Has any one done any tuning on the diesel liberty? I have a friend that has one and he put a box on it that has 9 levels and adds about 90 hp so they say, I don't remember which brand it is but i'll find out. He said he is getting no more than 20 psi of boost whether it is in stock form or turned up. Does anyone make a boost fooler for these? It is probably not wise to do but this guy still wants to get more boost out of it.
