Boost adjuster
#1
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Boost adjuster
Hi, found out that my Bugeye WRX has a boost adjuster plumbed in where solenoid should be and has a boost gauge on the drivers side pillar. When driving, it seemed to pulse on and off boost when it got towards 1.0 bar so i tried turning it up, it then boosted to 1.2 bar and cut boost altogether followed by EML on and limp mode. I turned it back down, just below where it was originally, reset EML with OBD2 and now it seems to give a proper smooth boost delivery at 0.9 bar (stock i think). Am i right in thinking this boost adjuster is pointless unless the ecu is altered to compensate and will only fight the adjuster if not? Comments appreciated, Mark.
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Exactly what i thought, luckily the overboost protector is still in place so i havent damaged anything. Am i also right in thinking that my Bug boost plumbing would have been modified to take an extra pipe for this adjuster? If so does this mean i need a 3 port solenoid now instead of a 2 port? Again, help appreciated Mark.
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It could be there to cap the boost, do you have any mods? It won't hurt leaving it set at standard boost pressure. Do not use it to increase boost pressure. A lot of people fit these to prevent overboost problems or spikes. Let's hope for your sake whoever fitted it didn't bugger about to much with it!!
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Should be ok now i reckon, boosting at bang on 0.9 bar and running sweeter than ever, after all Subaru spent millions researching the final stock boost setting so a £50 bolt on mod isnt going to make the Scooby better is it now!....
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