yeah it's funny Andy pointed out anumber of things and then the next thing we see all his race engines have them on so..... pot kettle and black... are the words..
I will in time catch up with him later in the year and I will pin him down and ask him as he has now got a foot in two camps..
Knowing Andy he will slither out of what ever I say to him once he is cornered over it
I am sure it will be good ( the exhaust ) and like we both say he does use them for the race cars he builds there was an issue with back pressure / lenght of the tubes and I will ask Gavin when I speak with him next.