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How much vacuum

561 views 1 reply 2 participants last post by  dreamstang 
#1 ·
Ow much vacuum should a 92 gt pull? I am still fighting with the high idle when I stop at a light. I put a gauge on it today and I am reading between 17-18. I put the gauge on the distribution block on the driver firewall. Is this enough? It is a stock 5.0 with just bolt ons. Factory can. Thanks
 
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