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A follow up; After leakdown test, fuel pressure test, verifying camshaft health and a swap back to a non Sniper EFI controlled ignition system. I still had the low speed underload miss, O2 sensor readings going lean on acceleration and a new development of 1,000 to 1,100 rpm idle despite the...

I thought I could hook up this Holley dash and get the data log and config file but get these messages...

Update; Have wicked spark at each plug wire, have gone so as to check cooling system for combustion gases. Tracking down a leak down tester now. Now wondering if anything appears amiss with these sensor readouts;

My Sniper efi/Hyperspark system has been working great for months, the other day I was coasting down a hill and all of a sudden it developed a misfire. The one thing I notice is my air fuel ratio goes way lean on deceleration. I have checked compression and replaced the plugs. The spark that...

I have the Sniper EFI, Hyper spark ignition and a performer manifold on the 440 in my 66 Charger. Also used an Aeromotive Stealth fuel tank. Throttle linkage was not a problem, I used the throttle stud off my Street Demon carb and an ARengineering raised kick down lever bracket. I don't see any...

Curious how do you know the sending unit is original?

Back in the day my 69 roadrunner 383 came with a crimp style pump, it was common practice to replace those with a street hemi fuel pump for more volume/ pressure. I remember doing that mod and the Hemi pump I got was the rebuildable style like you have in the picture.

I had one on my 440 Charger, didn't hate it. Annoying is having to buy a $30 plus dollar throttle linkage stud and an AR Engineering "high rise" throttle cable bracket in order for all that to lineup/hookup/look right. I used a drop base Mancini air cleaner bottom without issues. I ended up...

I have an Edelbrock performer with no spacer or mods on my Holley Sniper equipped 440, seems to be fine

I put an Aeromotive stealth tank on my 66 Charger, I only remember two pump choices at the time I bought it so maybe not generation 2. I just used the stock mounting pad on top. I did need to "adjust" the "crimp tabs" on the corners of the tank after installation to clear my TTI 2 1/2"...

I put the Aeromotive Stealth Tank in my 66 Charger, I did not need to cut hole in trunk floor on my application.

I would also suggest that if you have an electric choke and are running an electric pump to prime the carb, to wire it in such a way so your choke isn't open before you even start cranking the engine.

Thats the one I would go with if needed, you will be able to hear it but IMO its tolerable.

i ended up getting an Aeromotive stealth fuel tank with the pump inside. Of course that started the snowball rolling with a return fuel line and ending with a Holley Sniper efi system. But hey I can't hear that pump when the engine is running now.........

I thought my old Mallory was loud so I tried one of these and it was worse.