Re: Sniper vs Terminator EFI
[Re: RTSE4ME]
#3021485
03/07/22 12:15 PM
03/07/22 12:15 PM
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Joined: Feb 2013
Posts: 146 Missouri
randavis
member
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member
Joined: Feb 2013
Posts: 146
Missouri
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I have a Sniper on my Challenger. It has a 511 stroker in it. The main issue I have had is RFI. The Terminator has a remote ECU that can be located away from the engine bay in a more friendly RFI environment. That being said, I have gotten mine to run very well after cleaning up some wiring and changing to a Denso alternator. I think the Terminator has more inputs and outputs that can be used. Good luck, which ever way you go.
74 Challenger, bought it new. In 1978 I replaced the original 318 with a 446 and 727. Mild cam, Jardine headers, and Holley Sniper EFI. New engine! 511" RB, Edelbrock Performer RPM heads, Eagle rotating assy, Comp hyd roller cam, Doug's 2" headers.
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Re: Sniper vs Terminator EFI
[Re: Dabee]
#3022190
03/09/22 01:24 AM
03/09/22 01:24 AM
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Joined: Feb 2003
Posts: 10,220 Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,220
Someplace you aren't
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The 1268 kit lacks a fuel pump, also not sure you get the wideband with it either, guessing not or it’d be mentioned.
I had an early Holley projection system on a 440. It worked well enough, but didn’t have the o2 and the mpg wasn’t good. I had a truck with a TQ that ran every bit as good as that system did. Only way I’d consider efi now is with a sensor. I think the options now are cool, but being older and wiser I see them all as being more complication and small improvement for an occasional use car. Occams Razor.
I want my fair share
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Re: Sniper vs Terminator EFI
[Re: SomeCarGuy]
#3022194
03/09/22 02:13 AM
03/09/22 02:13 AM
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Joined: Nov 2003
Posts: 3,449 Dandridge TN
Dabee
master
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master
Joined: Nov 2003
Posts: 3,449
Dandridge TN
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The 1268 kit lacks a fuel pump, also not sure you get the wideband with it either, guessing not or it’d be mentioned.
I had an early Holley projection system on a 440. It worked well enough, but didn’t have the o2 and the mpg wasn’t good. I had a truck with a TQ that ran every bit as good as that system did. Only way I’d consider efi now is with a sensor. I think the options now are cool, but being older and wiser I see them all as being more complication and small improvement for an occasional use car. Occams Razor. Haven’t seen a throttle body efi that doesn’t have an o2 sensor yet. Most don’t come with a fuel pump. If the do it’s us external. They really should have an in tank pump. External pumps work but I wouldn’t recommend using one. I seen a huge fuel mileage increase when I put the FASt 2000 on my 512 stroker. Having better control of the air fuel ratio helped but I believe having the ability to program the timing curve has the most influence on MPG.
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Re: Sniper vs Terminator EFI
[Re: Dabee]
#3022221
03/09/22 09:06 AM
03/09/22 09:06 AM
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Joined: May 2019
Posts: 6,291 nowhere
Sniper
master
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master
Joined: May 2019
Posts: 6,291
nowhere
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The 1268 kit lacks a fuel pump, also not sure you get the wideband with it either, guessing not or it’d be mentioned.
I had an early Holley projection system on a 440. It worked well enough, but didn’t have the o2 and the mpg wasn’t good. I had a truck with a TQ that ran every bit as good as that system did. Only way I’d consider efi now is with a sensor. I think the options now are cool, but being older and wiser I see them all as being more complication and small improvement for an occasional use car. Occams Razor. Haven’t seen a throttle body efi that doesn’t have an o2 sensor yet. Most don’t come with a fuel pump. If the do it’s us external. They really should have an in tank pump. External pumps work but I wouldn’t recommend using one. I seen a huge fuel mileage increase when I put the FASt 2000 on my 512 stroker. Having better control of the air fuel ratio helped but I believe having the ability to program the timing curve has the most influence on MPG. The Projection had an O2 sensor as an added cost option, not included. FWIW, it was a horrible setup. Put the 2Di on my Diplomat, it ran after a fashion, sprung for the O2 option, no difference in function. It did teach me a lot about how NOT to do a TBI setup.
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Re: Sniper vs Terminator EFI
[Re: RTSE4ME]
#3022222
03/09/22 09:11 AM
03/09/22 09:11 AM
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Joined: Mar 2003
Posts: 1,462 Martinsville, IN
cdwmotorsports
pro stock
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pro stock
Joined: Mar 2003
Posts: 1,462
Martinsville, IN
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I am using a stealth sniper and love it so far (Demon with a 451). Thus far it has only been "tuned" using the learn mode. I have no experience with the Terminator system.
eBay-cdwmotorsports
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Re: Sniper vs Terminator EFI
[Re: cdwmotorsports]
#3022293
03/09/22 12:17 PM
03/09/22 12:17 PM
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Joined: Nov 2003
Posts: 3,449 Dandridge TN
Dabee
master
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master
Joined: Nov 2003
Posts: 3,449
Dandridge TN
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I am using a stealth sniper and love it so far (Demon with a 451). Thus far it has only been "tuned" using the learn mode. I have no experience with the Terminator system. I hear ya. Everyone I know running a Sniper is happy with it. I’m now debating between the Atomic or Sniper. I like the Atomc only because the control module can be installed inside the vehicle. On the other hand I like the fact that you don’t need an ignition box with the Sniper just the harness to the coil and distributor. Anyone using the Holley Sniper EFI HyperSpark Distributor? This is for a street only application in a Federal Motors Truck Rat Rod.
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Re: Sniper vs Terminator EFI
[Re: AndyF]
#3022295
03/09/22 12:27 PM
03/09/22 12:27 PM
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Joined: Dec 2013
Posts: 4,691 Wichita
GY3
master
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master
Joined: Dec 2013
Posts: 4,691
Wichita
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The Atomic is dead, they are just selling what is left on the shelf. The Atomic 2 is basically a Sniper in disguise. No technical support for the true Atomics. A friend installed one a couple of years ago on his LS turbo '70 Chevelle and it was quickly obsolete. He pulled it all off and recently installed a Holley Terminator. Crazy how much he spent on the Atomic originally just to have it not supported shortly thereafter.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Sniper vs Terminator EFI
[Re: AndyF]
#3022298
03/09/22 12:34 PM
03/09/22 12:34 PM
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Joined: Nov 2003
Posts: 3,449 Dandridge TN
Dabee
master
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master
Joined: Nov 2003
Posts: 3,449
Dandridge TN
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The Atomic is dead, they are just selling what is left on the shelf. The Atomic 2 is basically a Sniper in disguise. . Now that I think about it you are absolutely correct. This makes my decision much easier. I’ll be going with the Sniper and the HyperSpark Distributor.
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Re: Sniper vs Terminator EFI
[Re: Dabee]
#3022320
03/09/22 01:43 PM
03/09/22 01:43 PM
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Joined: Jan 2005
Posts: 4,443 Michigan
MarkZ
Worthy
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Worthy
Joined: Jan 2005
Posts: 4,443
Michigan
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I am using a stealth sniper and love it so far (Demon with a 451). Thus far it has only been "tuned" using the learn mode. I have no experience with the Terminator system. I hear ya. Everyone I know running a Sniper is happy with it. I’m now debating between the Atomic or Sniper. I like the Atomc only because the control module can be installed inside the vehicle. On the other hand I like the fact that you don’t need an ignition box with the Sniper just the harness to the coil and distributor. Anyone using the Holley Sniper EFI HyperSpark Distributor? This is for a street only application in a Federal Motors Truck Rat Rod. I'm using their entire kit with the distributor, ignition box and coil. Was fairly painless to setup and I was already aware of head clearance issues thanks to Andy's article. I'm looking forward to fine tuning the spark map this spring.
1987 Fifth Avenue - 512/518/D60
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Re: Sniper vs Terminator EFI
[Re: Dabee]
#3022330
03/09/22 01:57 PM
03/09/22 01:57 PM
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Joined: Feb 2003
Posts: 10,220 Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,220
Someplace you aren't
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The 1268 kit lacks a fuel pump, also not sure you get the wideband with it either, guessing not or it’d be mentioned.
I had an early Holley projection system on a 440. It worked well enough, but didn’t have the o2 and the mpg wasn’t good. I had a truck with a TQ that ran every bit as good as that system did. Only way I’d consider efi now is with a sensor. I think the options now are cool, but being older and wiser I see them all as being more complication and small improvement for an occasional use car. Occams Razor. Haven’t seen a throttle body efi that doesn’t have an o2 sensor yet. Most don’t come with a fuel pump. If the do it’s us external. They really should have an in tank pump. External pumps work but I wouldn’t recommend using one. I seen a huge fuel mileage increase when I put the FASt 2000 on my 512 stroker. Having better control of the air fuel ratio helped but I believe having the ability to program the timing curve has the most influence on MPG. The higher cost atomic on that list comes with a fuel pump and mentions an o2. For 1268 bucks it appears you don’t get either.
I want my fair share
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