It's bout time u got your ass on here !!! We run one as well no probems.The first year Randy told us he would warranty it even if u sink. Hard to beat that. We've had the system for 5 years.Go to www.insidetopalcohol.com and do a search nothing but good.Yes i work on 2 jet boats that have rpm data loggers. I like them but have not used anybody else stuff. Randy the owner of rpm is very good to help if any problems.