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turbo droping boost,accutuator?

392 views 3 replies 4 participants last post by  bjr 
#1 ·
my c2olets now droping boost at around 60-80 mph 4th gear,it climbs to 14 psi and then peals off to around 9 psi with no lift of the throttle,is this normal?im fairly sure it wasnt doing this b4.turbo doesnt apear to smoke,could it be the actuator???
 
#2 ·
Sounds like its overboosting, as normal, then dropping back to normal boost.

Not got a guage on mine (+ still not on the road) but this behaviour is as I would expect. (don't know if the figures make sence though)

Overboost kicks in at low revs then backs off higher up.

At least thats how I understand it all.
 
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