I have been lurking around this site for a little while and I find it to be very informative. Great write ups! This is my first post. I just got a GT1749VA installed on my 1998 Jetta TDI. At first I was having some extreme over boosting issues causing limp mode due to a bad N75 and a vacuum leak. At first I didnt have a boost gauge installed and I was going by my logs to see where my boost was at. The MAP sensor on my 1998 Jetta only reads up to 2.5 bar. So the highest value VCDS was showing me was 2570mbar, which is roughly 22ish psi when subtracting atmospheric pressure. After I installed my boost gauge I seen this : The highest spike I seen was 32PSI!!!! The first couple days I started noticing pools of oil on the ground which looked like it was coming out of the hole in my intake manifold and the intake gasket. So I just assumed that the boost spikes were causing this. Anyway I really got scared when I noticed there was also coolant on the ground. I do know for a fact that my water pump is leaking and the pool of coolant is right where the water pump would leak. My parking spot was spotless before the instal. I also noticed my coolant feels oily but I cant say for sure if it was like this before and caused from my EGR(now gone) or oil cooler. Can overboosting cause a water pump to leak more? Would it also cause oil to squirt from the intake? I really want to rule out a head gasket ASAP , so I am thinking about getting an oil analysis done, pressure test(Great write up BTW!!) and actually get under the car for a visual inspection when I get to my dads garage. Is there anything im missing out? Are the pressure testers for this expensive? Would I be better off taking it to someone or just using that money and buying one myself? I have thrown a crap load of money at this and id really like to get it sorted as cost efficient as possible. Any advise would be great!