I have a question on wastegate and boosting. I have adjusted the boost up from 14 lbs to 16 lbs by shortening the wastegate actuator rod length and have noticed that the vacuum has dropped from 14/13 down to 12/11 at 55 mph. Is this normal?? Vacuum at idle is 16 to 18. I have an AEM TruBoost electronic booster. It is setup to run the solenoid provided by AEM. The vacuum does not change even if it is “off”
Can someone explain the reason for this ??
Can someone explain the reason for this ??