Anyone have new opinions on brands for full ecu replacement?

[justinlyman]

This is a plug & play Haltech kit for a manual transmission. This has an H55 mated using an FJ Co bellhousing. The motor was an OEM style rebuild. Very smooth driver. No dyno results unfortunately

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This is a Sniper’d carb motor. It was built with high compression pistons (10:1 I think) and had timing control. That was a lot of fun to drive

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That 40's engine bay is super clean!

 

[dogfishlake]

So @FJ60Cam , have you seen ANY more of those bellhousings for the 1fz/h55? It would be so nice to keep them available. I reached out to FJCo about buying the mold even, but no dice

 

[dogfishlake]

Sorry about the hijack there

 

[FJ60Cam]

So @FJ60Cam , have you seen ANY more of those bellhousings for the 1fz/h55? It would be so nice to keep them available. I reached out to FJCo about buying the mold even, but no dice

No, this was one of the last ones. There are forces out there trying to bring them back to market!

 

[dogfishlake]

No, this was one of the last ones. There are forces out there trying to bring them back to market!

Good. They need to be a thing!

 

[BigJoeSea]

the OBD2 1995 factory computer is pretty good:
advantages:
cheap, proven reliable,
you shuold already have every wire where it needs to go, only need to make some harness repairs maybe,
there is no question what replacement sensor, coil, part you need
many of the connectors are still avalible.

cons
needs distriubtor, wires, if dizzy needs replace can be somewhat expensive,
uses old O2 sensor tech newer sensors more accurate
difficult to make more power with if your adding supercharger, turbo,
haltec/ other ECUs
advantage:
uses latest wide band 02 sensor tech
air flow meter optional, can just use a map sensor, clean up your intake.
can use almost any map, sensor, ignition coil, o2 sensor, injectors, temp sensors you want from most car brands and it will work if the programming is right.
more safely tune with your supercharger, turbo nitrous build,
control water meth injection on your turbo or supercharger build
you'll end up with a small wiring harness that only has what you need on it. The harness will be brand new with all new connectors.
run coil on plug without the distributor if you want to.
can eek out the most power/economy possible most likely.
can control all sorts of other things, electric fan etc,
quickly monitor all your engine data from a single gauge, aftermarket cluster, phone app, other.
cons:
expensive
need to make your own wiring harness
need to spend time setting it all up and turning or pay somebody to tune.
if the ECU gets damaged you can't just get a used one for cheap.

im pretty sure the altitude adjustment performance will be about the same with both systems but i could be wrong.

TBM,

With more background from the previous owner, I guess he had some issues with the factory harness, so I'm leaning toward a Fueltech 450, with Harness, and nano pro wide band o2 controller/display. The engine currently has 3 coils (no distributor), but I'm looking to upgrade to a 6 coil-on-plug setup.

 

[BigJoeSea]

@BigJoeSea
How are you going to connect an H55 to your 1FZ? Last I knew, The FJ Company was the only supplier of an adapter bellhousing for the two. If you have the last one, I would pay you to borrow it to have it duplicated to keep that idea alive, as they are done selling them as far as I know.
If you have crossed that hurdle, you will find the 1FZ really doesn't need help (from a turbo or supercharger) with motivating a short wheel base 70 with a manual transmission. The a343 auto eats close to 20% of the driveline power on its own without adding the transfer and awd system of an 80 series. It will be a rocket without boost.

Along with the engine came a bellhousing for the 1HD-H55. I may need to fab a narrow spacer to make up ~100mm, but I'm not to that point yet. There are a few of these same bellhousings available on ebay as well. The previous owner had this engine mated to an H15x trans.

Hopefully I don't have too many headaches

 

[BigJoeSea]

Full disclosure: We are a Haltech dealer, do have a little experience with them, and want to do more with them. They can be a high maintenance sale from our perspective or even cost us $$$ if we have to assist troubleshoot the final product. There is not a ton of margin for us to spend much time w/tech support, so we have not pushed this at all yet. That said, we'd love to find a way to add value and offer a few different solutions for the 1FZ, both manual & auto, NA and turbo or supercharged.

Just changing to the Haltech over stock ECU is a potential gain of 25-ish HP*, due to being able to better tune the timing. You do have to dyne tune it to realize the full potential.

The Haltech has unlimited power expansion potential if you buy the right model. Note that the 750 does NOT have the capability to control the factory idle air stepper motor. You will have to convert to an aftermarket IAC and potentially spend more in time & $$$ learning this the hard way instead of just going for the 2500 or the newer S3 (we had to learn the hard way). As a shop, time is very expensive and it is less expensive for us to go straight to the better model that just works.

You can do the plug & play if you have the factory harness. It is relatively plug & play tho requires a few bananas skill level to end up with a running truck. Especially in a swap. We can assist with piggybacking the OEM computer to keep the auto trans and all of the inside the cabin functions

We also the Sniper option for folks with carb'd motors/manifolds. We have done those with both the vac advance distributor and also converting to timing control.

The absolute best way to reach out for something like this is to text our shop number (901) 213-6373 or send us a work request from the work request tab on our website.




* There is a thread here somewhere that someone Haltech'd a stock, used, 1FZ (believe it was manual, outside of the US) and gained around 25 HP just from switching to the OEM computer to Haltech.

I do really like the Haltech as an option, but my help/friend here in Ecuador is more familiar with Fueltech, and has an 1FZ-FE in his 80 series. I'm not sure which trans he's running, I'll have to ask tonight.

 

[BigJoeSea]

This is a plug & play Haltech kit for a manual transmission. This has an H55 mated using an FJ Co bellhousing. The motor was an OEM style rebuild. Very smooth driver. No dyno results unfortunately

View attachment 3828851

This is a Sniper’d carb motor. It was built with high compression pistons (10:1 I think) and had timing control. That was a lot of fun to drive

View attachment 3828853

View attachment 3828854

These are both beautiful and clean installs! I especially like the 'stock' appearance, as I'll be importing this 70 to US when I move back in a couple years.

Which radiator are you running? I still have the factory radiator, and want to upgrade to an aluminum radiator with more volume.