My quick net searching from other users experiences has not been good, some same they are great, but others that actually have proven and accurate ways to ascertain if the gauges are actually accurate have deemed them pathetic...
they are cheap, you get what you pay for, but they do have good customer service from what it seems and are prepared to give refunds if problems are found.
I personally dont like this, they are basically saying we sell good gear to those that dont know otherwise, but if you find are gauges are just cheap crap then we will give you a refund so we dont get majorly stung.
these seem like the gauges you have when you cant afford gauges.
ok to throw in your hyundai or lancer to look colourful and cool but if you actually need to use them for feedback info on whats going on wtih your engine then I wouldnt trust them...