2003-2004 boxster S with abs/psm error

[Paseb]

Guys, on my 2004 boxster S race car, i keep having on the dash on startup abs/psm error failure.

sometime, i need to recycle the car 5-6x to get it working. That's before the race start. Its quite annoying.

if not, abs wont work.

anyone had this ?

was told i need to install abs module off a car with no PSM. but im not 100% sure what other parts i need or actual part number.

any help appreciated

thx