FSJ Fuel Injection Tech

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Last post by Stuka « Tue Apr 16, 2013 6:37 pm

by Stuka » Tue Apr 16, 2013 6:37 pm

Topics that do not fall under this area as described will be moved or deleted. Which ever is more appropriate.

1: Topics or posts which are intended...

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Last post by Stuka
Tue Apr 16, 2013 6:37 pm

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Last post

List of LS swaps.

Last post by CU4WHLN « Mon Sep 07, 2020 6:05 pm
Replies: 22
by hutcho » Sat Nov 21, 2015 6:14 pm
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So mostly posting this so I can find it from my phone easier later. This is most of the LS swaps and their owners from about 10 pages of build...

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My build.. on the dead site . . .

LT Swap - not LS.
22 Replies

18586 Views

Last post by CU4WHLN
Mon Sep 07, 2020 6:05 pm
Edelbrock Pro-Flo 4 EFI System

Last post by MReese Wagoneer « Tue Sep 01, 2020 8:39 pm
Replies: 11
by DuxCadoo » Sat Jul 11, 2020 4:40 am

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I’m upgrading my 83’ Cherokee Laredo to this EFI. I have a Novak in-tank fuel pump, RobbMC power surge tank, RobbMC pressure regulator ordered as...

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Well I guess I will follow this as I have the 401 running on the carb right now,
But show some pics of your set ups !!!!

11 Replies

601 Views

Last post by MReese Wagoneer
Tue Sep 01, 2020 8:39 pm
Issue with hesitation on cold start

Last post by babywag « Wed Aug 19, 2020 7:58 pm
Replies: 60
by Theodore » Sat Aug 03, 2019 7:42 am
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First post

Am looking for some advice. After last weekend’s adventure replacing spark plugs & assorted EFI sensors (IAC, TPS, MAP), + we’ve now got a nice...

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It's not difficult to mod a regulator.
60 Replies

5444 Views

Last post by babywag
Wed Aug 19, 2020 7:58 pm
Refurbished Sniper FI 4150 For My Cherokee

Last post by ghcoe « Sun Aug 16, 2020 2:22 pm
Replies: 16
by ghcoe » Mon Dec 30, 2019 11:34 am

First post

Well one of my Christmas gifts was a OK to purchase a Holley Sniper FI unit for my Jeep. I was able to talk my wife into it since I was able to pick...

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I installed the air/fuel gauge and the choke kit.
Cold idle (choke closed) was 10.5:1. Might lean this out a bit, but I will wait till it gets a bit...

16 Replies

712 Views

Last post by ghcoe
Sun Aug 16, 2020 2:22 pm
trouble with Howell TBI install on 86GW

Last post by rocklaurence « Mon Jul 20, 2020 5:12 am
Replies: 3
by jcpianka » Fri Jul 17, 2020 2:19 pm

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Hi all. I want to start by saying i'm not all that smart or high tech. Ive had my 86 GW about five years and had a few issues but ive been getting it...

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Call Howell Tec support. I installed one of their units and the pump wasnt turning on--it was a loose connection at a plug. They were very helpful....

3 Replies

156 Views

Last post by rocklaurence
Mon Jul 20, 2020 5:12 am
Sniper Linkage issue

Last post by Wagnstuff « Wed Jul 15, 2020 9:17 pm
Replies: 5
by Wagnstuff » Mon Jul 13, 2020 10:42 am

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Installing Holley sniper on my ‘89 GW w/mopar stroker motor Than was running a Holley tbi/Howell system . Bought off eBay from Holley ( refurb)...

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thx for the photo fix Stuka!

5 Replies

369 Views

Last post by Wagnstuff
Wed Jul 15, 2020 9:17 pm
Edelbrock 2131 gasket requirements

Last post by Milktruck « Mon Jun 22, 2020 7:09 am
Replies: 1
by Milktruck » Mon Jun 22, 2020 6:46 am

First post

What's up y'all?

I've been enjoying the Sniper setup, but have to reseal my intake manifold. It's weeping from the front corner (behind the AC...

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OK - so after a call to Edelbrock support they DO NOT recommend an intake manifold gasket anymore. Just the valley pan gasket.

1 Replies

249 Views

Last post by Milktruck
Mon Jun 22, 2020 7:09 am
Sniper install - '88 GWag

Last post by Milktruck « Mon Jun 22, 2020 6:35 am
Replies: 26
by Milktruck » Fri Jan 03, 2020 12:28 pm
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Ho Ho Ho!

I made the decision right before Christmas that I need to go all in and fix the things that are bugging me about my GWag before I relegate...

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I plugged the EGR stuff - not necessary here at this time.
26 Replies

1324 Views

Last post by Milktruck
Mon Jun 22, 2020 6:35 am
in tank fuel pump

Last post by 1979bettywhite « Tue Jun 09, 2020 12:04 pm
Replies: 27
by ArchitectJS » Fri Jan 31, 2020 10:43 am
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see link--

any reason this wouldn't work, if I utilized it with my Holley Sniper upgrade?

I have to believe its going to work with the Cherokee...

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The initial transfer of the learn table probably helped the most. I followed the direction of the main admins on the holley forums. Here is what they...
27 Replies

1493 Views

Last post by 1979bettywhite
Tue Jun 09, 2020 12:04 pm
DATA INFORMATION

Last post by 1979bettywhite « Thu May 28, 2020 2:36 pm
Replies: 8
by DARREN LILLY » Fri May 22, 2020 4:58 pm

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Hi how do I retrieve data information from the system to be analysed to find faults in the system. Is there any form of OBD. Thanks

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It's pretty easy to datalog with the sniper system. First you need the software for your PC:

Next you need to run a data log either with the...

8 Replies

287 Views

Last post by 1979bettywhite
Thu May 28, 2020 2:36 pm
Dakota digital VHX

Last post by hutcho « Fri May 22, 2020 4:59 pm
Replies: 9
by hutcho » Wed Feb 12, 2020 4:36 pm

First post

Anyone running these yet? Mine is a 79 but I'm sure it's the same or similar throughout all the cluster types in this line. I am doing some research...

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86-91 are square. I'm pretty sure they won't work. I could be wrong though

Sent from my SM-N976U using Tapatalk

9 Replies

708 Views

Last post by hutcho
Fri May 22, 2020 4:59 pm
Sniper Cold Tuning

Last post by KJ Ryu « Wed May 20, 2020 4:59 pm
Replies: 6
by 1979bettywhite » Fri May 08, 2020 8:03 am

First post

First off, once up to temp, my system runs flawlessly.

On cold start, no real issues other than the initial first drop (2-3 seconds) after turning...

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I haven't gone beyond the basic tuning on mine. Too many exhaust leaks, and now the torque converter is rattling something fierce, so it isn't even...

6 Replies

353 Views

Last post by KJ Ryu
Wed May 20, 2020 4:59 pm
MSD Atomic EFI: Tuning Tuning Tuning

Last post by Dr. Marneaus « Thu May 14, 2020 12:19 pm
Replies: 419
by Dr. Marneaus » Tue May 24, 2016 9:04 am
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Well, I might as well get this thread started since I intend to move forward at a fairly quick pace. I traded off my spare wagoneer for a full MSD...

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So, still have very minor hunting issues, and the minor popping out the muffler issues, but otherwise the thing has been running great and normal. I...
419 Replies

57601 Views

Last post by Dr. Marneaus
Thu May 14, 2020 12:19 pm
Alternator back feeding, FI no shut off

Last post by Hspencer « Mon May 04, 2020 3:45 pm
Replies: 10
by tedlovesjeeps71 » Sun Apr 26, 2020 4:24 pm

First post

I’ve been tinkering with my Jeep (83 scrambler, 360 from a Waggy) and am a little curious. It’s been a bit fussy and somehow managed to melt the...

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When I installed my Holley sniper I used the yellow wire going to the ignition module. I didn’t have any run-up issues until I installed the Holley...

10 Replies

516 Views

Last post by Hspencer
Mon May 04, 2020 3:45 pm
Power on start up

Last post by KJ Ryu « Mon Apr 20, 2020 8:14 am
Replies: 3
by Veddy » Sun Apr 19, 2020 9:41 am

First post

I'm hoping someone can help. My GW is very sluggish off the line. I have made modifications and I'm struggling with where the issue is.
1991 GW,...

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It allows the Sniper to only use 2 injectors until you open the butterflies past a certain percentage.

3 Replies

296 Views

Last post by KJ Ryu
Mon Apr 20, 2020 8:14 am
Sniper / Hyperspark Install - 82 Cherk

Last post by ArchitectJS « Mon Apr 06, 2020 8:36 am

by ArchitectJS » Mon Apr 06, 2020 8:36 am

A couple of questions;

I have the EFI mounted and plumbed in. Linkages connected.

I plan on swapping the distributor next.

Anybody have any...

0 Replies

189 Views

Last post by ArchitectJS
Mon Apr 06, 2020 8:36 am
Holley Sniper EFI Returnless Self-Tuning Fuel Injection Systems 550-511D

Last post by CU4WHLN « Thu Apr 02, 2020 8:00 pm
Replies: 1
by Twagoneer » Tue Mar 31, 2020 4:20 pm

First post

Has anyone installed one of these with the in tank pump?
If so, was it hard to install the fuel pump? Any issues or concerns.
Getting ready to buy...

Last post

I just bought this set up.. Will be installing... in a few months most likely. It appears to me it should work. For my Gen 5 LT swap.
I sure hope...

1 Replies

239 Views

Last post by CU4WHLN
Thu Apr 02, 2020 8:00 pm
Oxygen sensor part number??

Last post by tedlovesjeeps71 « Thu Apr 02, 2020 7:10 am
Replies: 3
by tedlovesjeeps71 » Wed Apr 01, 2020 6:07 pm

First post

Ok, not sure what to look for. Trying to install the Hamilton fuel injection off Walter into my scrambler. Still an AMC 360. I noticed when I was...

Last post

My guess would be an o2 sensor from a 90's GM truck. He may even have it listed over on his site.
I looked all over both his site and Howell’s, no...

3 Replies

189 Views

Last post by tedlovesjeeps71
Thu Apr 02, 2020 7:10 am
FITech with HEI?

Last post by TeaBag « Sun Mar 29, 2020 8:49 am
Replies: 5
by hickchick67 » Mon Feb 24, 2020 9:51 pm

First post

First time FSJ owner. 1983 Chief with 401 from a 1976 Chief. My husband gave me a FITech EFI system as a gift. Now trying to install. Can you lock...

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I've been the FITECH timing control with a Jegs brand MSD dizzy for 2 years. It was not difficult to set up (there is plenty of guidance out there)...

5 Replies

536 Views

Last post by TeaBag
Sun Mar 29, 2020 8:49 am
Lokar / Sniper bracket

Last post by ArchitectJS « Thu Mar 12, 2020 8:09 am
Replies: 1
by ArchitectJS » Sun Mar 08, 2020 3:27 pm

First post

Need help, two questions:

My jeep has is 258 i6, and the PO had done a half-assed nutter bypass previously. I don't have the benefit of seeing how...

Last post

Ok, so I think I figured this out;

1 Replies

254 Views

Last post by ArchitectJS
Thu Mar 12, 2020 8:09 am
SURGE TANKS

Last post by gopher_6_9 « Wed Feb 19, 2020 1:15 pm
Replies: 28
by DARREN LILLY » Sun Jun 02, 2019 5:02 am
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Is the NUKE PERFORMANCE BILLET SURGE TANK, with triple internal pumps available in USA & if so is it suitable for the amc 360, this is available...

Last post

Installed same or similar pump and surge tank on mine. Works great.
28 Replies

3642 Views

Last post by gopher_6_9
Wed Feb 19, 2020 1:15 pm
Holley Sniper Tip, Tricks, Pros, Cons, Advice

Last post by 1979bettywhite « Fri Jan 31, 2020 9:00 am
Replies: 10
by 1979bettywhite » Wed Oct 30, 2019 8:53 am

First post

After reading about Melford's issues with his Sniper system, I thought it might be helpful for those running a Sniper system on their rigs to post...

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Think I am running a 14.1 AFR at cruise, so similar to what Darren said. I think I also bumped up my idle to around the 14.0 mark as well. Still...

10 Replies

897 Views

Last post by 1979bettywhite
Fri Jan 31, 2020 9:00 am
Hamilton EFI on 1972 Wagoneer

Last post by Renodemona « Wed Jan 22, 2020 7:06 pm
Replies: 3
by Renodemona » Sun Jan 19, 2020 5:59 pm

First post

Finally got everything installed and all the random electrical handled. Runs like a top.

I highly recommend Hamilton, he was easy to work with...

Last post

Absolutely, now I'll have more brain space to worry about other things!

3 Replies

269 Views

Last post by Renodemona
Wed Jan 22, 2020 7:06 pm
Random Holley Sniper EFI Question

Last post by Fury5 « Sun Jan 19, 2020 6:58 pm
Replies: 3
by Fury5 » Sat Jan 11, 2020 8:22 pm

First post

I am fixing to install a Holley Sniper 2-barrel system on my 1990 GW. I will be using the stock 2-barrel manifold. Do folks recommend reusing the...

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That's great news. When I took the freshly rebuilt carb off, I discovered that the mechanic who installed it had overtightened the nuts and cracked 3...

3 Replies

279 Views

Last post by Fury5
Sun Jan 19, 2020 6:58 pm
Fuel Sending Unit Interface Module

Last post by swconnelly22 « Sun Jan 12, 2020 10:50 am

by swconnelly22 » Sun Jan 12, 2020 10:50 am

91 GW with Holley Sniper and currently stock fuel tank with Holleys in line fuel pump. My goal is to have an in tank pump, a baffled tank, and more...

0 Replies

151 Views

Last post by swconnelly22
Sun Jan 12, 2020 10:50 am

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