Hey everyone,I've got a problem with my E9 running a high pyro temp.Had the truck for 15 yrs. so i know it pretty well,or at least i thought i did.I sat it around for about a year,and now that i want to work it again its giving me grief,isn't it always the way.It used to run around 400-420 celsius on the pyro,but lately it,s up around 530-550.celsius, and it would'nt pull a sausage around a greasy frypan.Ive pressure tested the lift pump.40 psi. at idle-55 psi.at 1500rpm.Took the turbo, which has only done 90000km. since i rebuilt the engine,off and had it checked again and was told it was perfect.Checked all the usual stuff,air-inlet restriction,air cleaner element,exhaust restriction,spun on some new fuel filters etc.all to no avail.Put a new anneroid valve and puff limiter piston on and played around with the shimming till it seemed to be working properly, but more fuel just meant a higher pyro temp.This thing is doing my head in.I pressure tested the intercooler,and i am losing pressure in a static test.Duralite say if you lose more than 5psi.over 15 seconds at 30 psi pressure,you have a problem.I tested it by blocking the intercooler pipe where it goes into the turbo on the pressure in side so it would show up any inlet manifold leaks as well when soapy water was sprayed on it.No leaks in the manifolds anywhere,but a decent leak from the front and rear of the top left corner of the intercooler.Not stone damage,more like cracking where the tubes meet the side tanks.It loses about3-4psi over 15sec.My question is,does this static leak have the potential to take away a heap of power and send the pyro through the roof when the truck is being worked and everything heats up?