I am very happy with the work done so far on my 1992 Nissan 300ZX. The engine ran rough at idle and up to 5 mph, causing the check engine light to go on. This was due to a faulty fuel injector. Menlo Atherton Repair Service put in a new fuel injector, causing the car to run smoothly at idle and low speeds and the check engine light to go out. I was also happy that I didn't need to change all the fuel injectors which would have cost alot more.