I have one on my stroker. It seems like the rev limiter is a little low (ie, if you set it at 6500, it kicks in more like 6300). You can also set your timing curve on it. I like it and recommend it for the price, since you don't need to run a box with it.
The rev limiters are notorious for pulling signal earlier than the desired setting. Put a 6500 chip in and it starts pulling at 6200-6300. Turn it up a couple hundred RPM and the limiter shouldn''t affect the upper range.
The timing curve settings were a little confusing. I had crackedback and Brian at IMM Engine help in figuring out how to set it up. The rev limiter is a dial inside the cap, so you can easily change the rev limiter without the "pills" other rev limiters use.