Holley HP install and tips

[undrcvr_ty]

Re: Holley HP install and tips

Very good information here. What is the part number for the Holley HP EFI? Is it the 550-605?

How hard is it to tune?

 

[canadian]

Re: Holley HP install and tips

I know you've finished the install, but it's not much more effort to do the weatherpack connectors: http://www.syty.net/forums/showthread.php?p=1062649#post1062649

Lookin' good.

 

[randy merritt]

Re: Holley HP install and tips

The last two days, I have been hooking up some inputs and outputs. I wanted to control my TCC lockup on my 4l60. I spliced an input wire onto the DRAC with the wire that goes to the speedo.



I then did a lot of trial and error to get the parameters in the Holley to read the correct speed. Don't ask me why this was correct, but it worked the best to correlate with the factory speedo, and the TC locks at 40 MPH.



Here are the conditions for lockup: I used a relay to jumper the ground and TCC lockup on the ALDL.



Next, I wanted to control my fan on the trans cooler that I have mounted on the front of the truck. Here is my solution by wiring it into the Holley unit:

 

[Anarchy99]

Re: Holley HP install and tips

I'm going through alot of the same stuff on my fast xfi install

 

[RealFastV6]

Re: Holley HP install and tips

I am happy with my return on investment, and I believe if I added all the cost up to convert from stock to Code59, including tuning expenses, I think I would have been money ahead to just go with the Holley to start with. Of course it was not for sale at the time, but you get the point.

I don't mean to whore up your thread with my shitty opinions but THANK YOU for pointing this out.

I've said this again and again about the XFI in the Buick world before this, and the SyTys now. If you add up all the bullshit like the MAF Translators, the Chips, Wideband O2, Logging Software, USB Cables and then most importantly the TIME... you come out WAY ahead buying whatever standalone you're comfortable with and have the right support for (be it Holley or XFI or BS3, etc).

I completely agree - if you're going to go down the path of modding the truck, start early with a good standalone and good support.

:tup:

 

[0966Sy]

I don't mean to whore up your thread with my shitty opinions but THANK YOU for pointing this out.



I've said this again and again about the XFI in the Buick world before this, and the SyTys now. If you add up all the bullshit like the MAF Translators, the Chips, Wideband O2, Logging Software, USB Cables and then most importantly the TIME... you come out WAY ahead buying whatever standalone you're comfortable with and have the right support for (be it Holley or XFI or BS3, etc).



I completely agree - if you're going to go down the path of modding the truck, start early with a good standalone and good support.



:tup:

I firmly believe this, a standalone BS3 was the best thing I've done to my Ty besides coilovers. Only if I could go back in time and change all the money/time wasted on chip set ups. It makes tuning easier, you can to it if you know how to add/subtract.

I had an issue losing tach signal cranking, I used the same style 3m style splice connector on C101. I found that it was not making enough contact and intermittently dropping my tach signal. Stripping the wire and soldering the tach signal wire solved this problem. I'm not a big fan of those connectors, especially on important circuits that require correct reference voltage signals like a map circuits.

 

[wildphil]

Re: Holley HP install and tips

I don't mean to whore up your thread with my shitty opinions but THANK YOU for pointing this out.

I've said this again and again about the XFI in the Buick world before this, and the SyTys now. If you add up all the bullshit like the MAF Translators, the Chips, Wideband O2, Logging Software, USB Cables and then most importantly the TIME... you come out WAY ahead buying whatever standalone you're comfortable with and have the right support for (be it Holley or XFI or BS3, etc).

I completely agree - if you're going to go down the path of modding the truck, start early with a good standalone and good support.

:tup:

Some of your points I agree with. And I plan do plan on installing a Holly stand alone unit in my Black Ty soon. For a more heavily modded truck its the only way to go. Also if having time to spend on tuning is a issue the stand alone is the one to go with.

But Code59 has its place. In a lightly modded or stock truck it is pretty easy to get a good tune. And as for cost code code59 is much cheaper than a stand alone unit. And there is also turbotweek. I haven't used it myself but it seems to be working well on our trucks.

It just depends on the truck, owner, and how much money and time the owner wants to invest in tuning. Code59 on my Royal truck. It is working great. No need to look at anything else for it.

 

[randy merritt]

Re: Holley HP install and tips

Some of your points I agree with. And I plan do plan on installing a Holly stand alone unit in my Black Ty soon. For a more heavily modded truck its the only way to go. Also if having time to spend on tuning is a issue the stand alone is the one to go with.

But Code59 has its place. In a lightly modded or stock truck it is pretty easy to get a good tune. And as for cost code code59 is much cheaper than a stand alone unit. And there is also turbotweek. I haven't used it myself but it seems to be working well on our trucks.

It just depends on the truck, owner, and how much money and time the owner wants to invest in tuning. Code59 on my Royal truck. It is working great. No need to look at anything else for it.

I can agree with that. The real shine of the Holley is it's ability to self learn. The Holley is best for someone who is planning on upgrades and more upgrades in the future. Again, the self learning makes integrating an getting the most out of an engine modification (cam, turbo, injectors, etc.) very easy.

 

[Quickstop [UK]]

Re: Holley HP install and tips

Hahaha - it's all about the timing :lol:

Now, I'd love a Holley but then, PCS, PLX, C59 etc. made sense. Wonder how much I could trade in all my C59 stuff for. Holley sure does get high praise round here.

Will be very keen to see your performance Randy. I feel like 22psi that turbo is just getting warmed up though...

 

[QuinnSY]

Re: Holley HP install and tips

Every time I look at this thread again I get more convinced to get the Dominator! Thanks for the documentation and updates Randy, It is very helpful and informative. :tup:

 

[0966Sy]

I did a write up on my install BS3 standalone harness, I'll say it's not a novice job. I tried my best to help share installation tips/info as Randy has. Modifying the bulkhead fuse panel harness engine side is the most difficult part about the job. If someone could step up and make a harness that is designed for use with the BS3, Holley, FAST I think more would install these systems. Doing a plug and play harness is just risky having all the old wiring/connections.

 

[randy merritt]

Re: Holley HP install and tips

I did a write up on my install BS3 standalone harness, I'll say it's not a novice job. I tried my best to help share installation tips/info as Randy has. Modifying the bulkhead fuse panel harness engine side is the most difficult part about the job. If someone could step up and make a harness that is designed for use with the BS3, Holley, FAST I think more would install these systems. Doing a plug and play harness is just risky having all the old wiring/connections.

I'm not sure if this is what you are speaking of, but the Holley came with a new harness that ran from the CPU to all the sensors and injectors. It was made for a fuel injected V6. It was not perfect, but much easier than starting from scratch. I did not modify the factory wiring, but rather left it in place in case someone in the future wanted it back to stock (I doubt this will ever happen).

 

[0966Sy]

I'm not sure if this is what you are speaking of, but the Holley came with a new harness that ran from the CPU to all the sensors and injectors. It was made for a fuel injected V6. It was not perfect, but much easier than starting from scratch. I did not modify the factory wiring, but rather left it in place in case someone in the future wanted it back to stock (I doubt this will ever happen).

The BS3 came with a very nice standalone engine harness, I'm talking about removing the stock engine harness from the fuse panel bulkhead connector. Basically modifying the factory harness into one for the instrument panel alone. Nothing joins with the BS3 engine harness. It eliminates a lot of unused old wiring.

 

[randy merritt]

Re: Holley HP install and tips

The BS3 came with a very nice standalone engine harness, I'm talking about removing the stock engine harness from the fuse panel bulkhead connector. Basically modifying the factory harness into one for the instrument panel alone. Nothing joins with the BS3 engine harness. It eliminates a lot of unused old wiring.

I got you. I did not go that far and remove the stock harness, although I did remove the stock ECU. It would clean things up quite a bit to remove my now unused wires.

 

[DaveP]

Re: Holley HP install and tips

None of wires in the engine harness at the bulkhead connector have anything to do with engine management. All of the stock wires at C100 will remain, and be needed, regardless of the ECM system used. Like the 4 wires for the wipers, 2 red power wires, 1 purple starter wire, oil and temp gauges, 2 VSS (needed for stock DRAC and speedo), alternator turn-on, and possibly the TCC (2 wires) and fuel pump wiring (2 wires) will be needed as well. If the distributor / coil ignition is reused, then the pink IGN wire will still be needed too.

Custom installations require custom wiring solutions. Each individual installer will come to his own conclusion as to how he will execute the necessary wiring mods dependent on his understanding of what needs to be done, and how he chooses to perform them.

Randy's installation is one guy's way. He had a little help understanding the stock wiring, and how to interface the Holley to things like the TCC, A/C and fuel pump. :grin:. He got it dunn and working within his skill set, with a little help. Good enough. Someone like MattW or myself might do it differently, or accomplish it quicker, but so what? If it works, it works.

Good job Randy.

 

[RealFastV6]

Re: Holley HP install and tips

I think you're right Dave, nothing (or maybe very little) actually gets removed from the Bulkhead C100 "side" unless you're deleting other stuff at the same time.

If you're going to remove the stock ECU wiring though, you do need to seperate the two "sides" to the harness, and this is probably best done by pulling the ECU, feeding the plug through the firewall, removing each plug from drivers side to passenger side across the engine, and then unplugging the C100 connector from the bulkhead. Then with it all laid out on the floor, you can seperate the two into what's really the engine harness and the power \ inst panel harness. They problem is that they're loomed and routed together even though there's actually very little that crosses between the two.

This applies almost universally for LS1 Swaps, XFI\FAST Installs, Holley install with the custom harness, etc.

http://www.syty.net/forums/showpost.php?p=1053339&postcount=5

 

[sytyguy]

Re: Holley HP install and tips

None of wires in the engine harness at the bulkhead connector have anything to do with engine management. All of the stock wires at C100 will remain, and be needed, regardless of the ECM system used. Like the 4 wires for the wipers, 2 red power wires, 1 purple starter wire, oil and temp gauges, 2 VSS (needed for stock DRAC and speedo), alternator turn-on, and possibly the TCC (2 wires) and fuel pump wiring (2 wires) will be needed as well. If the distributor / coil ignition is reused, then the pink IGN wire will still be needed too.

Custom installations require custom wiring solutions. Each individual installer will come to his own conclusion as to how he will execute the necessary wiring mods dependent on his understanding of what needs to be done, and how he chooses to perform them.

Randy's installation is one guy's way. He had a little help understanding the stock wiring, and how to interface the Holley to things like the TCC, A/C and fuel pump. :grin:. He got it dunn and working within his skill set, with a little help. Good enough. Someone like MattW or myself might do it differently, or accomplish it quicker, but so what? If it works, it works.

Good job Randy.

Amen.

I had a sit down with the guys at Holley last week concerning some new products (some for our market, some not) and Rick asked me if there would be any great demand for a specific SyTy harness. I told him not likely as each does it their own way (as evidence by the fact that only 3 Holley orders [of the 17 I've sold on here] have the exact same parts) and that the currently available parts are adequate, if not ideal.

 

[fivetodrive]

Re: Holley HP install and tips

I am really debating on going this route. I just wish the HP had trans control...

And you have sold 17 of them? What have you sold the most of? Sorry to hijack...

 

[RealFastV6]

Re: Holley HP install and tips

Without having anything to look at in front of me... is the C100 "side" of the harness the same for SyTy and regular S series?

 

[randy merritt]

Re: Holley HP install and tips

I am really debating on going this route. I just wish the HP had trans control...

And you have sold 17 of them? What have you sold the most of? Sorry to hijack...

The installation of the Dominator is very similar, other than the fact that the Dominator can control an electronic transmission. They both share the same main harness. After messing around with this for a while, I could see where having more than 4 inputs and 4 outputs would be useful also.