Also I agree that the state of the tune remained untouched for each cooler, but pull say like 1psi out, and 2 degrees timing out, rather than having timing running on edge. that way, we will be able to 1) see the boost difference of each intercooler and graph it over the dyno run. both before the cooler and final at plenum (simon I'm assuming u have both map sensors for the dyno?) 2) log air temp via obd and graph it also on the dyno graph over the dyno run 3) be able to see power differences between each cooler without touching tune based on flow and temp. As for testing procedure, this will need to be agreed on for each test. What I suggest initially is, after intercooler is setup, let it start up and cruise at 60km/h for 5 minutes on the dyno (to get everything upto operating temp). Then do a initial power run, after run, let it idle whilst the data gets saved in dyno, for say a period of 30 seconds, and the immediately run it up again, and then repeat a 3rd time. I've always noticed some coolers cannot take 2 or 3 consecutive runs, and it will give a nice inidcation of how a cooler handles heat soak.. And then finally maybe give it a 4th power run after say a 2 minute cruise time at 60km/h to see its recovery rate.. Also document physical temps of the cooler top vs bottom. Also I suggest we run with the front bar replaced back onto the car, rather than leave bar off to save time in intercooler changed Doiing a test like this we are able to compare each run vs each cooler on a 1st 2nd and 3rd run bases, and also see which cooler prevents heat soak and which doesn't. Anyways, open to suggestions