Holley 12-1800 dominator fuel pump
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Anyone take this over 80psi?? I am out of injector and curious if anyone cranks up the base with any results?? My DCs are 125% with 80lb injectors on gas. I know I need larger injectors but wanted to squeeze a little more out of this. Not sure on power level but 19psi 8.8@152 58base
I'm not up & running yet, but I have your injectors:
https://ls1tech.com/forums/parts-cla...injectors.html
https://ls1tech.com/forums/parts-cla...injectors.html
Doug, you can always get a VersaFueler. I would go with a standalone at your point though.
For your question, I wouldn't take the pump up that high, it will reduce the life, and not be good for it in general.
For your question, I wouldn't take the pump up that high, it will reduce the life, and not be good for it in general.
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I was a little Leary of buying this pump when I saw the 80psi rating but figured it would be fine. Now regretting not going with the magnafuel. I'll grab a set of injectors and see how much that helps
Ya I have looked at those versafuelers I heard they suck to tune with but will look into it myself
I was a little Leary of buying this pump when I saw the 80psi rating but figured it would be fine. Now regretting not going with the magnafuel. I'll grab a set of injectors and see how much that helps
I was a little Leary of buying this pump when I saw the 80psi rating but figured it would be fine. Now regretting not going with the magnafuel. I'll grab a set of injectors and see how much that helps
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From: Granby, Mass
Wow that's crazy I heard good things about the magnafuel just wanted the Holley because ofthe street use . Ill step up on the injector and I'm sure that will take care of it. Time to shell out another 2k lol
Last edited by Camaro9969; Sep 1, 2014 at 03:48 PM.
You can get into a set of Holley 120's or 160's and driver box from AEM or Versafuel for half that price. These injectors have great manners and there is no down side (besides the wiring) to going that way.
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From: Granby, Mass
So the Holley can't handle about 80psi? I tried cranking the base and it seemed worse I couldn't tune around it like I could with my twin 255/340 in tank set up
that pump with holley 160s on E85 here I have been 155mph at 50-55% duty cycle 43 psi base, I did run it at 50 base when I had holley 120s but I dont think it will like a 80 base very much, your gonna need more injector
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Alright cool and you have the injector driver also???
If fuel pressure is rising and staying fairly stable, then you should see extra flow.
If fuel pressure is taking a dive under heavy load, then no point trying to run more.
If you want pumps that flow, are reliable and handle pressure...Bosch.
Or at a push, a boostapump firing more voltage into your current pumps should yield a decent gain.
but really you need to establish if it is larger injectors you need, more fuel flow via pumps, or maybe even both.
What is fuel pressure doing ?
If fuel pressure is rising and staying fairly stable, then you should see extra flow.
If fuel pressure is taking a dive under heavy load, then no point trying to run more.
If you want pumps that flow, are reliable and handle pressure...Bosch.
Or at a push, a boostapump firing more voltage into your current pumps should yield a decent gain.
but really you need to establish if it is larger injectors you need, more fuel flow via pumps, or maybe even both.
If fuel pressure is rising and staying fairly stable, then you should see extra flow.
If fuel pressure is taking a dive under heavy load, then no point trying to run more.
If you want pumps that flow, are reliable and handle pressure...Bosch.
Or at a push, a boostapump firing more voltage into your current pumps should yield a decent gain.
but really you need to establish if it is larger injectors you need, more fuel flow via pumps, or maybe even both.
Most pumps do suffer a greatly reduced lb/hr hit the higher you turn them up but this thing isn't even being pushed to 50% on 80 lbers.
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From: Granby, Mass
He knows that he is out of injector. He's trying to compensate for that by turning up the fuel pressure. This pump is nowhere near maxing out on his 80# injectors unless one of the pumps in the housing is failing or has failed.
Most pumps do suffer a greatly reduced lb/hr hit the higher you turn them up but this thing isn't even being pushed to 50% on 80 lbers.
Most pumps do suffer a greatly reduced lb/hr hit the higher you turn them up but this thing isn't even being pushed to 50% on 80 lbers.
Thread Starter
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From: Granby, Mass
What is fuel pressure doing ?
If fuel pressure is rising and staying fairly stable, then you should see extra flow.
If fuel pressure is taking a dive under heavy load, then no point trying to run more.
If you want pumps that flow, are reliable and handle pressure...Bosch.
Or at a push, a boostapump firing more voltage into your current pumps should yield a decent gain.
but really you need to establish if it is larger injectors you need, more fuel flow via pumps, or maybe even both.
If fuel pressure is rising and staying fairly stable, then you should see extra flow.
If fuel pressure is taking a dive under heavy load, then no point trying to run more.
If you want pumps that flow, are reliable and handle pressure...Bosch.
Or at a push, a boostapump firing more voltage into your current pumps should yield a decent gain.
but really you need to establish if it is larger injectors you need, more fuel flow via pumps, or maybe even both.

