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rough idle with MBC

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ericismyname

20+ Year Contributor
682
0
Oct 14, 2002
West Des Moines, Iowa
i installed my manual boost controller and upped the boost to like 15. (from the previous 9 it was stock). now when in neurtal the car has a really rough idle, not as idle as when my ecu was going bad on my old 91 but still rough. i am thinking either ecu problems, fuel problems, or leaks somehwere?
 
my bad it says not as bad as my idle , i meant not as rough as my idle when i had a bad ecu and it woudl go out.
 
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