low tables.
I don't know what can cause a suddent rich car on WOT like that ...Maybe i do need to check my fuel pressure?
Next step will be to add a oil pressure on my Kpro directly

Second question
I would like to understand the S trim propose and the L.my feeling is to get all reaction or adjustement made.
Thank you a lot

[MondeCruel]

Hi,
Check your map values on the datalog, it is going up and down like crazy