Considering Holley sniper EFI for my 1969 340. Thoughts from people who have that set up?
You will spend a BUNCH more time fiddling with, and learning to tune ANY aftermarket EFI system.
I agree that initially there is a big time investment but that will diminish quickly if the user takes an active role in the tuning process. The tuning concepts are the same as they would be with a carbureted engine they’re just presented in a different format.
That said, if you’re not computer literate or are not comfortable tuning with a laptop then it may not be worth the aggravation. It’s not hard software to learn but it does require basic computer aptitude. If you can navigate file folders, fill in fields and perform basic file functions like ‘save as’ then you’ll be fine. If you can’t handle that stuff in 2024 then just throw in the towel and go back under your rock.
For me, having the tuning parameters laid out as a graphical representation actually made the process easier since there is no guessing. Each cell in a table or point in a data log trace has a value. What that means is that it either ‘is or it isn’t.’ Not so much when dealing with mechanical parts.
The software also gives the user much more finite control over the tuning parameters. Maybe you have a flat spot during acceleration and one or two points on an ignition or fuel curve are out of whack. You can change the values for those cells but leave the rest of the curve alone so there’s no residual affect on any other points. That in itself overcomes the stack up of tolerances when dealing with mechanical devices.
Again, yes, there is a time investment but that should be understood. My Dodge never ran better with the Sniper and even got better mileage. 100% win and worth the time.