Holley HP EFI
#1
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Holley HP EFI
Anyone here running one yet or will I be the first on a thirdgen?
Placing my order monday..
Placing my order monday..
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Re: Holley HP EFI
I see, just the ECM no intake.
They look pretty slick to me...lots of great controls.
I downloaded the software to look at.
They look pretty slick to me...lots of great controls.
I downloaded the software to look at.
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Re: Holley HP EFI
I love the software, easy to navigate. I only needed the ecu/harness/sensor combo for $1400.
I dont need the intake or fuel system, already have that all covered.
I dont need the intake or fuel system, already have that all covered.
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Re: Holley HP EFI
Nice,
I had not seen your posts on the un-tunable, or is it self-tuning? system.
What is a FAST system without spark control anyway? lol
I had not seen your posts on the un-tunable, or is it self-tuning? system.
What is a FAST system without spark control anyway? lol
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Re: Holley HP EFI
Holley's fueling is self tuning just like EZ EFI, based on wideband input. it will also be very nice to run my procharger on it and have detailed control over timing!
Also leaves room for the meth injection I want to do in the near future to control boost detonation on this crappy 91 octane cali gas.
Also leaves room for the meth injection I want to do in the near future to control boost detonation on this crappy 91 octane cali gas.
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Re: Holley HP EFI
The most Holley EFI users you'll find is on their own forum, outside that the most I've seen are on Chevytalk in EFI section.
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Re: Holley HP EFI
I just checked out the software looks pretty easy to use, I liked that video you posted on the other thread I can see this as a good option for people that want a good alternative to GM stuff.
Where are you picking up the hardware seems like a good deal for $1400 if you get all that?
Where are you picking up the hardware seems like a good deal for $1400 if you get all that?
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Re: Holley HP EFI
I been ghosting the chevytalk forums , they have some smart fellows over there. One of the mods is a holley techie too.
Last edited by TraviZ; 11-22-2010 at 01:54 AM.
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Re: Holley HP EFI
Most places online sell it for $1449..
I bought part number 550-605 which has unterminated ends on it, so I can custom cut each pigtail to the length I want for each sensor.
I think 550-601 is the TPI equivelant ready to go
I got a little better deal through where I work.
I bought part number 550-605 which has unterminated ends on it, so I can custom cut each pigtail to the length I want for each sensor.
I think 550-601 is the TPI equivelant ready to go
I got a little better deal through where I work.
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Re: Holley HP EFI
It will not, all of holleys ecu's are a unique molex connector and is not going to be the same as a gm ecu. you would be better off getting a 2 or 4 barrel tbi kit with included harness's such as 550-200 (2bbl) or 550-400 (4bbl)
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Re: Holley HP EFI
Look what came in the mail for me today
Looks like I will be the first HP user on TGO
wait in the coming week for pics of install.
I plan to record on video my engines first time firing up on this unit to hopefully show how easy/hard it is for holley's new advanced hp efi to self learn my engine and get it up and running as quick as they claim
Looks like I will be the first HP user on TGO
wait in the coming week for pics of install.
I plan to record on video my engines first time firing up on this unit to hopefully show how easy/hard it is for holley's new advanced hp efi to self learn my engine and get it up and running as quick as they claim
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Re: Holley HP EFI
Definitely signing up for this thread. Hope it goes as well as advertised.
J
J
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Re: Holley HP EFI
So do you have any pic's of everything out of the box or you waiting for x-mas
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Re: Holley HP EFI
the second pic was the ecu itself, otherwise its just an engine harness and a few sensors. what do you want to see?
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Re: Holley HP EFI
yea it all looks like basic gm 1/2" npt sensors, basic looking map sensor, and a six wire o2 sensor.
all pigtails are gm standards, newer gm though, like ls1 style for the IAC and TPS at least.
all pigtails are gm standards, newer gm though, like ls1 style for the IAC and TPS at least.
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Re: Holley HP EFI
I finally got the installation done, it took a few days to do it right. I of coarse got the unterminated harness version, and cut to length the wires only as long as I needed them and soldering crimped all the wire pins for a secure connection into the connectors. In the end, its a very clean install and you can barely tell the wiring is even there. I ran into a few snags, mostly mine, was one holleys mistake.
First, after it was all wired, the first step is to set the tps calibration by pushing the pedal to the floor twice, slowly. Well, i kept failing, and come to find out my tps (came with my edelbrock throttle body back in march...) somehow died while sitting for 9 months. i could not get more then .4 volts at full throttle from it, and when I removed it, i heard the internal return spring let go lol. so replaced that and was good to go.
Now for holleys little mistake...
My pre wired relay plug for the fuel pump and fuel injectors was wired wrong so I had to remove and swap two of the pins. A inconvenience.
I have to work today, hopefully will be firing it up tomorrow with a nice video.
First, after it was all wired, the first step is to set the tps calibration by pushing the pedal to the floor twice, slowly. Well, i kept failing, and come to find out my tps (came with my edelbrock throttle body back in march...) somehow died while sitting for 9 months. i could not get more then .4 volts at full throttle from it, and when I removed it, i heard the internal return spring let go lol. so replaced that and was good to go.
Now for holleys little mistake...
My pre wired relay plug for the fuel pump and fuel injectors was wired wrong so I had to remove and swap two of the pins. A inconvenience.
I have to work today, hopefully will be firing it up tomorrow with a nice video.
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Re: Holley HP EFI
thanks for asking, I havnt recorded it, but I got it running, I let it warm up and auto tune enable.. I drove it to work once too, it feels good, runs strong, did a nasty burnout!
however, i need to purchase a mechanical modulator for my th400, i didnt know that not having a vacuum modulator hooked up effects the shifting.
I have not hooked up my blower yet, however Its just a matter now of putting on the two bar map sensor and transfering the fuel map.
To sum it up, after one day of taking it to work, it feels safe enough to even race in the current state!
I'll work on getting a video of the auto tune procedure asap
however, i need to purchase a mechanical modulator for my th400, i didnt know that not having a vacuum modulator hooked up effects the shifting.
I have not hooked up my blower yet, however Its just a matter now of putting on the two bar map sensor and transfering the fuel map.
To sum it up, after one day of taking it to work, it feels safe enough to even race in the current state!
I'll work on getting a video of the auto tune procedure asap
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Re: Holley HP EFI
finally got the car good enough to drive, alot of bad weather lately, but here is a run on nothing but the self tune holley has done for me.
http://www.youtube.com/watch?v=phvCayQqtWk
http://www.youtube.com/watch?v=phvCayQqtWk
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Re: Holley HP EFI
still tweaking. idle during hot is great, when its cold, not so great, its too low, im currently diagnosing what may be a bad IAC valve though.
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Re: Holley HP EFI
just about any distributor will work. small cap, big cap..
i dont know about aftermarkets that require ignition boxes, like msd's but im sure its ok.
and they provide a map sensor with the kit.
i dont know about aftermarkets that require ignition boxes, like msd's but im sure its ok.
and they provide a map sensor with the kit.
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Re: Holley HP EFI
can you enlighten me on what %o2c is? perhaps holley is using a different term i can relate too?
the corrections are instant and set for good on the fly.
the numbers adjust faster then i can watch, probably every tenth of a second its updating.
the corrections are instant and set for good on the fly.
the numbers adjust faster then i can watch, probably every tenth of a second its updating.
#36
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Re: Holley HP EFI
i talk to a holley tech the other day and he told me that i could use my vortec dizzy i got sitting around so i was happy then later i looked at the plug at the back of my tpi and vortec dizzy and there not even close to the samething so now im not sure.
#37
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Re: Holley HP EFI
%o2c is where the o2 makes corrections from where its at to bring it into the target AFR. on the EZ you have a meter that will show what % your at. lets say iv been driving around for the longest at regular cruzing intervals, my o2 correction should be no more than %5-7. if i suddely put my foot into it and bring it into an area that it hasnt mapped very well the % will go up lets say to 29% and if i stay there for a sec or 2 it will start making corrections and bringing that % down.
BTW how big is your ECM in your system? the EZ is LITTERLY the size of my wallet just thicker.
on the un finished ends in your harness, did they give you the terminals to finish the ends with? if so i like that alot!!! allows for a cleaner finished assy.
BTW how big is your ECM in your system? the EZ is LITTERLY the size of my wallet just thicker.
on the un finished ends in your harness, did they give you the terminals to finish the ends with? if so i like that alot!!! allows for a cleaner finished assy.
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Re: Holley HP EFI
%o2c is where the o2 makes corrections from where its at to bring it into the target AFR. on the EZ you have a meter that will show what % your at. lets say iv been driving around for the longest at regular cruzing intervals, my o2 correction should be no more than %5-7. if i suddely put my foot into it and bring it into an area that it hasnt mapped very well the % will go up lets say to 29% and if i stay there for a sec or 2 it will start making corrections and bringing that % down.
BTW how big is your ECM in your system? the EZ is LITTERLY the size of my wallet just thicker.
on the un finished ends in your harness, did they give you the terminals to finish the ends with? if so i like that alot!!! allows for a cleaner finished assy.
BTW how big is your ECM in your system? the EZ is LITTERLY the size of my wallet just thicker.
on the un finished ends in your harness, did they give you the terminals to finish the ends with? if so i like that alot!!! allows for a cleaner finished assy.
#39
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Re: Holley HP EFI
if you get an holley efi, it will come with the proper pigtails for your distributor.
yes it has the o2%c just as you desribe, the ecu is a bit bigger, i think 4"x6" at most. but its thin. the unfinished ends do come with all the pigtails you could ask for. i trimmed my wires to fit my engine perfect then i put the pigtails on!
yes it has the o2%c just as you desribe, the ecu is a bit bigger, i think 4"x6" at most. but its thin. the unfinished ends do come with all the pigtails you could ask for. i trimmed my wires to fit my engine perfect then i put the pigtails on!
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Re: Holley HP EFI
What kind of tranny are you running? I am asking because I am purchasing the HP and would kinda like some wiring pointers on the converter lockup.
#42
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Re: Holley HP EFI
2 bar from holley
th400 no lockup but with the extra wires that can be used for activating anything, using one to power or ground your lockup switch would be no big deal, in the software you just use drop down menus to set when to activate the wire for lockup under which circumstances and when to unlock, such as rpm, or tps % or whatever you desire.
th400 no lockup but with the extra wires that can be used for activating anything, using one to power or ground your lockup switch would be no big deal, in the software you just use drop down menus to set when to activate the wire for lockup under which circumstances and when to unlock, such as rpm, or tps % or whatever you desire.
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Re: Holley HP EFI
Really the only gauge that will be "driven" by most ECM's is the Tach really. The oil pressure, gas and temp gauges come from external sensors for the most part. If you use an oil pressure sender that will drive two outputs is the only real exception sorta. Fuel level goes directly to the cluster and water temp is a sensor in the head so......
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Re: Holley HP EFI
For the speedo you will have to change a little bit maybe? If you have a buffer box you will have to bypass directly to the dash, I think but I may be wrong
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Re: Holley HP EFI
Just wondering about the idle after you looked into the IAC. Also, someone had asked about distributers. Does the HP have spark tables? Or do you have the option to run it like Fast's EZ system that just does A/F?
Thanks,
Jon
Thanks,
Jon
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Re: Holley HP EFI
Bump this up for you Travis
Im comming down to the wire in ordering my system. Got a few on the board . This one is tops right now in terms of selection. Be ordering in the next 3-4 weeks. Hows the tune now?
Im comming down to the wire in ordering my system. Got a few on the board . This one is tops right now in terms of selection. Be ordering in the next 3-4 weeks. Hows the tune now?
Last edited by IROCZ1989; 10-10-2011 at 01:17 PM.
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Re: Holley HP EFI
Just thought I would share what I got in the mail today. It was this thread that made my mind, thanks TraviZ. To bad I cant use it till next year sometime. The only thing I didnt like was that You still have to buy a harness for the knock sensor. And it has the TPI style TPS and my throttle body uses a LT1 TPS, Ill have to do some splicing.