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I'm willing to bet that either A) the AFR wasn't actually being read from a WBO2, B) there was a massive leak near the O2s, or C) that entire graph is fake and it didn't make that power if the AFR is accurate.
It didn't look good to me and I'm not sure how it's even possible to leave a tune like that.. Asked the seller if it was indeed the final tune, he said yes.
Supposedly the car was tuned by a tuner with a good reputation in my area I've heard of before.
Awaiting a reply now. Wanted some input from people who know more than I do.
update, Was told the wideband in the car reads a more proper lower 12 at wot.. but I feel it's not a wise choice to gamble on an afr guage reading without a proper dyno reading to acompany. Really like the car but I can't figure any reason why the graph is reading such a bad afr, outside of a bad tune. It has to be reading something I guess since there's a dip in afr past 6k rpm
Telling you it's not possible the car made those numbers and that graph with that AFR. The scaling is off on the wideband or it was reading an exhaust leak. I wouldn't be afraid of the car just need someone to confirm who did the tuning.
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afr question 
