Hitting overboost protection no matter what I do
#1
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I have been running without any ebc or mbc since I have boosted this car. Since the wastegate is rated for 7psi, that is all I have been reaching, except for some boost creep to 11psi near the end of the pull.
I have tried an AEM truboost ebc standalone, with no luck. No matter how I set it, I am getting oscillation and hitting boost protection (13.7 psi) by the time I make it to 3rd gear.
I now am trying a Grimmspeed MBC, with the same issue. I am only at 4-5 "clicks" (1 click is .25 psi) yet I am still hitting boost protection by 3rd gear during a pull.
If I run off only the WG actuator(no ebc or mbc), I am never hitting boost protection.
What am I doing wrong?
I have tried an AEM truboost ebc standalone, with no luck. No matter how I set it, I am getting oscillation and hitting boost protection (13.7 psi) by the time I make it to 3rd gear.
I now am trying a Grimmspeed MBC, with the same issue. I am only at 4-5 "clicks" (1 click is .25 psi) yet I am still hitting boost protection by 3rd gear during a pull.
If I run off only the WG actuator(no ebc or mbc), I am never hitting boost protection.
What am I doing wrong?
#12
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Okay so I straightened out the actuator rod, got it so that the hole on the rod is about half on the peg. That way it has just a bit of preload to keep shut.
This seemed to fix my creep problem! Boost is now steady at 11psi through all gears. So mission accomplished.
I am now facing a NEW problem. My boost protection is set at 205kpa now. I am aiming for 14psi. However, I cannot get close to that because I am hitting the boost protection due to a 2psi spike.
Is there any way to fix this spike? Would an EBC help? I would like to get it to 14psi consistently without a dangerous spike.
This seemed to fix my creep problem! Boost is now steady at 11psi through all gears. So mission accomplished.
I am now facing a NEW problem. My boost protection is set at 205kpa now. I am aiming for 14psi. However, I cannot get close to that because I am hitting the boost protection due to a 2psi spike.
Is there any way to fix this spike? Would an EBC help? I would like to get it to 14psi consistently without a dangerous spike.
#13
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Okay so I straightened out the actuator rod, got it so that the hole on the rod is about half on the peg. That way it has just a bit of preload to keep shut.
This seemed to fix my creep problem! Boost is now steady at 11psi through all gears. So mission accomplished.
I am now facing a NEW problem. My boost protection is set at 205kpa now. I am aiming for 14psi. However, I cannot get close to that because I am hitting the boost protection due to a 2psi spike.
Is there any way to fix this spike? Would an EBC help? I would like to get it to 14psi consistently without a dangerous spike.
This seemed to fix my creep problem! Boost is now steady at 11psi through all gears. So mission accomplished.
I am now facing a NEW problem. My boost protection is set at 205kpa now. I am aiming for 14psi. However, I cannot get close to that because I am hitting the boost protection due to a 2psi spike.
Is there any way to fix this spike? Would an EBC help? I would like to get it to 14psi consistently without a dangerous spike.
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