Check out one of the vendors other than Holley. Efi System Pro can recommend a system based on your car. I believe Fastmanefi can also remote tune the system for you.
I would also suggest getting on the Holley forum and getting some help. Lots of people there that are very knowledgeable about the Holley efi systems.

 

agree, ended up with a better WB (applicable to the Holley HP and Dominator only) different MAP sensor, and for the wiring harness, I would have been happier with the universal harness, but the TPI harness is easier. But several strategies work fine.

 

I ordered the HP back in May and it is still backordered until 10/20. Just thought I'd give that little update on this thread

 

I ordered a Terminator X Max for the engine swap in my Suburban in May. Took nearly 5 months to get it. So with any luck you should have yours soon.
I'm beyond tired of this "due to supply" BS. It's even worse for my job. Some of the manufacturers won't even take orders for certain parts any longer. Its no fun explaining to a customer that their elevator is going to be down for months because I'm waiting for the part...

 

Hopefully. I'd like to just have it already. I'll post an update if/when i receive it. I'm just glad that they didn't charge me for it yet as it's quite pricey

 

Hey thought I would post in this thread instead of making a brand new one...

Working on my 1985 Z51 manual trans car.

Want to keep digital dash function except don't mind losing fuel economy readings. Want to keep AC.

Build is a Miniram 383, NA all motor no boost.

I am looking for a complete ECU and wiring harness setup. I don't mind installing ECU in the cabin.

I prefer to keep GM HEI ESC electronic spark control with a small cap distributor as I already have a nice MSD 8366 Billet small cap ESC distributor, but I am open to changing...

I am considering Fitech and Holley.

Fitech is really inexpensive. $850-$950 for single or dual wideband setup, harness and ECU. My concerns with Fitech is that it is batch fire with no way to adjust fuel trims cylinder to cylinder, so it can't correct for Miniram/LT1 intake port to port air flow variances, and dyno tuners that are fluent in the Fitech software are more rare than Holley.

I don't know what the Holley offerings look like, but my concern is price. I would be interested in Holley if it allowed injector to injector fuel trim control, especially if it could do so while keeping the GM HEI ESC distributor setup, so still not true sequential injection. I would also be interested in true sequential injection control via Holley, if it wasn't too expensive.

I am also interested in a Holley system even if it doesn't allow individuals injector control, assuming it has a competitive price with the Fitech....

Anyway, I really am looking forward to being educated by you guys on this, thanks!

 

While I've never used it, I believe the Holley systems allow individual fuel trims. I would suggest contacting Fastman EFI and discussing your build parameters with them. It's even advised to purchase from them vs Summit or directly from Holley on the Holley forums. I believe that a Terminator X would be a good option as far as the Holley systems go. While I have the more expensive HP, I would have gone with a TermX had they been released when I did the 85. (I may be switching to one when I LS swap it because it does DBW which the HP does not.) I even had it controlling the overdrive on the 4+3 before I ZF swapped it.
An added bonus to the Holley: I did a Terminator X Max in my LS swapped 99 Suburban and had it remote tuned by Dr EFI since I know nothing about transmission tuning (4l80e.) He had it tuned up and running absolutely awesome in a couple of hours and I didn't have to go make an appointment with a (somewhat) local tuner. I think that cost me about $575 and I didn't have to leave my garage other than to test drive the truck.

 

There are two different aspects, individual fuel injector trims and sequential/timed fuel injection.

Holley can do both, but for sequential you need a cam position sensor input. Easiest way to do this is an MSD Dual Sync so probably rule that out if retaining the factory distributor. Ive run this DS setup with sequential injection and ignition.

Easy to trim injectors, and you can do it based on RPM and manifold pressure, per each injector.

For the cheapest Holley system it’s a terminator X bundled with the MPFI harness, single wide-band, etc. It doesn’t do the dual wideband controlled dual bank setup. Get the sensors from Lowdoller to save money. The Terminator X can be removed and sold at a later date if you want to upgrade to HP for much improved NTK wideband or Dominator for more inputs outputs (power adder).

I looked at the FiTech but chose the Holley HP for the tuning interface, resolution, NTK WB, flex fuel sensor setup. Its a $2000-3000 budget for starters with the Holley, of course you can take it much further beyond with the Dominator but that wasn’t the discussion here. Holley offers a nice three tiered EFI course in Bowling Green, wouldn’t hurt to take the course so that you have the fundamentals for installation, setup, tuning, and they give some good discounts if you buy the equipment in school.

 

Okay so I am seeing Holley Terminator X MPFI kits for $1300-$1400

Is that right? That will give a single wideband O2, individual injector fuel trim control, but not true sequential injection, will work with the GM HEI ESC distributor spark control, and I can wire things such that I still have digital dash function but no fuel economy display? I am ZF6 swapping at the same time as this motor build and install.

Is that right?

Is the $850-$950 to $1350-$1450 price difference worth it to get the Holley system vs the Fitech TPI?
The benefits of that extra $400-$500 spent being individual fuel injector trim control, and being able to be tuned by basically any tuner out there?

 

Close enough I think, budget for fuel pressure sensor, inlet air temp sensor, coolant temp sensor, tools if you want to shorten a harness or add knock sensor input and sump pressure input... you can get away with using the internal MAP sensor, or even a standard GM 1bar sensor. One important signal is oil sump pressure as detonation will show spikes and you can program it to retard, and it uses an generic input wire. Make sure you have the wiring to connect to the HEI and an injector harness, fuel pump relay, fan relay (may be included, I don't know). Follow the installation guide exactly, especially where the warnings are shown.