In response to a request for opinions on how to safely boost a V70, MVS user pkplok posted this link which is specifically about boosting Volkswagens but should work for Volvos as well. Additionally, user SweedSpeed posted the diagram below which shows how to allow the ECU/solenoid to regulate boost in lower gears while utilizing […]
Boost pressure issues seem to be the #2 issue in the Volvo Performance world beaten out only by vacuum leaks. Boost pressure control in the 1994-1998 models is a pretty simple system but for the ECU to manage boost correctly it relies heavily on known base values and settings. If these settings are off or if there are mechanical issues then the boost control system can be out of whack.
Changed the wires, cap and rotor to good but used Volvo from a spare engine allready my better starting and drove much better. We then took the aftermarket boost controller apart and the little ball that are used as a one way valve was stuck cleaned everything up nice and connected it to the turbo […]
Stage 0 means to get your Volvo’s critical systems as close to new as you can get, or alternately, to get your Volvo’s components replaced or rebuilt in the systems that can cause problems, like braking, or steering, etc.
You should do these things to increase reliability, boost economy, in preparation for performance modifications, or all three.