idle problems
I'm not sure about the idle problem...but yes, definitely get a matching 70mm EGR spacer. Are you running the stock one right now? That is only 60mm, so you are not getting the full potential out of your T/B. Also, if you are still running the stock intake, honing out the manifold (w/ a dremel or grinding wheel on a drill) where the EGR bolts on will help out the airflow too. Because I'm pretty sure that the manifold opening at the top where the T/B & EGR bolt on, is only 60mm as well.
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