HELP: OverBoosting!! Not sure why??
HELP: OverBoosting!! Not sure why?? I can not seem to get my boost under control. I thought my GReddy EBC fluked out and it was defaulting to my Tial Sport springs and was thinking that perhaps they were high psi springs. I normally run about 10psi on pump with 9:1 compression but right now I"m spiking to 15+ in 2nd gear low RPM at WOT. I ran my vaccum from the turbo compressor housing direct to the center tip of the waste-gate, side port I have blocked off (one that normally goes to my EBC) just to experiment and see how much boost my springs were producing.
I then took the waste-gate covers off and found a large blue coil on the LH side and a bit smaller red coil on the RH side. I would think they should be the same but I"m no turbo expert. Then I proceeded to cut the springs in half to reduce the tension to try to get a change in the boost levels and much to my dismay, it did not seem to change anything when I test drove it again. What can I do to troubleshoot from here or did I just need to replace the waste-gates or the internal diaphrams? Thanks for your help.
I then took the waste-gate covers off and found a large blue coil on the LH side and a bit smaller red coil on the RH side. I would think they should be the same but I"m no turbo expert. Then I proceeded to cut the springs in half to reduce the tension to try to get a change in the boost levels and much to my dismay, it did not seem to change anything when I test drove it again. What can I do to troubleshoot from here or did I just need to replace the waste-gates or the internal diaphrams? Thanks for your help.
TECH Enthusiast
Joined: Jan 2004
Posts: 608
Likes: 0
From: New Zealand
I can not seem to get my boost under control. I thought my GReddy EBC fluked out and it was defaulting to my Tial Sport springs and was thinking that perhaps they were high psi springs. I normally run about 10psi on pump with 9:1 compression but right now I"m spiking to 15+ in 2nd gear low RPM at WOT. I ran my vaccum from the turbo compressor housing direct to the center tip of the waste-gate, side port I have blocked off (one that normally goes to my EBC) just to experiment and see how much boost my springs were producing.
I then took the waste-gate covers off and found a large blue coil on the LH side and a bit smaller red coil on the RH side. I would think they should be the same but I"m no turbo expert. Then I proceeded to cut the springs in half to reduce the tension to try to get a change in the boost levels and much to my dismay, it did not seem to change anything when I test drove it again. What can I do to troubleshoot from here or did I just need to replace the waste-gates or the internal diaphrams? Thanks for your help.
I then took the waste-gate covers off and found a large blue coil on the LH side and a bit smaller red coil on the RH side. I would think they should be the same but I"m no turbo expert. Then I proceeded to cut the springs in half to reduce the tension to try to get a change in the boost levels and much to my dismay, it did not seem to change anything when I test drove it again. What can I do to troubleshoot from here or did I just need to replace the waste-gates or the internal diaphrams? Thanks for your help.
TECH Enthusiast
Joined: Jan 2004
Posts: 608
Likes: 0
From: New Zealand
