Quote:
Originally Posted by FA20Club.com
its more so due to the fact that these tunes now have intakes on them. i cant speak for john but i have found from my testing that intakes lean the mixture out thus causing this affect. i have since offered an updated tune prior to me even knowing this thread existed. you can contact mecha on this cause i email him whenever i spend more time on the dyno.
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This was pretty evident with my dyno tune. The mods do make a difference to the AFRs. I would recommend a road or dyno tune to maximize mods. Glad you cleared up the AFR issue, because mine is flat and safe. See other thread for details.