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Will try to have a look tomorrow in box of old Renault instructions, might have something. So long ago cant remember tbh
Only blurb I found from quick search on internet
GT Tuning 'Spider' Valve For use with our Pro-cockpit in-car adjustable boost control. It allows the user to accurately pre-set both minimum (below standard if required) and maximum boost ceilings, using two adjustable and lockable controls in the engine bay. This prevents accidental over-adjustment plus below standard boost for motorway, cruising etc; saving petrol, turbo and engine wear. Easy to fit & easy to adjust.
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