Harry came to the dyno with me & brought along 4 other ecu's with various changes in timing & a/f. We did a pull with each and the one that netted the most power(215whp) was tweaked again by Harry since he now had a graph to go by. When I dynoed again a month later with this revised tune is when my Z made 228.82 whp. After looking at that last dyno shows more power can be made with some fine tuning. We'll work on that in the near future since I just had bungs welded on the test pipes. This enables Harry to use his wideband for further tuning on the dyno & street.