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SVTPerformance's Chain of Restaurants
Tuning À la carte
Help me diagnose an unexplained AFR change
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<blockquote data-quote="decipha" data-source="post: 16199060" data-attributes="member: 74327"><p>tunes dont just go bad or change, best thing to do first is to verify your fuel trims arent wayy off to know its running correctly. But perhaps your fuel pump was weak before it could very well be slightly richer now.</p><p></p><p>in any case u dont have to pay for another tune to find out. Simply pay the minimal dyno pull fee ~$100 for 4 pulls? Or just buy another aem digital wideband and try it out ~$160</p><p></p><p>If u do need to go back to your tuner they should charge u a mininal fee for that very slight revision if anything at all.</p></blockquote><p></p>
[QUOTE="decipha, post: 16199060, member: 74327"] tunes dont just go bad or change, best thing to do first is to verify your fuel trims arent wayy off to know its running correctly. But perhaps your fuel pump was weak before it could very well be slightly richer now. in any case u dont have to pay for another tune to find out. Simply pay the minimal dyno pull fee ~$100 for 4 pulls? Or just buy another aem digital wideband and try it out ~$160 If u do need to go back to your tuner they should charge u a mininal fee for that very slight revision if anything at all. [/QUOTE]
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SVTPerformance's Chain of Restaurants
Tuning À la carte
Help me diagnose an unexplained AFR change
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