RT, Not true at all...If and only if it can be counted on to be applied in a manner which will allow it to last as long as a stock pistion would...

Then you can compare the coefficients of friction and see what gains could possibly be expected....and see if whatever top figure possibly available would actually be of any benefit...

So we can Calculate potential... and if the max potential would not be worth the expense and adds hazards then it would not be a smart move...

I don't care what samiam3 does ....it is his car.... but I am making the argument for other younger members who arrive here with the " hot rodder spirit"... some of the things which would affect a gas engine just do not count here...and to start at the top of the food chain (the MB diesel) and try to improve it does not make economic sense....