Considering Holley sniper EFI for my 1969 340. Thoughts from people who have that set up?
My Dodge A100 has a custom made tank and an in-tank Holley pump. All the lines are -6AN from the tank to the Sniper 1 unit, and same as the return.
My engine is a 408 BluePrint stroker (360 Magnum) and runs strong. Wiring has been completely re-done as per FSM with only deviations being power studs for main junctions instead of the factory welded splices. The fuse box has also been swapped out for blade fuse blocks for ease of roadside replacement.
While I have not yet upgraded to the Hyperspark system, I see that in my very near future. The Sniper does have a self-learn program but that really is just a basic tune like others have said above.
Best thing you can do is read the instructions carefully, then read the again. Do not try and short-cut the instructions. Do not take advice from guys who have never touched one of these before......the know-it-all's who say do this and that know nothing.
Consider joining up with a dedicated EFI/Sniper forum as it will get you the best information available. There are other sources for training and learning on the net.... I signed up with Joe Simpson and his 'Tune Trilogy' before discovering there were others around. Joe has lots of information for learning.... he may not be the ultimate guru in some people's minds, but I have learned more than I ever thought possible watching his tutorials. You can never learn enough about EFI and these TBI units.
My personal thoughts on the Sniper upgrade - I wish I had been able to do this sooner. I was getting sick of carbs that leaked and were always needing adjustments. Muy wife was getting sick of the smell of gas and exhaust fumes filling the house and garage. Sick of breaking down roadside due to bad carbs, or temperamental fuel delivery.....best thing I ever did was get a Sniper.
It's no magic bullet, but it sure is the best I have had. :thumbsup: