what about Collins ??

I've been running a Collins st 3 chip and setup for about 10 years and it's been perfect...doing 336 bhp at 5778 rpm and 438 nm at 4906 rpm (above 400 nm from 3700 to 5850 rpm) at a rolling road tuneup recently.... and Im doing 9,4 to 10,5 km pr L fuel when driving "normally".... so I'm quite happy with that