Re: Second thoughts about adding a Sniper.
I'm a guy that took my Sniper off and went back to a carb. Just last week.
I had some initial problems at the very beginning of the install which Holley helped me with and then it was simply amazing to drive the car. smooth starts, great acceleration.
BUT, all of a sudden about a month and about 700 miles of trouble free driving an O2 sensor went bad, made it home and got another sensor from NAPA, that one lasted about a week. I called Holley tech. told him my problem and they sent me another O2 sensor, that one lasted about 20 min.! I reset the Wizard each time so that wasn't the issue.
Before you ask, I have a freshly rebuilt (less than 1000 miles) 454, mild cam, new Heddman headers, new Pypes X pipe exhaust, all new gaskets, and no exhaust leaks. HEI ignition, all new Taylor wires.
I think something happened internally to the Sniper. I'm going to send it back to Holley to diagnose it.
I'm not very computer literate so the idea of using the laptop to fine tune the unit didn't appeal to me. Some people really enjoy that, it's just not for me. They sell it as a "plug and play" I don't feel it's that simple.
I put a new 750 Edelbrock on it last week and had a great weekend enjoying my back to basics 69.
Just my humble opinion,