After sitting on a set of new bosios for nearly three years, I finally decided it was time to install them. I took an extra set of old injectors to Gus at Pacific Fuel Injection who installed new bosio injector tips into old body and balanced them for pattern and pop pressure (10 bar over stock for older motors) The job went smoothly and at the same time, I decided to do a compression test and came up with these readings 320/360/320/310/360 - curious to do a valve adjustment to see if these readings change as it is just about time to do so but not bad for an engine with 340,000! Engine fired right up and I immediately noticed a much more even stronger idle. Very smooth acceleration and seems especially smooth driving off from a stop! The pintles on my old injectors were almost non existent which made me wonder if these were original injectors! None the less, the previous injectors worked fine and my car has always been a strong runner. I look forward to these injectors breaking in over the next couple of hundred miles and will report back. A few things that worked well for me were the right socket for removing injectors, loosening injector line brackets (4) slightly so lines had wiggle room for reinstallation, a swiveling crow foot (17mm) for loosening and tightening injection line nuts, and I also discovered something that made installing return lines much easier. My old lines were about two years old -not ancient but fairly hard which makes installation harder so I used new braided line which I had on hand -makes a world of difference! Second, it is my belief that the return line nipples on injector bodies sometimes get angled toward the injector body which makes line installation difficult. I took a small screwdriver and very carefully wedged tip between body and nipple to create more space by using screwdriver as a wedge -careful here as very little space is required! I will most likely take my old removed injectors and buy Monark injectors tips and have Gus work his magic on these so I can compare the two injectors, the Bosios in my sd and the Monarks in my td. Good luck, this is a fun and satisfying job!