hi im new to these audi cars and i want to learn more about them.

my 2000 a4 is currently chipped with a apr chip and has a k04 turbo. the setting for the chip is for 22 psi and 93 octane. from what i understand to change from stock program to apr program you use the cruise control to change settings. well my questions are...seeing that the k04 turbo is a internal turbo when i change programs will it automatically boost to 22 psi and not the stock psi or do i have to get a boost controler to do this? next question is if the program is set to the cruise control does that mean that i cant use the cruise control on the high way?

ive search the forum and found nothing.

can someone tell me how to check codes also