05-04-2012, 06:41 PM
so basically what is happening is that a whistling sound starts at around 10psi and gets progressively louder/faster until about 22psi where my boost limit is reached. initially this was happening ealier on (limiting to about 15psi), then i added more preload to the wastegate actuator and that got me to where i am now. i have tried simply adding more preload and it has made no difference, the wastegate actuator is now at a point where it is almost fully extended with the wastegate closed (virtually de-wastegated).
there is plenty of fuel going in as it is smoking on full boost. i have also had a good look for boost leaks but cant seem to find any (tried soapy water on the joints with car ticking over method, seems dubious but it was the best i could think of). any ideas about why this might be happening? i am ideally wanting to be around 26psi. any suggestions would be greatly appreciated.
my current setup:
fmic with s/s boost pipes and silicone connectors + adaptors
bosch pump - upped fuel, LDA rotate + nylon washer thing removed
hybrid T2/T25 turbo
s/s straight through turbo back exhaust
plumbed into the compressor housing normally used for wastegate actuator only is a boost gauge, the fuel pump, and an MBC (closed)
cheers,
jim
there is plenty of fuel going in as it is smoking on full boost. i have also had a good look for boost leaks but cant seem to find any (tried soapy water on the joints with car ticking over method, seems dubious but it was the best i could think of). any ideas about why this might be happening? i am ideally wanting to be around 26psi. any suggestions would be greatly appreciated.
my current setup:
fmic with s/s boost pipes and silicone connectors + adaptors
bosch pump - upped fuel, LDA rotate + nylon washer thing removed
hybrid T2/T25 turbo
s/s straight through turbo back exhaust
plumbed into the compressor housing normally used for wastegate actuator only is a boost gauge, the fuel pump, and an MBC (closed)
cheers,
jim