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if jetpilots car is stock with just a header and cai there is no way to have so lean A/F ratio. i have seen stock high octane fuel maps for our cars and up hills the a/f is even 10:1!!!
so either the reading of the dyno are wrong, or he has a device lets say SAFC to alter A/F ratio.
My car with S4s, CAI etc has a similar A/F ratio, but with full bolt ons+SAFCII, minus ECU.
alex29
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