bigpatofpa
15+ Year Contributor
- 38
- 2
- Sep 17, 2007
-
collegeville,
Pennsylvania
hello all, i have a 2g tsi awd and no hair left. e316g ported wastegate and turbine housings, ported for flapper arm(so it can open more) 3inch turbo back
safc 560cc's fmic.
I was running 17psi with no issues, have a little bov flutter, After doing research for a friends car i realized i had my hallman hooked up backwards also had everything running off the intake manifold for my pressure source. Stupid me, I drilled and tapped the compressor housing for a pressure reference. Re tubed everything correctly, dedicated line from the manifold to bov, mbc source from the comp. housing.
took it for a drive now it overboosts up to about 25 psi. i turned the mbc all the way out same problem. put every thing back as i found it when it was good at 17 psi. same problem. tried a different mbc same problem.
So im thinking its the wastegate, take out mbc and ran a line from the pressure source directly to the wastegate , and it decreased to about 21-22 psi. I put shop air to the wastegate actuator it actuates between 10-15 psi, and travels
0.5" all with no leaks. when i take the wastegate rod off the flapper arm , the flapper arm travels about 1" due to the porting. do i need to extend the actuator rod? why was it running good at 17psi before i f***** with it? somebody please help before i blow this thing up. btw turbo and gate are genuine mhi and have ~5k mi on them
safc 560cc's fmic.
I was running 17psi with no issues, have a little bov flutter, After doing research for a friends car i realized i had my hallman hooked up backwards also had everything running off the intake manifold for my pressure source. Stupid me, I drilled and tapped the compressor housing for a pressure reference. Re tubed everything correctly, dedicated line from the manifold to bov, mbc source from the comp. housing.
took it for a drive now it overboosts up to about 25 psi. i turned the mbc all the way out same problem. put every thing back as i found it when it was good at 17 psi. same problem. tried a different mbc same problem.
So im thinking its the wastegate, take out mbc and ran a line from the pressure source directly to the wastegate , and it decreased to about 21-22 psi. I put shop air to the wastegate actuator it actuates between 10-15 psi, and travels
0.5" all with no leaks. when i take the wastegate rod off the flapper arm , the flapper arm travels about 1" due to the porting. do i need to extend the actuator rod? why was it running good at 17psi before i f***** with it? somebody please help before i blow this thing up. btw turbo and gate are genuine mhi and have ~5k mi on them