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That makes sense , from my experience it seems that the stock ecu was just dumping to much fuel with the higher setting in mid range. I am currently installing an AEM wideband with a wireless feature to connect to my iPhone, this allows me to monitor the readings . I know it's anal , but it's the only way I am sure it's not running lean .
At 2.75 the car drives like stock , but gives you a kick in the back on acceleration in 3rd and 4th. Does anyone have any dyno results with AFR readings with there tune ?
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