HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech) - Chevelle Tech
EFI Caution: Beyond here be monsters...

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post #1 of 339 (permalink) Old Oct 29th, 16, 3:54 PM Thread Starter
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Thumbs up HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

OK...rather than waste a bunch of 2 finger keyboard pecking, I will TRY to abbreviate this thread, as much as possible.

Car: 1971 Chevelle SS, 439ci BBC, Turbo 400, 3.90 12 bolt rear. Street/Strip Toy, that's been 11.31@117 with 4.10 gears, and a looser converter....

Have had a Fitech GO-EFI4 setup on my car since December 15, 2015.

Car was running great, but after 10 months of experiencing, and seeing others deal with Fitech horrible service, and very inconsistent tech advice, I myself, had had enough....As for the Fitech...it's been sold....

I like the look, and added features of the HOLLEY SNIPER setup. My hope is also that should any tech help be needed, they'll better handle it, since that is/was the general consensus when Googling around about Holley technical support.

ANYWAY...Install was a breeze, since I already had the O2 bung in place, the fuel system done, and a good bit of the wiring could be retrofitted to the new setup...

Some PROS & CONS I will share...

PRO's:
Wideband O2 sensor harness is longer, allowing easier connection and routing
Comes VERY complete...throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well...
PLENTY of wire to hook up ANY engine
Seems to LEARN much faster than the Fitech did.
The handheld is MUCH easier to Navigate. It comes with a stylus, but I found it works just fine with my fat sausage fingers, LOL...
Can control nitrous activation and delayed activation, ignition timing, AC idle, etc.

CON's:
Have yet to see any info on how to datalog, or more importantly, how to view a datalog, once you do one??? (Not sure if that's part of the software that's coming, or not?)
Can't use my $75 throttle cable bracket, as linkage is out farther than a carb, or the Fitech was.
Handheld is hardwired to the cable (I'd rather it unplug, but maybe it's just different, and I'm used to the old one?)
Both the COOLANT and WIDEBAND sensors are different (no biggie for anyone doing a 1st time install, but it sucked knowing I have a spare O2 sensor, that is now worthless...Hopefully, Holley will share the BOSCH PART #....
Maybe not a "con", but the handheld is almost "too busy"...there's no way you can drive and see what is going on, with just a quick glance...I'm sure it'll get easier with some drive time...Like I said, not really a "con", but worth mentioning...
Handheld's "cradle" kinda sucks...It's like an EZ Pass cradle. I really liked my Fitech's suction cup mount, and actually used it for my test drive...

and that's about it...well, except for I did not get that cool looking sticker in the box...Kinda bummed about that.



INITIAL IMPRESSIONS:
It is BADA$$... It starts INSTANTLY, but you MUST let it do it's PRIME CYCLE.
Accelerator pedal is almost a bit too sensitive...I found after an hour or so of driving, it was much better....might have just been since it was not really "learning" yet...
Car idles better than ever, with only an hour's learning.
Car runs phenomenal...It always ran real well with the Fitech, and did so up until I removed it, BUT...it was sometimes "not 100%", if that makes sense? In other words, it may scream one time through the gears, then almost hold back a little the next time, but no rhyme or reason, and very intermittent...
Every time I went WOT, it was 100%...or more, Obviously, way too early to say it's just a fluke, or whatever...but we shall see.

Here's a COLD FIRST START:
(battery should have been charged, but you get the point)
https://youtu.be/4fVmCW8Svpo

Here's a HOT START: (after a 5 minute gas stop)
https://youtu.be/_AcJBo_v6t0

Here's plenty of pics, coming up:

From car on the lift, Fitech on the car, ready to start, to lights out, time to go home...in this series, lol.
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Last edited by rel3rd; Oct 29th, 16 at 4:57 PM.
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post #2 of 339 (permalink) Old Oct 29th, 16, 3:59 PM Thread Starter
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Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

Out of the box HOLLEY, some side by sides, O2 harness differences, and the Holley on the intake...then the fun begins...wiring...

Sorry, but I wasn't about to try snapping pics while doing the wiring...I was in my zone.
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Last edited by rel3rd; Oct 29th, 16 at 4:14 PM.
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post #3 of 339 (permalink) Old Oct 29th, 16, 4:03 PM Thread Starter
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Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

Some shots of the handheld screen, powered up

Existing fuel lines re-used with no mods

Main harness, tucked down near the MSD box
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post #4 of 339 (permalink) Old Oct 29th, 16, 4:08 PM Thread Starter
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Thumbs up Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

2 more handheld screens, when running, and some stuff stuck to my tires after test drive...not sure what it is, or what happened there???
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post #5 of 339 (permalink) Old Oct 29th, 16, 4:19 PM
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Chris
 
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Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

how many cfm's is the Holley rated to? It would seem the FiTech should flow more.

Do they offer a 8 injector unit?

Have you been able to see your duty cycle with the Sniper?

Do they offer it in hardcore grey?

1971 Chevelle SS454 4 speed, 3.31 Posi

Youtube Channel. https://www.youtube.com/user/SS454LS6
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post #6 of 339 (permalink) Old Oct 29th, 16, 4:24 PM Thread Starter
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Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

Quote:
Originally Posted by -SS454- View Post
how many cfm's is the Holley rated to? It would seem the FiTech should flow more.

Do they offer a 8 injector unit?

Have you been able to see your duty cycle with the Sniper?

Do they offer it in hardcore grey?
800cfm, and has FOUR 100# injectors, instead of four 80#ers...they say good to 650hp.

They have not released their 8 injector system yet.

They have the "shiny", like I got, and the Black Ceramic...

https://www.holley.com/products/fuel.../parts/550-511

Also, the "standard" unit that I have, can control timing, as well as nitrous activation, delay, etc......
I believe it also said it will be able to handle boost, and a 2 step, with the software, once available, but don't quote me on that.

edit, duty cycle % was very low at cruise....didn't/couldn't see at wot, until I figure out how to datalog.
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post #7 of 339 (permalink) Old Oct 29th, 16, 4:40 PM
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Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

Bob, thanks for the info. A tbi injection is on my radar, the poor after sale help from fitch took them off my list. I will be following this thread closely. Thinking out loud,I am considering using the holley frame mounted pump. Could I use the Corvette fuel filter/pressure regulator & run it without a return line?
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post #8 of 339 (permalink) Old Oct 29th, 16, 4:51 PM Thread Starter
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Bob
 
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Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

Quote:
Originally Posted by 1967 chevelle malibu View Post
Bob, thanks for the info. A tbi injection is on my radar, the poor after sale help from fitch took them off my list. I will be following this thread closely. Thinking out loud,I am considering using the holley frame mounted pump. Could I use the Corvette fuel filter/pressure regulator & run it without a return line?
Gary, I would "think" you could, but hopefully the Holley guys will chime in...

1971 Chevelle SS "439" 2.1 tons of fun...
11.31@117 w/4.10's, 4200+ stall, QFT SS-830 carb
11.72@115 w/3.90's, 3300 stall, and Fitech GoEFI4
11.51@116 w/3.90's, 3300 stall, and Holley Sniper EFI
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post #9 of 339 (permalink) Old Oct 29th, 16, 5:21 PM
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Steve
 
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Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

Quote:
Originally Posted by rel3rd View Post
2 more handheld screens, when running, and some stuff stuck to my tires after test drive...not sure what it is, or what happened there???
So was this a bolt on and go affair? An AFR reading of 13.8 kinda hints at that. I really don't know how you ever got your FiTech to run at an AFR of 16. My car backfired and blew flames out of the throttle body when blipping the throttle at an AFR of 15.

Anyway, looks like you are having fun. Sticky stuff = fun

The throttle linkage shoulda been silver like the body.

What's with the slot in the rear throttle linkage? Fronts and rears are linked 1:1 right? Almost looks like a mechanical secondary carb. Might just be my eyes playing tricks on me.
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350/350+, 700R4
FiTech GoEFI 4 600HP Fuel Injection
Dropped 2.5 - Wannabe Pro Cruzer
'68 P-11 Norton
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post #10 of 339 (permalink) Old Oct 29th, 16, 5:37 PM Thread Starter
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Bob
 
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Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

Quote:
Originally Posted by Schwany View Post
So was this a bolt on and go affair? An AFR reading of 13.8 kinda hints at that. I really don't know how you ever got your FiTech to run at an AFR of 16. My car backfired and blew flames out of the throttle body when blipping the throttle at an AFR of 15.

Anyway, looks like you are having fun. Sticky stuff = fun
Steve, if it ain't fun, I ain't doing it anymore.

Since I had the fuel system, wideband O2 bung, and coolant sensor bung all already there, yes, it was about as close to "Bolt On & Go", as it could be...I only entered the basics (cubic inch, 8 cylinder, idle rpm, cd ignition, and 1 more, I think?...and have done ZERO tuning/tweaking. Default is 13.6 IDLE, 14.0 CRUISE, and 12.5 WOT. It interpolates between the 3.

Just one wire different, so instead of "splicing" into the tach feed wire, the tach output from MSD goes to the harness, and then one wire goes from Harness 2, to the actual tachometer, and Oh wait..., I had to cut the air cleaner stud...LOL.

1971 Chevelle SS "439" 2.1 tons of fun...
11.31@117 w/4.10's, 4200+ stall, QFT SS-830 carb
11.72@115 w/3.90's, 3300 stall, and Fitech GoEFI4
11.51@116 w/3.90's, 3300 stall, and Holley Sniper EFI
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post #11 of 339 (permalink) Old Oct 29th, 16, 5:41 PM Thread Starter
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Bob
 
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Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

Quote:
Originally Posted by Schwany View Post

The throttle linkage shoulda been silver like the body.

What's with the slot in the rear throttle linkage? Fronts and rears are linked 1:1 right? Almost looks like a mechanical secondary carb. Might just be my eyes playing tricks on me.
Yeah, shiny would have looked better, but it's all but invisible with air cleaner on.

I believe they are 1:1, although I did not verify that.

But you're right, linkage looks like on one of their carbs, which is fine with me. I never cared for the link on the Fitechs. I never had a problem, but it looked like it was too much slop in the end links, if that makes sense?

1971 Chevelle SS "439" 2.1 tons of fun...
11.31@117 w/4.10's, 4200+ stall, QFT SS-830 carb
11.72@115 w/3.90's, 3300 stall, and Fitech GoEFI4
11.51@116 w/3.90's, 3300 stall, and Holley Sniper EFI
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post #12 of 339 (permalink) Old Oct 29th, 16, 5:42 PM
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Steve
 
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Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

Thanks for the info on the connectors. That would slow down a quick swap. Stay out of trouble with that arrest me Red car. Nice ride Bob
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350/350+, 700R4
FiTech GoEFI 4 600HP Fuel Injection
Dropped 2.5 - Wannabe Pro Cruzer
'68 P-11 Norton
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post #13 of 339 (permalink) Old Oct 29th, 16, 5:50 PM
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Steve
 
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Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

Quote:
Originally Posted by rel3rd View Post
Yeah, shiny would have looked better, but it's all but invisible with air cleaner on.

I believe they are 1:1, although I did not verify that.

But you're right, linkage looks like on one of their carbs, which is fine with me. I never cared for the link on the Fitechs. I never had a problem, but it looked like it was too much slop in the end links, if that makes sense?
I think it would have to be 1:1. Otherwise, Holley must have done some very interesting and difficult fuel mapping to accommodate a delayed secondary throttle opening. I'm sure I'm over thinking it with the one brain cell I have remaining.

Thanks again for the updates
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'65 Chev El Camino
350/350+, 700R4
FiTech GoEFI 4 600HP Fuel Injection
Dropped 2.5 - Wannabe Pro Cruzer
'68 P-11 Norton
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post #14 of 339 (permalink) Old Oct 29th, 16, 5:56 PM
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Steve
 
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Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

Quote:
Originally Posted by rel3rd View Post
Steve, if it ain't fun, I ain't doing it anymore.

Since I had the fuel system, wideband O2 bung, and coolant sensor bung all already there, yes, it was about as close to "Bolt On & Go", as it could be...I only entered the basics (cubic inch, 8 cylinder, idle rpm, cd ignition, and 1 more, I think?...and have done ZERO tuning/tweaking. Default is 13.6 IDLE, 14.0 CRUISE, and 12.5 WOT. It interpolates between the 3.

Just one wire different, so instead of "splicing" into the tach feed wire, the tach output from MSD goes to the harness, and then one wire goes from Harness 2, to the actual tachometer, and Oh wait..., I had to cut the air cleaner stud...LOL.
I really did not like working with those 1 hair thickness wires on the FiTech to get the tach signal. I like the direct connect to the MSD. Did Holley use some standard gauge wire there to go to the tach, like 14?

'65 Chev El Camino
350/350+, 700R4
FiTech GoEFI 4 600HP Fuel Injection
Dropped 2.5 - Wannabe Pro Cruzer
'68 P-11 Norton
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post #15 of 339 (permalink) Old Oct 29th, 16, 5:59 PM
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Chris
 
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Re: HOLLEY SNIPER INSTALL & REVIEW (Replaced Fitech)

"I really don't know how you ever got your FiTech to run at an AFR of 16. My car backfired and blew flames out of the throttle body when blipping the throttle at an AFR of 15. "

My car is at 14.5:1 now and have been 15.5 with no issues.
This is on an engine with 7" of vacuum.
I guess some of us got good units and some not so good.

Good to hear it's working fine for you Bob.
Keep us updated.
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73 nova,3515#(all steel)406ci N/A, best 1/4,1.45 '60,6.75@100.48,10.6 @ 122.38, short shifting,NO tuning!

http://www.youtube.com/watch?v=ng86PsGUcTY
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