well i started the install myself and got the intercooler, intercooler piping, BOV, injectors, a/f gauge and boost gauge all put in in about 3 days. i was also dog sitting and was pretty busy. i did't feel comfortable tapping my oil pan or doing any of the wiring for the injectors or blue box, so i had a shop finish it up. i also needed the shop to weld a new o2 bung in the downpipe and put flanges on my high flow cat. i just didn't have the tools/experience to finish it up myself