Just wanted to say thanks to Neil for a great product. I had a dobeck box on my Impulse apex and it worked good, but at 40 miles I was out of gas. I had a really rich condition when not wot. I'm a finicky tuner and I couldn't get it leaned out. So I ordered the Boost-it kit. The last trip I went 62 miles and didn't have to put any gas in. It is nice smooth power and was tuned in after about 15 minutes. It haven't touched the box since. Good piece of mind to know that the sled is running on its own mapping when not in boost too. Impulse makes an awesome kit and Boost-it helped even more.