T56 Reverse Lockout

ckruzer

ckruzer

Infidel
Joined
Jul 2, 2015
Location
asheville nc
I know a few of yalls are goFast builders at one point before you went yeti 4wd, or still are.

Question. About to drop in the engine/trans in the corvette soon. I like to have as many ducks in a row to reduce the mount of "fuks" said because I shoulda woulda coulda

From my understanding most guys wire in their reverse lockout with their brake switch. What are you thoughts on that? What about just deleting it? I dont forsee accidently shifting into reverse when downshift (up travel) from 6 - 5th

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A note of reference
Not wiring the solenoid, you have to "Muscle" it into Reverse
Removing the solenoid makes it "free n easy" to shift into reverse
Using the above spring, is the blend of the two. It wont 'accidently' slip into reverse, it will have resistance. You wont need to be Hulk to get it in tho

My above question is this delete option ($55) vs actually wiring it in with the brake switch. Technically its feasible to wire to a toggle as well (weird?)
 
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Bebop said:
I've had it wired on an output triggered from a Holley ECU.
Click to expand...

I only have 4 outputs on the terminator. I didn’t get the dominator.

Already spoken for:
Boost controller, fuel pressure sensor, vss

Need to be conservative lol or I’ll be adding canbus costs to the build lol
 
ckruzer said:
I only have 4 outputs on the terminator. I didn’t get the dominator.

Already spoken for:
Boost controller, fuel pressure sensor, vss

Need to be conservative lol or I’ll be adding canbus costs to the build lol
Click to expand...
Fuel pressure sensor and VSS are inputs, not outputs.
TerminatorX has 4 inputs (white wires) and 4 outputs (grey wires).
Boost controller will take one output, meaning you have 3 left.
CANBus is already there and you'll be using it at no cost when you add a Holley screen, since this is how it communicates.
Edit for more tech : VSS could be wired directly into the dash and free up another input, if needed. You can also share that data with the ECU from the screen via CANBus (still no cost involved, it does it natively).
 
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Bebop said:
Fuel pressure sensor and VSS are inputs, not outputs.
Boost controller will take one output, meaning you have 3 left.
CANBus is already there and you'll be using it at no cost when you add a Holley screen, since this is how it communicates.
Click to expand...

I did go with the lockout delete

Yes you are correct. I was lazy typing.

I have 4 Outputs and 4 inputs with the Terminator X from my understanding
Outputs: Fan 1, Fan 2 (look into using output to trigger two solenoids - operate both fans off one?)
Boost control. So thats one possibly two outputs leftover

Inputs: VSS (option if i cant fit gps module well), Fuel pressure,
Of the inputs, one is 12v, one is Grd, one is 5v, and one is X?

Lots to learn mid chassis rewire! Lmao
 
I added some more tech above.

Fuel pressure is not an extra input, it's already part of the holley standard so you don't use an input for that.

Outputs are all negative, an can be PWM controlled.
Inputs are of various types, good read here:

www.havocspeed.com

HolleyEFI – What’s the deal with inputs and outputs? - Havoc Speed

This guide is an attempt to make sense of Holley EFI’s systems input/output functionality in their HP and Dominator ecu’s. If anything was missed, feel free to let us know, leave in a comment below, call or email us. If you have a question that wasn’t answered here, we’re happy to…
www.havocspeed.com www.havocspeed.com


You can use different fans that could be PWM controlled or a splitter for the output, but in your case since you already deleted the reverse lockout, this conversation is probably a moot point.
 
Bebop said:
Fuel pressure is not an extra input, it's already part of the holley standard so you don't use an input for that.
Click to expand...

Where is it getting the fuel pressure reading from?
Holley told me i had to order a 0-100 pressure sensor. so i did

Also I remembered another input. I want to add another o2 sensor to the other bank
 
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ckruzer said:
Where is it getting the fuel pressure reading from?
Holley told me i had to order a 0-100 pressure sensor. so i did

Also I remembered another input. I want to add another o2 sensor to the other bank
Click to expand...
Dude, you need to read the manual.

Pin A31 on connector J1A is fuel pressure.
It's wired standard and doesn't use any of the programmable inputs.
Just like the IAT sensor is an input and doesn't use any of the programmable inputs.

In all cases you need a sensor that will output a voltage for the ECU to read, hence why you have a temperature sensor in the intake track for IATs and a 0-100 Holley pressure sensor for fuel pressure.


With a turbo you need the O2 sensor AFTER the turbo. Meaning AFTER the merge of both cylinder banks. Soooo both your O2 sensors will be reading the same value.
Also, 2 sensors is completely useless because the terminator X is unable to adjust fueling from bank to bank.
Just use one like everyone else, it's plenty fine if your tuner knows what he's doing. I've wired a 1000hp+ SBE LS on TermX and 2 O2 sensors were definitely not needed.



Edit: from reading the other topic, I would add a second fuel pressure sensor inside your surge tank in order to make sure that the lift pump isn't fucking up under load. I would also add an ethanol content sensor in order to make the tuning process easier and also enabling you to use pump 93 with reduced power in case you run out of fuel in the middle of nowhere and need to use what you can find at a "normal" gas pump.



I'm really not trying to dog you on this, but I do this shit for a living and before you start wiring stuff you need to really sit down and do your research or have a good conversation with whoever will tune your car, because turning cars around at the dyno due to poor wiring/lack of understanding of the electronics is something I see too often and it breaks people's egos and hearts when it happens. Nobody likes to hear "sorry I can't do what you're wanting because of (insert all the reasons you can think of)", but it happens ALLLLLLL THE TIME.
 
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Bebop said:
Dude, you need to read the manual.

Pin A31 on connector J1A is fuel pressure.
It's wired standard and doesn't use any of the programmable inputs.
Just like the IAT sensor is an input and doesn't use any of the programmable inputs.

In all cases you need a sensor that will output a voltage for the ECU to read, hence why you have a temperature sensor in the intake track for IATs and a 0-100 Holley pressure sensor for fuel pressure.


With a turbo you need the O2 sensor AFTER the turbo. Meaning AFTER the merge of both cylinder banks. Soooo both your O2 sensors will be reading the same value.
Also, 2 sensors is completely useless because the terminator X is unable to adjust fueling from bank to bank.
Just use one like everyone else, it's plenty fine if your tuner knows what he's doing. I've wired a 1000hp+ SBE LS on TermX and 2 O2 sensors were definitely not needed.
Click to expand...

I have read it. I do not recall seeing that. I’m doing my homework so I’m more prepared than unprepared for when I open the booklet and sit down to route the harness

Regarding the turbo. My banks will not be merging. I’ll be running side pipes. Even if i wasnt, on a c3 the first opportunity to merge banks is right after the rear end

It won’t hurt to have two sensors and read which is doing what availing me to opportunity to move the terminator X sensor to the bank of choice. Seeing how the ecu will let me trim fuel based singularly on left or right or average.

I don’t know if you’re intending to but you’re coming off arrogant and prickly because you’ve obviously done a few and this is my first Terminator X install

Thanks for the advice
 
ckruzer said:
It won’t hurt to have two sensors and read which is doing what availing me to opportunity to move the terminator X sensor to the bank of choice. Seeing how the ecu will let me trim fuel based singularly on left or right or average.
Click to expand...
It won't, that's a Dominator only feature in the Holley world.

ckruzer said:
I don’t know if you’re intending to but you’re coming off arrogant and prickly
Click to expand...
Not my intent. At least I'm helping and providing accurate data that is backed by experience.



Heard on the C3 exhaust setup. Forgot you were going TT. Makes more sense, but again you'll have to pick which bank you're adjusting the fueling with. Can't be both unfortunately.
 
Bebop said:
It won't, that's a Dominator only feature in the Holley world.


Not my intent. At least I'm helping and providing accurate data that is backed by experience.



Heard on the C3 exhaust setup. Forgot you were going TT. Makes more sense, but again you'll have to pick which bank you're adjusting the fueling with. Can't be both unfortunately.
Click to expand...

Noted
Thanks
 
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