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Old 08-11-2019, 01:50 PM   #1
david1550
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Default holley sniper 4500 efi

has anyone used one of these rather than a blow through carburetor https://www.summitracing.com/parts/s...-842?rrec=true. it seems like a economical way to do fuel injection for a somewhat lower horsepower combination. if you have used it, what's your opinion of the system good or bad. what do you like or dislike?
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Old 08-12-2019, 12:35 PM   #2
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Default Re: holley sniper 4500 efi

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Old 08-12-2019, 02:39 PM   #3
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I think Steve Morris had a video up a while back using the 1200hp sniper on a mild boosted big block.
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Old 08-12-2019, 03:47 PM   #4
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Default Re: holley sniper 4500 efi

My buddy used a 4150 style sniper efi system on his 540" with a belt driven supercharger and it is a beast. Marine engine with close to 1200hp, super easy with auto tune using the wide band system.
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Old 10-04-2019, 03:50 PM   #5
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I have the 4150 kit (pn 550-513 I believe) on a single turbo 400ci sbc. Seems great so far, I've been tuning with a laptop and is very easy to learn. This is my first time tuning efi also.
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Old 10-04-2019, 10:29 PM   #6
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Default Re: holley sniper 4500 efi

Quote:
Originally Posted by Rebird View Post
My buddy used a 4150 style sniper efi system on his 540" with a belt driven supercharger and it is a beast. Marine engine with close to 1200hp, super easy with auto tune using the wide band system.
What fuel hes using??
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Old 10-13-2019, 08:48 AM   #7
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I have the 1250 supersniper on a 418 ford na motor. They thing has been great. Most of the problems people have with them are install error. It’s been a great easy way of learning EFI for me. I am hoping to put twin s366 in the near future.
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Old 10-14-2019, 10:08 PM   #8
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Default Re: holley sniper 4500 efi

Super Sniper 1250 with a ProCharger here. It has been great. It really made me up my game on wiring! lol. Initial install did not go so well but I studied up, rewired and all is well now. Pump gas, 10 PSI.
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Old 10-19-2019, 04:19 PM   #9
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Default Re: holley sniper 4500 efi

We have a 1250 Super Sniper with a Procharger on my wife's car. Works great so far. We're at about 120 passes with it and she finished Drag Week with it in September.


Pretty great unit with great capabilities for the money. If you have any questions feel free to ask
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