My Holley Sniper install thread

[Firetodd]

Kern, after the guy said that I instantly thought, oh yeah I knew this! Anyway, I made it to the car show and it ran great! I felt kinda sorry for others as they left and I heard a few pedal pushes and starters turn over cars as I turned the key and mine instantly started.

[RIDELIKEHELL]

I plan on doing over the winter but plan on buying the gas tank the offer as well.

[Kern Dog]

Damn that looks clean. How is part throttle response? So many late model cars/trucks feel great from a dead stop but feel lazy at part throttle. I've wondered if that is due to the EFI or just the way that they are tuned.  Good news that you made it to the show as planned.   

[Firetodd]

The throttle response has been great, but I'm waiting for my Holley adaptor to arrive to be able to hook up my kickdown linkage. It is crazy amazing to have a computer tune my 50 year old car. My adaptor has shipped so after I get it on, I will report back. I still have some wire management clean up. I may end up hooking up the timing control through the Sniper so I left those wires available.

[Kern Dog]

I do like the idea of improved driveability. Due to having NO functional heater or A/C, I rarely drive mine in cold or hot weather. Mine seems to run fine though.  I'm curious if the EFI compensates for high humidity and heat? In CA the humidity is low enough to not matter. If the power is the same but you gain some mpgs and it drives better, that sounds pretty good.

[67Charger440]

Kern,

It is all controlled by what comes out the pipe via the O2's.  If the air is there, it uses it.  Humidity, elevation, temperature, etc all affect the O2 content and pressure of the air.  The self learning systems are all tail-pipe feedback systems and deal with whatever goes in by reading what comes out.

[Paul G]

What did you connect the 12v switched wire too?

I just finished with a friends 71 Challenger Holley Terminator install, and had to use a relay to tie ign1 and ign2 together during cranking. The 66/67 may have a different wiring scheme than the 71 did, i dont know. 

[Firetodd]

For 12v switched, I used the two ignition wires that used to feed each side of the ballast resister before I switched the the Firecore distributor. The picture of the engine compartment shows the pink wire junctioned to them. I still need some wire cleanup but it works

[Paul G]

For 12v switched, I used the two ignition wires that used to feed each side of the ballast resister before I switched the the Firecore distributor. The picture of the engine compartment shows the pink wire junctioned to them. I still need some wire cleanup but it works

Are you still using the factory ignition with the Firecore distributor or an aftermarket ignition? I ask because the factory ignition must have the ballast resistor installed to reduce the voltage to the ignition coil during run. Aftermarket ignition systems do not use the ballast resistor to do this, reducing the coil voltage in run is handled internally by the ignition system.

If you short the two wires (ign1 and ign2) on each side of the ballast resistor together while using the factory ignition, the ignition coil will receive full voltage in run. That will eventually overheat the coil, it will burst and spray oil over the inside of the engine compartment. I have seen it happen.

If you are using aftermarket ignition you are good to go connecting the ign1 and ign2 wires together. 

[Derwud]

You might want to upgrade to the Electronic Voltage Regulator or a Single wire Alternator.

[Firetodd]

I am using a Firecore ready to run electronic ignition with 12v coil.

[68CoronetRT]

Been running my Sniper kit for over 2 months now. I love it!

I ended up using a relay for my switched power. Made life alot easier.

[303 Mopar]

I am using a Firecore ready to run electronic ignition with 12v coil.

You don't need the ballast resistor any more.