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Thread: Sniper Injectors Ticking

  1. #11

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    Quote Originally Posted by Danny Cabral View Post
    However, the Holley EFI ECU has to have an actual fuel pressure sensor input for the Holley EFI CAN Bus gauge to display it.
    That's what I'm afraid of. The guy on the phone said it can, but I'm not sure he's right. And based on what you're saying, he's wrong. The product page for the fuel pressure gauge doesn't mention Sniper. That's why I called support in the first place.

  2. #12

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    Quote Originally Posted by schweigert View Post
    Not sure, but the Holley tech says the ECU has it and can output it to the additional Holley EFI gauges.
    So I can just buy this, and hook it up with just one wire to the Sniper EFI harness.
    https://www.holley.com/products/fuel.../parts/553-129
    Honestly just might go this cheaper route, and see if in an update they let the Sniper handheld screen show the fuel pressure.
    http://www.efisystempro.com/sniper/s...-psi-100187ERL
    That Holley Tech is incorrect. The Sniper (550-510, 550-511, & 550-516) has no way to measure the fuel pressure.
    That 553-129 gauge works on Holley EFI (HP, Terminator & Dominator) systems to display the fuel pressure, but will not display for the Sniper EFI.
    You will need to use a pressure gauge such as 100187ERL & AT100199ERL on the inlet side of the Sniper.

  3. #13
    Join Date
    Dec 2009
    Location
    Connecticut
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    19,289

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    Quote Originally Posted by Matt View Post
    That Holley Tech is incorrect. The Sniper (550-510, 550-511, & 550-516) has no way to measure the fuel pressure.
    Correct.

    You will need to use a pressure gauge such as 100187ERL & AT100199ERL on the inlet side of the Sniper.
    It's all in post #4.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  4. #14

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    Quote Originally Posted by Matt View Post
    That Holley Tech is incorrect. The Sniper (550-510, 550-511, & 550-516) has no way to measure the fuel pressure.
    That 553-129 gauge works on Holley EFI (HP, Terminator & Dominator) systems to display the fuel pressure, but will not display for the Sniper EFI.
    You will need to use a pressure gauge such as 100187ERL & AT100199ERL on the inlet side of the Sniper.
    Figures. So I can just run my 3/8" fuel line > NPT adapter with fuel pressure gauge > Sniper inlet.


  5. #15

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    That's what I did and it was very useful when I first installed the Sniper EFI. I had really high fuel pressure that turned out to be caused by a kinked return line. I can only imagine this would have given me problems down the road, and I wouldn't have known something was wrong with fuel pressure.

  6. #16

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    Awesome, yeah ordered the parts. Did you leave yours hooked up permanently? Also, seems like a real oversight for the Sniper EFI to not have a pressure gauge built in. ಠ_ಠ
    Last edited by schweigert; 06-19-2017 at 04:16 PM.

  7. #17

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    Danny shows in post #4, an Earls Schrader valve and low priced fuel pressure tester. A fuel pressure sensor is not a cheap option for the systems that support one. In theory, the fuel pressure regulator is supposed to be reliable. Most OEM EFI systems have a Schrader valve to check fuel pressure. Hope it's not a trend to have a fuel pressure gauge sticking out of a Sniper.

  8. #18

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    Hope it's not a trend to have a fuel pressure gauge sticking out of a Sniper.
    I hope not either, since you can't monitor the TBI mounted gauge while driving. The trend should be a gauge you can monitor while driving, IMO. A lot more than a regulator can affect your fuel psi.

  9. #19
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    19,289

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    I agree. It's not safe to have a fuel pressure gauge permanently mounted on the throttle body, due to engine vibration (possible failure, leak & fire).
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  10. #20

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    I personally don't see a problem with the gauges intended for on the carb/TBI mounted units.
    And they're great for under-hood tuning (at least for adjustable return regulators).
    It's just nice to know at a glance while driving, that the little sputter you just felt or worse isn't a fuel supply issue.

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