Shaun@ AED explains #8 failures.

[OG Fox]

Originally Posted by Midnight11 just wondering but explain how a tuner here cant do idle and part throttle and one of those guys complains about mpg haha

Shaun@AED only tunes 5.0 and from what I read is the expert in doing so. A dyno tune is also great, and I know that True Street is the best in town. However, I would like to know what is more accurate when tuning, datalogging from the car's computer or using a sniffer out the tailpipe for afr?