Switching from a carburetor to EFI has been a learning experience to say the least. From advice of a tuner, I decided to try a TBI system. Initially, I went with FiTech as back in the early days of the Sniper there were many problems. I also decided to build it right and not use the "sump" devices, and glad I did. I installed a new EFI tank w/pump, return line, etc. The FiTech system was great, right from the moment I drove my car out of the driveway I could feel the difference. No hesitation, smooth and responsive acceleration, very happy.
The next car I converted was about a year later, this time I tried the Sniper. Again, no issues and worked well. The nice thing about the Sniper was Holley's customer service over FiTech (which is basically non-existent). Also connecting the Sniper to a laptop was easy, the FiTech never worked and you need to be an IT professional to figure it out. The Sniper was flawless, until I had an injector go bad. The tough part was finding someone other than Holley to sell me one (Holley won't, they want you to send the unit back to them for repair). All in all, I liked the Sniper much better than the FiTech.
After running the Sniper for 3 years I didn't want to push my luck, with the bad reviews about RF and other issues I really wanted the next step. Something proven and completely reliable so I wouldn't have to worry. I went with Holley's Terminator X Stealth. No issues with RF, the ECU mounts under my dash far away from the hot engine. I love it. Highly recommend it over the Sniper & it only costs about $500 more.
One thing I will say is if you decide to dive into the EFI world, commit yourself to learning it. It's not plug-and-play. You will need to troubleshoot at some point. Like anything else the more you know about it the more comfortable you will be. There are plenty of resources out there. I am glad I went with EFI, but it's been a long road (and I'm not an expert by any means)...
