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Old 11-15-2018, 09:48 PM   #11
BO185
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Is there no option for a laptop pc over a tablet?
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Old 11-15-2018, 09:54 PM   #12
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You are so right, brain fart here. Used to be the GM TPI distributor was what Holley specified for most anything Chevy.

As you say, the dual sync is only required for sequential systems. And Holley didn't start pushing sequential until they had their own "dual synch" distributor. As I understand it, sequential is great for emissions and economy at low engine speeds, at higher rpm where you're making power the injection pulses are so close together it's not an advantage.

They also have a non-dual sync "Hyperspark" distributor they are now marketing for the Sniper. That and their dual synch distributor have Hall effect triggers instead of magnetic triggers which are better for the Sniper because Hall effect has less EMI noise. Turn that around and read that as the Sniper is susceptible to EMI noise. Regardless, the Edelbrock optical distributor has NO EMI because it's optical.

There's a lot of stuff to keep track of and understand here.
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Old 11-15-2018, 10:02 PM   #13
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optical ignition triggers bother me. I remember the multitude of unilite failures. I do find it interesting that the holley dual sync dist is a exact copy of the fast dual sync dist. with the exception of the pin out in the plug. heck it is even the same plug , just a different pinout. holley even sells an adapter for the plug on the fast dist. guess they figure people aren't smart enough to re-pin it.
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Old 11-15-2018, 10:05 PM   #14
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Quote:
Is there no option for a laptop pc over a tablet?
No, Edelbrock only has the tablet. As you may know, some of the Holley systems have a hand held controller with an SD card. But they allow you to use a laptop or pc either by transferring the SD card to the laptop or PC, or they do have a cable with dongle that let's you plug in direct with a laptop. Holley Sniper and Avenger are like this.

Remember this, the Edelbrock Pro Flow 4 sells for $1800-2100. A Holley multi-port system is approximately twice that, as was the old Pro Flow 3. Interestingly, Edelbrock has for now pegged their marketing on this system and has dropped their E-street TBI systems which "kind of " competed with Holley Sniper etc.
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Old 11-15-2018, 10:19 PM   #15
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Quote:
optical ignition triggers bother me. I remember the multitude of unilite failures.
I also think the Pro Flow 4's distributor may be made by Mallory.

Another example of optical distributors is the Chevy LT1 from the 90s. But its primary problems were not the optical triggering, it was venting and contamination issues due to its location under a water pump that was prone to leaking coolant onto the distributor after some miles. It was a rotor/contact problem, and the fact that you couldn't replace the rotor and distributor cap because it was a sealed assembly. On those cars if you had a distributor failure or a water pump failure you really need to replace both at greater expense than normal or you were screwed. By greater expense I mean that you had to replace the whole distributor at a cost of several hundred $$ instead of a cap and rotor for $20-30.

Hopefully optical sensor distributors are better than when Mallory introduced the Unilite. But I don't know. Most of the rest of the world uses magnetic or Hall effect. Or coil near plug.

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Old 11-15-2018, 10:20 PM   #16
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Quote:
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No, Edelbrock only has the tablet. As you may know, some of the Holley systems have a hand held controller with an SD card. But they allow you to use a laptop or pc either by transferring the SD card to the laptop or PC, or they do have a cable with dongle that let's you plug in direct with a laptop. Holley Sniper and Avenger are like this.

Remember this, the Edelbrock Pro Flow 4 sells for $1800-2100. A Holley multi-port system is approximately twice that, as was the old Pro Flow 3. Interestingly, Edelbrock has for now pegged their marketing on this system and has dropped their E-street TBI systems which "kind of " competed with Holley Sniper etc.
you do not need the sd card after initial loading with a holley touch screen if going to a lap top. it is only there as the touch screen has no extra internal storage space.
if starting off with a laptop you do not need the sd card at all. everything you need is in the holley pc software.
I must admit the price of the edelbrock is attractive though.
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Old 11-15-2018, 11:11 PM   #17
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Small point, you still have to buy the cable with the dongle.

But I guess that's like everything else.
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Old 11-16-2018, 12:05 AM   #18
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Small point, you still have to buy the cable with the dongle.
there is no cable with dongle to buy with the avenger, it is the same ecm as the hp. the ecu comes with a usb cord to connect to a laptop. it is 6 foot long , there are other lengths available though.
the sniper is the only holley efi needing a dongle cord, it adapts the can bus to be read on a pc with the sniper software. comparing the sniper tbi unit to the edelbrock is not really a good comparison. the avenger or hp systems are a better comparison.
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Old 11-16-2018, 01:33 AM   #19
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The Edelbrock system is interesting for sure. I wish they had done two things though.

First, I don't really like the idea of being tied to a tablet or phone to use the system. At all. I'd like to have a PC option like Holley offers.

Second, I wish they offered the harness to use with different hardware (i.e. you supply your own intake, rails, throttle body etc).

The price is attractive for sure, but I think Holley's Avenger and HP system is much more flexible.

If I were in the market for another EFI system, I'm not sure I'd jump in on this one yet. Too new...not enough customer review/install testimonies on the internet just yet.

I'd be curious to try this on my 355 if it'll clear the hood on my '72 Camaro, but with the intake being limited to a Victor Jr and the front intake style...not gonna try it on my 420 which has heads with intake ports that the Victor won't accommodate.

For the OP...I honestly think the best street option for a mild SBC with Vortec heads is a Vortec style Holley Stealth Ram (sometimes referred to as an HSR). I see them for sale all the time on thirdgen.org Classifieds used for like $500. Pick up the Holley HP harness and ECU for it for another $1.5K or so and you're set.

Last edited by hutchenc; 11-16-2018 at 01:37 AM..
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Old 04-26-2019, 08:01 PM   #20
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Coming back from a few months ago to clarify/correct some things I said.

The information I got previously on the Edelbrock Pro Flo 4 distributor, that it's optical, is incorrect. The distributor has a Hall effect sensor, and uses a different trigger window width on the #1 cylinder to identify it for use with the sequential injection. So it does the same job as a Holley or FAST dual sync which also have Hall effect sensors. The main difference being that it uses a single sensor instead of two.

There's no data logging, but the tablet they supply now has software that can do mulitiple screen captures and save them. Not real data logging, but a crude way of capturing data.

I also did some reading on the Edelbrock E-street, which was a throttle body system with the sensors and ECU in the throttle body. It's now discontinued. Apparently it has the same EMI problems that the Holley Sniper and FiTech have.

The Pro Flo 4 is not as powerful as Holley HP or the equivalent FAST system. But it's half the price.

There's lots of competition in this market and things change pretty rapidly and prices drop with the newer products. Holley recently introduced the Terminator X system for LS engines - $1000 for the base system. Great for swaps with no manifold, injectors, or distributor because you use the LS stock pieces. Look for them to package something like it with a manifold, distributor, and injectors to compete with the Edelbrock within a year or so.
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