Hi everyone! Got a bit of a problem with my S3 8P BHZ. On stock software, the car is running great, however when stage 1 is applied, HPFP starts to struggle hard and rail pressure drops massively.
Mods wise, car has a 3" downpipe with middle section, RAMAIR intake and red top coils. Fuel filter and cam follower have been changed along with the usual maintenance items. HPFP and PRV are stock.
So far I've received suggestions such as "lazy" O2 sensor, sending data to the ECU with a delay, injector issues and faulty PRV. What do you think?
Log: https://log.tunezilla.com/chart/688...DgEtAcMObKMOOJm0qw5l+wrfCrg/DoQN1wqhzSMKjAAAA
Mods wise, car has a 3" downpipe with middle section, RAMAIR intake and red top coils. Fuel filter and cam follower have been changed along with the usual maintenance items. HPFP and PRV are stock.
So far I've received suggestions such as "lazy" O2 sensor, sending data to the ECU with a delay, injector issues and faulty PRV. What do you think?
Log: https://log.tunezilla.com/chart/688...DgEtAcMObKMOOJm0qw5l+wrfCrg/DoQN1wqhzSMKjAAAA