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Surging idle whats wrong??????????????????

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Old Jun 4, 2008 | 06:28 PM
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99CAMMEDSS's Avatar
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Question Surging idle whats wrong??????????????????

Ok so i have what is in the sig and it has had a surging idle it goes up and down sometimes. Heres the story so my dad put 110 octane leaded fuel which screwed up the o2's so i put some 93 octane gas back in and some spare o2's that i had which i wasnt sure if they were front or rear or right or left so that might be wrong but it helped the problem but didn't fix it, it still surges somtimes after i let off and put it in neutral and when im stopped at a stoplight it will do it off and on so the question is do i need to put some new o2's on or is there somthing else going on?
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Old Jun 4, 2008 | 10:59 PM
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take a look at your cam, with 14.5* of overlap the tune may need to be tweaked. Def. dont run 110 anymore unless your tune is set up for it. Id say retune it yourself if you have the software, adjusting your RAF tables should fix most of it. If not try another tuner!
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