I always thought you are the good looking one Phil.
I had a look at the exhaust on the 2.4 yesterday and do now understand where the black hole is. The output should be considerably higher as I always thought. The cat is cramped in there in a sickening way. Unfortunately Supersprint doesn't offer anything at the moment, but is happy to do a system if we send a car to Italy for four weeks. We are also discussing with some other people a solution. Depending on the interest we will be supplying a solution soon.
Unfortunately we couldn't do a lot of work on the 2.4 because we couldn't get a non Selespeed model yet. Problem with the Selespeed is that it can't be knocked out of gear above 40km/h, which doesn't give us exact flywheel figures. Calculating the losses wasn't an option because of the varying drag losses with different temperatures.
As soon as a car is available we will do much more work on the 2.4. Currently we are working on the induction system and looking into the re-profiling/production of cams.