Holley HP install and tips

[DaveP]

Re: Holley HP install and tips

No. You cannot directly control any solenoid with the Holley. Same rules apply for the TCC solenoid as they do for the A/C clutch above. You need spike protection.

I didn't bring it this up yesterday, be you and I have discussed this before. The stock wiring has a relay for the A/C clutch. It is alongside the fuel pump relay by the brake booster. Has 3 green wires (some with stripes), one pink/blk wire. The control for this relay is a (-) trigger that went to the SyTy ECM. You could restore this circuit, find the dk/grn wire at the SyTy ECM pin C9, connect it to a (-) on the Holley, and yer done.

 

[randy merritt]

Re: Holley HP install and tips

Thanks, Dave.

Would it be possible to use the negative trigger relay as shown in my attached picture? The Holley would not be directly grounding the TCC solenoid. Any feedback issues if I wire the TCC control this way? This would be relatively easy to do with my existing wiring setup.

Thanks again.

 

[randy merritt]

Re: Holley HP install and tips

No. You cannot directly control any solenoid with the Holley. Same rules apply for the TCC solenoid as they do for the A/C clutch above. You need spike protection.

I didn't bring it this up yesterday, be you and I have discussed this before. The stock wiring has a relay for the A/C clutch. It is alongside the fuel pump relay by the brake booster. Has 3 green wires (some with stripes), one pink/blk wire. The control for this relay is a (-) trigger that went to the SyTy ECM. You could restore this circuit, find the dk/grn wire at the SyTy ECM pin C9, connect it to a (-) on the Holley, and yer done.

OH, I did not understand at first, but I do now Dave. That is a great idea, and would be easy also.

 

[DaveP]

Re: Holley HP install and tips

I may be wrong about the Holley not being able to control a TCC directly. I'm pretty sure the Dominator can, so the HP may be able to as well. I'm sure the current limitations for the outputs are called-out in the installation instructions. Measure the solenoid resistance, then calculate the current flow at 12.0V with an online ohms law calculator and see if the current draw will be lass than allowed. It may be. Factory TCC solenoids have built in spike suppression diodes. So they are polarity sensitive.

Just wanted to clear this up, if someone finds this in a future search.

 

[JSM]

Re: Holley HP install and tips

I believe the Holley can control TCC directly, as i know it controls all the solenoids in a 60e/80e directly including TCC. There is most likely certains pins capable, and trigger by ground is probably the safest/easiest.

A fan or high amp load as Dave suggest no way. I would consider an AC clutch a high amp load, TCC is fairly low.

 

[randy merritt]

Re: Holley HP install and tips

After Jeff and Dave's posts about the Holley being able to handle the TCC ground, I ended up wiring the TCC lockup straight to the Holley using a ground output. I used the 12+ output that was freed up to control a solenoid that disengages the A/C compressor any time the TPS is above 70%. I wired the solenoid so the normally closed pin (87a) has the power running through it, and the trigger wire (86) opens the circuit and sends power to the 87 pin, which is hooked to nothing, thus disengaging compressor when TPS is above 70%.

 

[DaveP]

Re: Holley HP install and tips

Isn't it fun to think up stuff to make the Holley "do" then execute the wiring and actually get it to work?.

My Super Duty has a DEI remote start / alarm system I installed years ago for the previous owner. After I bought it from him, I ended up changing some things around on the DEI to take advantage of it's capabilities. The more I learned about what it had, the more stuff I thought up for it to "do". After a year of messing with it, the outputs are full, and the kinks and unintended consequences have all been worked out. Good, the dash can stay put now.

Anyway, glad you got your A/C control working.

 

[randy merritt]

Re: Holley HP install and tips

Speaking of that, Dave, I do now have an open 12V power source on my A/C disconnect solenoid that is not used and is only triggered when the TPS is above 70%. Maybe I could put a small illuminated sign in front of the passenger seat that lights up and displays "HOLD ON" or "OH SHIT", whenever the truck is above 70% TPS.

 

[Quickstop [UK]]

Re: Holley HP install and tips

Or it sends an SMS to a local tow truck warning them of impending business?

 

[randy merritt]

Re: Holley HP install and tips

I just did a quick spin around, and the TCC lockup works great with the ground trigger. BTW, with jumping the lockup trigger into the upper left ALDL connection for the TCC, the brake pedal release function works just like stock.

Mark, no tow truck needed here.....yet.

 

[Quickstop [UK]]

Re: Holley HP install and tips

Glad to hear it Randy - seems like you are having a great time with that truck :tup: I'm glad you are getting to enjoy it!

 

[randy merritt]

Re: Holley HP install and tips

In retrospect, after thinking of the many ways I could use the input/output functions of the Holley units, I would opt for the Dominator unit over the HP, even without needing the trans control.

This is if money allows and you have a good place in mind to mount it.

 

[Sean Krupa]

Re: Holley HP install and tips

Hey Randy,

I've been thinkin a lot about this Holley setup. I guess the main part is the "self learning" aspect. How quick before your Tune was on the money? Did you have to adjust the fuel/timing tables at all or did the Holley do it for you?

Rob and I have been messing with my Tune with Code59, I've been learning a lot, but it's hard Tuning via Email and doin all these Logs. I'd rather have something that could atleast have the Tune very close to being done with little adjustments.

Any more info would be appreciated!

 

[randy merritt]

Re: Holley HP install and tips

Hey Randy,

I've been thinkin a lot about this Holley setup. I guess the main part is the "self learning" aspect. How quick before your Tune was on the money? Did you have to adjust the fuel/timing tables at all or did the Holley do it for you?

Rob and I have been messing with my Tune with Code59, I've been learning a lot, but it's hard Tuning via Email and doin all these Logs. I'd rather have something that could atleast have the Tune very close to being done with little adjustments.

Any more info would be appreciated!

I believe you could get it "on the money" in a day or so. The phone and remote computer assistance for Steve Morris Engines was great, and really sped up the process. The Holley runs closed loop at all times and is very fast. All you do for the fueling is plug in a target AFR, and the computer adjusts your VE tables to hit that target. Once the correction factors are around 5% or so, the tune is done.

You do have to fill in the timing table yourself, and the guys at SME can help with that. One downside is there really isn't a way to easily run a knock sensor.

I still think this is the best investment I have made in my truck.

 

[randy merritt]

Re: Holley HP install and tips

You can call me if you have more questions. 850-251-8860

 

[Darin]

Re: Holley HP install and tips

Here's a silly question.

When I swapped the engine in my 93 colt to a turbo talon engine, I used a MegaSquirt ecu. I used all the factory talon wiring, but made an adapter harness at the ecu. I did this by getting a junk ecu, desoldering the main ecu connectors off if it, and making a plug and play harness with the MegaSquirt connector. So, you plug the harness into the ecu connectors you just removed, then the other end into the MegaSquirt.

I'm not very familiar with the syty harness, but would something like this be possible? It seems like you are using many of the factory sensors. Is there a difference in the injector wiring or something between the factory ecu and the Holley?

If I'm way off base, let me know.

 

[tunerpike]

Re: Holley HP install and tips

I a have a question as well... I noticed the the Holley can control Alky... How well does it control it? Is it progressive.... The reason I ask is because I have a new alkycontrol setup for my syclone but when I saw that the Holley will control it I thought about putting it on my supercharged tacoma.

What do the experts say???

 

[randy merritt]

Re: Holley HP install and tips

I a have a question as well... I noticed the the Holley can control Alky... How well does it control it? Is it progressive.... The reason I ask is because I have a new alkycontrol setup for my syclone but when I saw that the Holley will control it I thought about putting it on my supercharged tacoma.

What do the experts say???

It can not do progressive control on it's own from what I can tell. It seem like it can simply control on or off on alky. I am not using the Holley to control my alkycontrol setup, but just using the stand alone controller that came with the meth kit.

 

[randy merritt]

Re: Holley HP install and tips

Here's a silly question.

When I swapped the engine in my 93 colt to a turbo talon engine, I used a MegaSquirt ecu. I used all the factory talon wiring, but made an adapter harness at the ecu. I did this by getting a junk ecu, desoldering the main ecu connectors off if it, and making a plug and play harness with the MegaSquirt connector. So, you plug the harness into the ecu connectors you just removed, then the other end into the MegaSquirt.

I'm not very familiar with the syty harness, but would something like this be possible? It seems like you are using many of the factory sensors. Is there a difference in the injector wiring or something between the factory ecu and the Holley?

If I'm way off base, let me know.

I will have to digest that question and respond to it tomm.

 

[randy merritt]

Re: Holley HP install and tips

Here's a silly question.

When I swapped the engine in my 93 colt to a turbo talon engine, I used a MegaSquirt ecu. I used all the factory talon wiring, but made an adapter harness at the ecu. I did this by getting a junk ecu, desoldering the main ecu connectors off if it, and making a plug and play harness with the MegaSquirt connector. So, you plug the harness into the ecu connectors you just removed, then the other end into the MegaSquirt.

I'm not very familiar with the syty harness, but would something like this be possible? It seems like you are using many of the factory sensors. Is there a difference in the injector wiring or something between the factory ecu and the Holley?

If I'm way off base, let me know.

OK, what you did on your colt could be done with the Holley, ie making the factory harness work and plug into the Holley, but I got mine with a pre wired, fully terminated harness. I would think the pre wired harness would be much easier than trying to make the factory harness work.

I don't know if that answers your question, but you can call me to talk about this if you want. My phone # is posted in this thread.