Boost spike on change up

Jul 08, 2004 0 Replies

Hi,



My car is an '88 9000 Turbo 16, auto 'box. I've noticed that when accelerating hard, the boost gauge 'spikes' briefly as the car changes up. Not a lot, but enough to cause pinking.



It's my first auto, and my first Saab, so is this normal behaviour? Or should I be looking at a new dump valve (BOV)?



TIA, Alan


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