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Clean the IACV and MAF, you more likely idle at 800-900rpm normally, some cars do idle lower. Are you reading a digital or analog gauge? Messing with vacuum lines on the throttle body isn't a good suggestion, I deleted the purge control system on my 96 saab and it hasn't really changed anything. Deleting the IACV will cause a rough idle leading to more issues, staling and poor throttle response.
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