Haltech Elite 2000 ECU install on a FZJ 80 SC (1 Viewer)

[Arabian Cruiser]

Hi just installed the Haltech Elite 2000 on my 1996 fzj 80 Magnuson supercharged cruiser.

So during the tune on the Dyno today was told the wasn’t enough fuel reaching. He showed me on the graph saying it could be one of two things. Either the fuel pump or regulator need replacing or the injectors need upgrading.

So I ordered new factory fuel pump and regulator and filter with the thinking that these are probably as old as the truck and maybe time for a new set. Hopefully that gets installed on Saturday and back to the tuner on Sunday to carry on with the tune to finish the job.

I have read on here that there is no need for a bigger fuel pump and so have opted to go with the factory pump. Let’s see.

Another thing I found out that now the second fuel tank switch light is always on and that is driving me mad. Has anyone faced the same thing and how did you fix it.

And one last thing about today’s episode is we managed to get 195 go on the wheel which are 35s.

Any help would be appreciated.

 

[scottryana]

If you have the same injectors that we have here in the US you are maxing out your stock injectors. The stock injectors are 315cc's and if you are seeing 195awhp you are around 305hp at the crank. Once you factor in needing to run a little rich and you are maxing out the 315cc's injectors. Once you go to bigger injectors you will need a bigger pump. I would look at 440-450cc injectors and depending on your pump preferences Walbro, Aeromotive and Denso all make pumps that will fit the stock basket.

 

[Arabian Cruiser]

If you have the same injectors that we have here in the US you are maxing out your stock injectors. The stock injectors are 315cc's and if you are seeing 195awhp you are around 305hp at the crank. Once you factor in needing to run a little rich and you are maxing out the 315cc's injectors. Once you go to bigger injectors you will need a bigger pump. I would look at 440-450cc injectors and depending on your pump preferences Walbro, Aeromotive and Denso all make pumps that will fit the stock basket.

Thanks scottryana. I have no idea what cc. Was told today that they could be 280cc and if I needed to change them I should look for 400cc. So I will look into that. Thanks again for your help.

 

[dogfishlake]

I did the Supra pump in mine. That is probably the Denso that @scottryana is talking about (?). Easy to do.

Please keep up the information on how it all goes, and good luck!

 

[rc51kid]

If you have the same injectors that we have here in the US you are maxing out your stock injectors. The stock injectors are 315cc's and if you are seeing 195awhp you are around 305hp at the crank. Once you factor in needing to run a little rich and you are maxing out the 315cc's injectors. Once you go to bigger injectors you will need a bigger pump. I would look at 440-450cc injectors and depending on your pump preferences Walbro, Aeromotive and Denso all make pumps that will fit the stock basket.

Wow first reply to such a technical question is so spot on. Nice community.

 

[Arabian Cruiser]

found this page when doing a search. could be helpful for those that know more about this than i. Could help in identifying which Denso injectors would work as a direct fit.

Denso fuel injector specifications

also, one point I failed to mention in my original post. Was told my supercharger is giving 4 psi boost.

When I was driving today to go look for pumps, injectors, and regulator I felt the truck skip a beat every so often at highway speeds, like a mini judder and I heard a sound down by my left foot that click sounded like a switch or relay tripping. is that something I have to look at replacing or upgrading while I am at it? what is that and what is the part number? I read somewhere on here yesterday about someone having the same issue after a very very long drive and that relay stopped working that i think was related toa fuel pump.

I have located some parts and will be going to one more shop tomorrow to complete the parts and then I will reveal what I got.

Thanks

Mo

 

[ThomasMore66]

How hard is it to wire in the Haltech?

 

[aviator31]

If you're running lower boost, curious as to the reason you installed the Haltech? My understanding is that under 10 lbs boost the factory ECU is fine. For reference I am running the larger injectors with a Supra pump, but no more than about 8lbs boost and the factory ECU. My problem is when I go WOT and let off the gas abruptly, the engine wants to stall. Turbo setup, not supercharger for reference sake.

 

[scottryana]

You have to look at the OP's location. All of these ECU's respond to boost differently. Like Australia doesn't have OBDII, this gentleman might have the same issues the early USD 1FZ's have running lean. I do think it is possible he has 280cc injectors compared to our 315cc injectors which would make the situation even worse.

I would bet your stumble situation is due to your blow off location. When you are under boost you have metered a certain amount of fuel for the air in the intake tract and then when the blow off valve opens that air vents and the ECU still delivers the fuel causing a very rich situation causing the stumble. You can do a couple things to help solve it. Route the bov back into the intake tract, or remove the bov.

If you're running lower boost, curious as to the reason you installed the Haltech? My understanding is that under 10 lbs boost the factory ECU is fine. For reference I am running the larger injectors with a Supra pump, but no more than about 8lbs boost and the factory ECU. My problem is when I go WOT and let off the gas abruptly, the engine wants to stall. Turbo setup, not supercharger for reference sake.

 

[aviator31]

You have to look at the OP's location. All of these ECU's respond to boost differently. Like Australia doesn't have OBDII, this gentleman might have the same issues the early USD 1FZ's have running lean. I do think it is possible he has 280cc injectors compared to our 315cc injectors which would make the situation even worse.

I would bet your stumble situation is due to your blow off location. When you are under boost you have metered a certain amount of fuel for the air in the intake tract and then when the blow off valve opens that air vents and the ECU still delivers the fuel causing a very rich situation causing the stumble. You can do a couple things to help solve it. Route the bov back into the intake tract, or remove the bov.

Oh my bad, I see now that he's in Jeddah, long way from AR lol. That makes a lot more sense, thanks for your insight as always and I will give that a try...

 

[Arabian Cruiser]

How hard is it to wire in the Haltech?

Not hard at all. They have a harness. Plug and play

 

[scottryana]

Hmmm would you mind a few more details on your truck?

Is it an A442 auto?
Part time or fulltime 4wd?
Do you know how your O2 sensors are positioned? 1 for (1,2,3 cylinders) 1 for (4,5,6 cylinders) or 1 pre catalytic converter 1 post catalytic converter? Or do you even have a catalytic converter?
When you turn your key to the on position do you hear your fuel pump kick on?

And finally does the Haltech replace your stock computer or plug in with your stock computer?

Not hard at all. They have a harness. Plug and play

 

[Arabian Cruiser]

Hmmm would you mind a few more details on your truck?

Is it an A442 auto?
Part time or fulltime 4wd?
Do you know how your O2 sensors are positioned? 1 for (1,2,3 cylinders) 1 for (4,5,6 cylinders) or 1 pre catalytic converter 1 post catalytic converter? Or do you even have a catalytic converter?
When you turn your key to the on position do you hear your fuel pump kick on?

And finally does the Haltech replace your stock computer or plug in with your stock computer?

Gladly answer what I know.

It’s a Saudi Spec Fzj80 1996 but I believe it was made in 95.

It has two fuel tanks. It is a manual transmission, part time 4 wheel drive with the selector on the floor and a rear AC. No difflocks or cruise control or sun roof (moon roof). Didn’t have a factory winch.

No idea about the 02 sensors that above my pay grade at the moment. I will find out and report back on that.

No I don’t hear the pump come on when I turn the key.

The haltech is a stand-alone replacement. The factory ECU have been retired and is enjoying life in the boot of the car.

Also added factory front Winch and a warn rear Winch , king shocks, OME heavy duty springs. Fully loaded Front Runner roof rack, tent, awning , water tanks and boot sliding rack and compartments full of junk. So it became very heavy car and that’s why I wanted the supercharger.

 

[scottryana]

Yeah that makes more sense. We couldn't do a plug and play like that here. We never had and manual trans and part time 4 wheel drive 80 here. Very very different trucks as far as the electronics go.

Thanks you don't need to answer the rest!

Gladly answer what I know.

It’s a Saudi Spec Fzj80 1996 but I believe it was made in 95.

It has two fuel tanks. It is a manual transmission, part time 4 wheel drive with the selector on the floor and a rear AC. No difflocks or cruise control or sun roof (moon roof). Didn’t have a factory winch.

No idea about the 02 sensors that above my pay grade at the moment. I will find out and report back on that.

No I don’t hear the pump come on when I turn the key.

The haltech is a stand-alone replacement. The factory ECU have been retired and is enjoying life in the boot of the car.

Also added factory front Winch and a warn rear Winch , king shocks, OME heavy duty springs. Fully loaded Front Runner roof rack, tent, awning , water tanks and boot sliding rack and compartments full of junk. So it became very heavy car and that’s why I wanted the supercharger.

 

[ThomasMore66]

OK. That sounded too awesome to believe.

 

[Arabian Cruiser]

Ok, So these are the parts going into the truck.

AEM Fuel Pump P/N 50-1000
AEM Fuel Regulator P/N 25-302BK
Factory Fuel Filter
Denso Injectors P/N 23250-YWG01 450cc ( they are used and reconditioned so as good as new, it turns out they came from a TRD Supercharged FJ Cruiser according to the PO they will need a spacer)


The AEM pump is exactly the same size and configuration as the factory pump

 

[scottryana]

Looks good you will have plenty of fuel pump and injectors there to far exceed the TRD SC setup!

 

[Arabian Cruiser]

A couple of pictures of the truck on the dyno a few days ago.

 

[ThomasMore66]

Looks good. What lights are in the bumper?

I think it’s interesting that on this site we can look beyond geopolitics, religion, etc. and focus on our universal love of these vehicles. If only our leaders could grasp that concept.

 

[shocktower]

What kind of torque do you get out of that set up

Not hard at all. They have a harness. Plug and play

Some of us are punished, with a ECU that you really need to know how to rewire it, to run a stand alone I did a diesel swap and I run a stand alone just for my transmission, and TPS Tach cruise. Your cruiser is pretty cool