Hello and thanks again for the link.New pipe is in .Problem is still there , no power on hills. I thought I would take the liberty of sending my data output from a friends FOXELL NT301 .Its not a Hawkeye, but its the best I could lay my hands on for now . Also, the MAF reading is in g/s and NOT mg/s. Please have a look at my data and see if you can spot any irregularities.