HELP!!! Holley EFI wiring solution.
Thread Starter
Staging Lane
Joined: Apr 2015
Posts: 79
Likes: 0
From: New Orleans
HELP!!! Holley EFI wiring solution. I have a 2013 Camaro 1SS and the dominator system from Holley EFI. My main dilemma is in retaining stock gauges. I do not have the gauge cluster located in the center console area under the radio so that is not a concern. I mostly just need the stock ECU for AC, the dash gauges, and maybe radiator fan control (although I believe the dominator can handle this).
Does anyone have a wiring solution or advice on the matter? I already know that the dominator will have to share the signal wire from the crank sensor with the stock ECU for the tachometer to work.
Does anyone have a wiring solution or advice on the matter? I already know that the dominator will have to share the signal wire from the crank sensor with the stock ECU for the tachometer to work.
That's the biggest problem with aftermarket engine ECU's they don't usually play nice with the stock ECU. I run the Holley system in a couple vehicles and it's just not worth the trouble to try to keep the stock gauges. There are a few threads where people have tried but with limited success. The Dominator will control the fans and the A/C by itself with no problem.
Anyone-successfully-tie-into-a-stock-cluster
You might have to choose between going back to the stock ECU or losing some dash function with the Dominator. Myself I use the 7" Holley dash for everything display wise.
Anyone-successfully-tie-into-a-stock-cluster
You might have to choose between going back to the stock ECU or losing some dash function with the Dominator. Myself I use the 7" Holley dash for everything display wise.
We molded the 7" touch screen in place of the stock gauges. The dash still looks stock except instead of factory gauges there is a touch screen. Just another option to think about.
Thread Starter
Staging Lane
Joined: Apr 2015
Posts: 79
Likes: 0
From: New Orleans
I know there is a way to do it. It's just that everyone who knows how keeps the secret to themselves. Just business I guess. I know race proven motorsports knows how but again, I am nowhere close to them. New Orleans, LA.
– and thanks LL, the guy the 2nd post looks like he has done it so again I know it's possible.
– and thanks LL, the guy the 2nd post looks like he has done it so again I know it's possible.
It can be done, theres no question about that. You will need to run the factory ecm just for the gauges to work. Thats a lot of work for stock gauges IMO. We have not personally done the whole holley conversion and left factory gauges (we always use the touch screen) but have tuned on a couple cars that other shops had done and left the stock gauges. Not all sensors/signals can be split easily you may end up with two sensors for some items, one for holley and one for your factory ecm.
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I dont know who did them, none of the cars were owned by the person who had the conversion done. The wiring looked pretty bad so we didnt look them over that well. We are going to do a Z06 in the near future, we know what needs to be done just havent done it from start to finish in the same car.
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