My Sniper came in this week for the Taxi.I got the gold one. I can't wait to get it up and running.
I put a Sniper system on a customers, 1972 C-10, 500hp 383ci, dart heads, big cam about a month ago and he's been driving it everywhere! He LOVES this system! It at least doubled his fuel mileage to 15L/100km (or what our US neighbors call 15.7 miles/gal.) with a TH400 and 4.10 gears on the Hwy @ 70mph, 3,500rpm going to his cottage. He needs an OD or change the gears now. The truck starts cold/hot perfectly, idles great and the throttle response at anytime is instant. We did not use their timing control, he has an MSD system in it already and from what I've seen online, people are having the most troubles with the timing control with these units.
If installed correctly, you should love it. Key is NO exhaust or vacuum leaks, 180*F Engine thermostat and you'll be good.
If you haven't used or seen "Remflex" exhaust gaskets (made in USA)...check them out. I was very impressed.