I found their customer service was shite. I went down and paid £50 towards getting my car set-up and was told they would ring me when the actuator I needed was in (which as it transpired I didn't need anyway). Did they ring me? Nope. I rang 5 times over the next couple of months and was always told they would get back to me but they never did. So I was £50 quid down and no set-up. I went to Engine Advantages and found them much more helpful.

I'm sure Grove are very good tuners but I won't use them again.