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I have a GU ZD30 and auto. I have replaced the injector pump, injectors, and head within the last 10-15k kms.
I Blocked the EGR and fitted a boost gauge and drove around for a while. when cruising I would notice the boost gauge to spike to 20+ then fall away to around 10-15 and stay there while accelerating. while cruising on the freeway I could hear the intake change noise and the boost climb to 15 and sit there. But here's the issue.....
I have now fitted a Dawes valve to the car. 'No matter what I do whether it be full throttle or revving it out I can't get it to boost above 9-10psi. it barely gets to 5psi before 2500rpm and is just a slow bucket of puss . I cant keep the EGT under 480 while cruising at 100 and I cant get it to accelerate without reaching EGTs of 500-550+. Why has the Dawes valve made the car worse n not better ??
. I cant keep the EGT under 480 while cruising at 100 and I cant get it to accelerate without reaching EGTs of 500-550+. Why has the Dawes valve made the car worse n not better ??
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