s300 v3 sensor issues?

[decdec]

Hi,

currently have a s300 v3 in a p28 for a turbo b16, i am experiencing a strange issue where on cold start the s300 is reading 150deg for IAT and ECT:

https://imgur.com/a/l1LBmuj

This is preventing the fuel pump from priming and being able to start the car.
However If i leave the ignition on for 10-15 minutes eventually the sensors start reading correctly, the fuel pump primes and the car starts and drives as normal.
once the car is warm if i turn the car off and on it operates as normal and i cannot reproduce the issue again unless the car has been sitting for a few hours.
I am not an auto electrician an do not have access to the person who tuned this car, can someone give some advice on how i would go about diagnosing this issue.
The car also has a burton cop kit installed so just swapping ecu's around is not that easy and i do not have access to another one to test anyway.

Thank you.

[Spunkster]

IT could have something to do with what has been modified in the ECU. Have the capacitors in the ECU been replaced?

[decdec]

i have no idea but probably they have not.

[Spunkster]

I would recommend that you replace the capacitors before doing anything else.

https://www.hondata.com/products/access ... acitor-kit

[decdec]

ok will do and report back