Fuel Injection
Burning Brakes
Joined: May 2017
Posts: 774
Likes: 375
From: Seattle WA
I went with the Sniper, Gas Tank, and the whole Hyperspark ignition. It works really well!
I will say that the more radical you cam is, you will want to eventually get it professionally tuned. That helped me a ton. And I picked up about 40hp (but lost some fuel economy).
The great part is that there is no more hard starting cold or hot (no vapor lock), the response is unreal, You get a ton of information from the little hand held (I also pumped it to my Dakota Digital gauges), and it is very consistent.
Cons are that you do lose some control. For a car with no computers in it, now you have one adjusting things. Being a software guy myself, I weighed that because I felt like I was giving up some control. Also the original feel of the gas pedal was SUPER touchy. Get one of these throttle arm extension because without it the throttle is way too stiff and touchy.
https://www.efisystempro.com/sniper/...ter-lever-1952
Overall I love it.
Here is the dyno run after I had it tuned (485hp and 514ft-lbs at the rear wheels)
Dr. Detroit
Joined: Mar 2012
Posts: 10,095
Likes: 4,022
From: New Braunfels Texas
Pros: Spot on A/F control...no more fussing with chokes, warm up, vapor lock......timing control is an awesome thing. Control handheld is easy to navigate.
Cons: Price, routing the fuel system.
Jebby
Cons: Price, routing the fuel system.
Jebby
Last edited by Jebbysan; Mar 6, 2020 at 06:51 PM.
Dr. Detroit
Joined: Mar 2012
Posts: 10,095
Likes: 4,022
From: New Braunfels Texas
Jebby
Burning Brakes
Joined: May 2017
Posts: 774
Likes: 375
From: Seattle WA
Thread Starter
Advanced
Joined: Apr 2009
Posts: 78
Likes: 4
From: Baytown Tx
What did you purchase for yours?
Holley 550-510K
Part Number: 510-550-510K
Sniper EFI Master Kit
Holley 550-510K
Part Number: 510-550-510K
Holley Sniper EFI Master Kit with Shiny Finish
Sniper EFI Master Kit
- Sniper Self-Tuning Shiny Throttle Body
- 3.5" Touch Screen
- Fuel System Kit
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Race Director
Joined: Sep 1999
Posts: 11,360
Likes: 382
From: Plano TX
I've heard from multiple sources that if you run a dual plane the divider has to be cut down at least 1/2". Or you can run a 1/2" open spacer I guess. Reason is the MAP sensor on the throttle body has to see vacuum from both banks or it will send an unstable signal the ECU making it run like crap.
Pro
Joined: Jan 2016
Posts: 502
Likes: 103
From: Reno Nevada
Not sure about the Sniper, but the Terminator throttle body has a vaccum sensor on one corner of the underside. With a single plane it can sense the vacuum continuously. With a dual plane it is only getting signal from 1/2 of the intake. With that said, I have a Terminator with an Air Gap dual plane. That intake has the divider cut down slightly. Have not started it yet, so hoping it works. If not, I will be milling the center divider a bit to allow it to obtain a proper signal.