Anyone here running one yet or will I be the first on a thirdgen?
Placing my order monday..

 

Not me, I've got an EBL.
But,
I'm excited for ya, which one?

 

HP

 

I see, just the ECM no intake.

They look pretty slick to me...lots of great controls.

I downloaded the software to look at.

 

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.

 

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

 

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.

 

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.

 

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?

 

I been ghosting the chevytalk forums , they have some smart fellows over there. One of the mods is a holley techie too.

 

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.

 

Any idea if this would plug directly into a stock GM TBI Harness:

http://www.holley.com/554-116.asp

 

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)

 

This plugs in to your harness...sooo easy to install & use.

http://www.dynamicefi.com/

 

what he said.
for a tbi guy looking for a tunable ecu, cant go wrong with that

 

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 good look forward to future updates!

 

Definitely signing up for this thread. Hope it goes as well as advertised.
J

 

So do you have any pic's of everything out of the box or you waiting for x-mas

 

the second pic was the ecu itself, otherwise its just an engine harness and a few sensors. what do you want to see?

 

Curious about the harness and sensors, I imagine it's all gm based?

 

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.

 

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.

 

Bump I want to know how you like it

 

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

 

Thanks! I have a car that needs a tune very badly and a plug and play hp efi is probably perfect for this car I have.

 

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

 

so would it replace the tpi mass air flow with a map sensor set-up then?

 

yes sir!

 

Nice video, seems to be running fine, hows the idle?

 

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.

 

what all distributors will work with this? and what map sensor did you go with?

 

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.

 

Trav, does it have a %o2c fuel correction like the EZ? and how fast does it make the corrections and put it into the programmed A/F?

sounds good BTW.

 

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.

 

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.

 

%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.

 

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!

 

thats what i wish the EZ system did. i had to trim down my MAP , IAT, and extend my batt wires and my o2 plug. cant see any of my cuts but being OCD to some point it would have made me a lil more warm and fuzzy inside.

 

which map sensor did you go with for boost?

 

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.

 

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.

 

What about the factory gauges in the dash? Do they all work?

I was thinking about the HP system for my solid roller cammed 406 miniram. I would hate to ahve to run a seperate speedometer and gas gauge.

Thanks!

 

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......

 

OK, cool. I wasn't sure if the signals went to the cluster, or to the factory ECM. I currently have an Accel DFI-6 and it is jumpered in line with the factory ECM.

That just made my decision a lot easier....

 

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

 

on my EZ system i didnt have to do anything and everything worked. im sure the Holley system is the same in this aspect.

 

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

 

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?

 

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.