decitions on Holley/ECU/Pro/???
12-04-2013, 12:16 PM
#1
decitions on Holley/ECU/Pro/??? 370ci
t56
electric fans
DBC
twin t61's
ev6 injectors
currently running a truck PCM and and LS1 engine/injector harness. I was considering moving to the Holley HP system vs. Dominator as I am running a T56/DBC etc. I don't really need a lot of input/outputs. The only reason I was considering the Dominator was because I need two wideband sensors being a twin turbo setup.
At the end of the day I don't see it making sense spending an additional $1200 (after everything is said and done) on the dominator when in reality all I need is an additional wideband sensor.
Anybody have any suggestions or recommendations?
I hate the stock harness in my swapped car. It is messy, ugly and unnecessary for my non a/c non powersteering bare bones street car. Im very interested in the self learning aspect of it as I am new "tuning"
t56
electric fans
DBC
twin t61's
ev6 injectors
currently running a truck PCM and and LS1 engine/injector harness. I was considering moving to the Holley HP system vs. Dominator as I am running a T56/DBC etc. I don't really need a lot of input/outputs. The only reason I was considering the Dominator was because I need two wideband sensors being a twin turbo setup.
At the end of the day I don't see it making sense spending an additional $1200 (after everything is said and done) on the dominator when in reality all I need is an additional wideband sensor.
Anybody have any suggestions or recommendations?
I hate the stock harness in my swapped car. It is messy, ugly and unnecessary for my non a/c non powersteering bare bones street car. Im very interested in the self learning aspect of it as I am new "tuning"
12-04-2013, 08:05 PM
#3
Waiting to hear myself as i'm in the same situation. Was originally gonna use hptuners, but with the steep learning curve plus you still need a boost controller, i'm leaning towards the holley.
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12-05-2013, 08:05 PM
#9
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You will use the inputs/outputs faster than you realize.
My car is pretty simple as well and this is how many I have used on my setup so far.
Outputs:
2x (+12v) Radiator fans
2x (PWM-) Boost solenoids
2x (+12v) I have the holley trigger my relays for the boost solenoids power
1x Ground for my dome pressure sensor
And I still need to wire up a speed sensor for boost vs speed.
Inputs:
1x 5v Dome pressure
1x T-brake/launch ( Could setup a switch under your clutch pedal that triggers this and allows you to launch at a certain psi.)
1x Ecu log Trig
And still need to wire the input for the speed sensor
So 8 outputs and 4 inputs and I still have a few more things to take care of.
I know the dominator isnt cheap but I have seen quite a few people purchase the HP just cause of the price then end up having to sale it and upgrade to the dominator.
My car is pretty simple as well and this is how many I have used on my setup so far.
Outputs:
2x (+12v) Radiator fans
2x (PWM-) Boost solenoids
2x (+12v) I have the holley trigger my relays for the boost solenoids power
1x Ground for my dome pressure sensor
And I still need to wire up a speed sensor for boost vs speed.
Inputs:
1x 5v Dome pressure
1x T-brake/launch ( Could setup a switch under your clutch pedal that triggers this and allows you to launch at a certain psi.)
1x Ecu log Trig
And still need to wire the input for the speed sensor
So 8 outputs and 4 inputs and I still have a few more things to take care of.
I know the dominator isnt cheap but I have seen quite a few people purchase the HP just cause of the price then end up having to sale it and upgrade to the dominator.
12-05-2013, 11:39 PM
#10
the reason that the 2nd wideband is not in the HP is because of a physical limitation of how many pins they are using...
the ecu uses almost all of the pins just in normal things to run the engine
the wideband takes up 8 pins.....
the 2nd wideband got added in the J2a connector on the dominator
the holley HP only has the J1a and a J1b connector
the connectors are laid out in inputs and outputs...
J1a - inputs
J1b outputs
J2a inputs
J2b outputs
J3 and J4 (on the dominator) were designed for specialty things...
J3 was designed of Drive by wire...with a few pins left over
J4 being the transmission controls with a few pins left over to use of other stuff
so as you see...J2 is what was designed for random ins and outs.....
there had to be a cutoff for both size and function to keep the HP price where it is at..
the extra controller(on the circuit board) for the extra ins and outs is where the extra cost is when you switch to a dominator.
there are 4 pins left on both the J1a and J1b connectors for the Holley HP... which are made to be your 4 extra ins and outs
not enough to add a 2nd wideband and still have outputs for fans/fuel pump basic things you need for the car to run
4 ins and out runs out quick when you have anything more than a basic naturally aspirated engine
I'm at 22 inputs and 17 outputs....and I'm planning on adding 8 egt sensors into the mix in the future as well
the ecu uses almost all of the pins just in normal things to run the engine
the wideband takes up 8 pins.....
the 2nd wideband got added in the J2a connector on the dominator
the holley HP only has the J1a and a J1b connector
the connectors are laid out in inputs and outputs...
J1a - inputs
J1b outputs
J2a inputs
J2b outputs
J3 and J4 (on the dominator) were designed for specialty things...
J3 was designed of Drive by wire...with a few pins left over
J4 being the transmission controls with a few pins left over to use of other stuff
so as you see...J2 is what was designed for random ins and outs.....
there had to be a cutoff for both size and function to keep the HP price where it is at..
the extra controller(on the circuit board) for the extra ins and outs is where the extra cost is when you switch to a dominator.
there are 4 pins left on both the J1a and J1b connectors for the Holley HP... which are made to be your 4 extra ins and outs
not enough to add a 2nd wideband and still have outputs for fans/fuel pump basic things you need for the car to run
4 ins and out runs out quick when you have anything more than a basic naturally aspirated engine
I'm at 22 inputs and 17 outputs....and I'm planning on adding 8 egt sensors into the mix in the future as well
12-05-2013, 11:55 PM
#11
It would make no sense to have an application at $2000 because for another $500 you could have all the bells and whistles. ****, it costs me $500 everytime I go out in the garage and look at my stuff. lol
You obviously don't understand.
12-06-2013, 06:46 AM
#12
You can be in a dominator set up for $2500. So for only an extra grand you can do whatever you want. $1000 at this level (the level needing aftermarket efi) is pocket change.
It would make no sense to have an application at $2000 because for another $500 you could have all the bells and whistles. ****, it costs me $500 everytime I go out in the garage and look at my stuff. lol
You obviously don't understand.
It would make no sense to have an application at $2000 because for another $500 you could have all the bells and whistles. ****, it costs me $500 everytime I go out in the garage and look at my stuff. lol
You obviously don't understand.
Thanks for explaining it to me since "I don't understand"
Last edited by oscs; 12-06-2013 at 11:37 AM.
12-06-2013, 07:08 AM
#13
the reason that the 2nd wideband is not in the HP is because of a physical limitation of how many pins they are using...
the ecu uses almost all of the pins just in normal things to run the engine
the wideband takes up 8 pins.....
the 2nd wideband got added in the J2a connector on the dominator
the holley HP only has the J1a and a J1b connector
the connectors are laid out in inputs and outputs...
J1a - inputs
J1b outputs
J2a inputs
J2b outputs
J3 and J4 (on the dominator) were designed for specialty things...
J3 was designed of Drive by wire...with a few pins left over
J4 being the transmission controls with a few pins left over to use of other stuff
so as you see...J2 is what was designed for random ins and outs.....
there had to be a cutoff for both size and function to keep the HP price where it is at..
the extra controller(on the circuit board) for the extra ins and outs is where the extra cost is when you switch to a dominator.
there are 4 pins left on both the J1a and J1b connectors for the Holley HP... which are made to be your 4 extra ins and outs
not enough to add a 2nd wideband and still have outputs for fans/fuel pump basic things you need for the car to run
4 ins and out runs out quick when you have anything more than a basic naturally aspirated engine
I'm at 22 inputs and 17 outputs....and I'm planning on adding 8 egt sensors into the mix in the future as well
the ecu uses almost all of the pins just in normal things to run the engine
the wideband takes up 8 pins.....
the 2nd wideband got added in the J2a connector on the dominator
the holley HP only has the J1a and a J1b connector
the connectors are laid out in inputs and outputs...
J1a - inputs
J1b outputs
J2a inputs
J2b outputs
J3 and J4 (on the dominator) were designed for specialty things...
J3 was designed of Drive by wire...with a few pins left over
J4 being the transmission controls with a few pins left over to use of other stuff
so as you see...J2 is what was designed for random ins and outs.....
there had to be a cutoff for both size and function to keep the HP price where it is at..
the extra controller(on the circuit board) for the extra ins and outs is where the extra cost is when you switch to a dominator.
there are 4 pins left on both the J1a and J1b connectors for the Holley HP... which are made to be your 4 extra ins and outs
not enough to add a 2nd wideband and still have outputs for fans/fuel pump basic things you need for the car to run
4 ins and out runs out quick when you have anything more than a basic naturally aspirated engine
I'm at 22 inputs and 17 outputs....and I'm planning on adding 8 egt sensors into the mix in the future as well
Thank you for your informed post you seem like you actually own and operate a holley EFI system unlike other members. I was able to source what I needed concerning the dominator system for around $2200 so I think that will be the route I go. I've read many of your posts concerning these units and I appreciate the help you have distributed.
12-07-2013, 12:40 AM
#14
Thank you for your informed post you seem like you actually own and operate a holley EFI system unlike other members. I was able to source what I needed concerning the dominator system for around $2200 so I think that will be the route I go. I've read many of your posts concerning these units and I appreciate the help you have distributed.
No worries 
