You guys dynoing with stock tuning in the wrong gear to avoid the limiter are not getting the best data. Then again we are talking about CAI and exhaust here. I spend most of my day everyday on the dyno tuning cars/trucks so Im pretty well versed in this stuff. The L87 ( I own one) does not dyno or respond to mods any differently then an L86. There are just some slight variances in driveline loss between the A6, A8 and A10 offered over the years. I have not bothered with tuning mine yet due to the cost. I will be doing so when I install a 2650 in early 21.