Originally Posted by Joshhleee
So should I buy this and use it everyone I want to take my car in so that the codes won't show up?
It may be a good idea to invest in the cable just to know if you are throwing codes. For me it was a cheap piece of mind, since I do track my cars occasionally. As far as the dealer is concerned: my service guy has been pretty receptive to mods in the past. I have never tuned my engines, but suspension and exhaust upgrades during warranty period were overlooked. Having said that, I've been going to the same CA for the past six years, so I think he may be cutting me some slack.