yeah i remember , you need to do a before an after sort of test an do some 30-70 times in 3rd see what you get . but you also have pd160 intake an diff filter plus sometimes you do just get a really well made engine which punches above it weight. I think you perhaps an exception to the rule, but you would be wouldn't ya lol. But try it an post i am interested. i wish i had thought cos on the day we could have swapped my PD2 box to you motor an reran now that would have been interesting.