Toyota 18R-G (808, NVRAM, USB)

Converting To Delco ECU From Carby Or Other Injection Systems
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Re: Toyota 18R-G (808, NVRAM, USB) - died, help please

Postby vlad01 » Sat Apr 25, 2020 6:27 pm

My understanding is it is still tuned by the VE table except it uses default map parameters to assume the map value based on the TPS and RPM and those parameters.
I'm the director of VSH (Vlad's Spec Holden), because HSV were doing it ass about.

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Re: Toyota 18R-G (808, NVRAM, USB) - died, help please

Postby Steve M » Sat Apr 25, 2020 8:36 pm

That looks a lot better!

I finished rewiring the reluctor using shielded wire, shoeld grounded to the chassis. Ran a few test cranks with the plugs out, it didn't look too bad, only a could of spikes when the coil was connected. (I forgot to put the protective cover over the reluctor in the distributor).
Used toming light to check that I had the polarity correct.
Wiped the NVRAM and loaded a known good BIN onto it.
Brake cleaner and paper towel on the spark plugs.

Started first kick and then died.
Then it started just like it always had.

No RPM spikes noticed in a few minutes of running.

I did previously do a test start with a reprogrammed Memcal with the good cal on it, with no luck.

Corrupted NVRAM may have been the problem, so may the reluctor.
It did not behave as previous corrupted NVRAM jas in the past as it was gradual and the fan didn't turn on with ignition on.
Thanks for all of the assistance. That kind of support os why I chose the Delco system in the first place and stuck with the PCM hacking hardware.
Awesome support guys, I'm learning a lot!

Cheers.
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Re: Toyota 18R-G (808, NVRAM, USB) - died, help please

Postby antus » Sun Apr 26, 2020 11:43 am

Good to hear! That talk of the nvram gives me another thought - how old is the nvram? Could its battery be nearing end of life? I know you tested a memcal and still saw problems, but it might be a second factor.
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Re: Toyota 18R-G (808, NVRAM, USB) - died, help please

Postby delcowizzid » Sun Apr 26, 2020 12:44 pm

There was a couple of weird map sensor settings but I don't think it would stop it starting. But it only takes a missing decimal point in a setting for there to be issues. Good to hear its running again
If Its Got Gas Or Ass Count Me In.if it cant be fixed with a hammer you have an electrical problem

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Re: Toyota 18R-G (808, NVRAM, USB) - died, help please

Postby Steve M » Mon Apr 27, 2020 12:30 am

Thanks for looking into it.

What were the weird MAP settings?

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Re: Toyota 18R-G (808, NVRAM, USB) - died, help please

Postby delcowizzid » Mon Apr 27, 2020 8:34 pm

Think default map for engine not running was one of them would have to go back through it
If Its Got Gas Or Ass Count Me In.if it cant be fixed with a hammer you have an electrical problem

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Re: Toyota 18R-G (808, NVRAM, USB)

Postby Steve M » Thu Apr 30, 2020 12:39 pm

I'm trying to tune it in using BLMs but am having some issues.
1. The BLMs appear not to do anything above 3200RPM.
2. BLM seems happy to pull out fuel but not add it when required.

Is there something in my scalers or tables that would prevent this function from working correctly?
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29 Apr_4.BIN
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29 Apr_4.xdl
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30 Apr_1.BIN
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Re: Toyota 18R-G (808, NVRAM, USB)

Postby Charlescrown » Thu Apr 30, 2020 2:56 pm

I'm not the best when it comes to block learn but my method of tuning is to turn it off and adjust the VE to get the wideband data where I want it the the spark table of knock sensor (and common sense) data. I think if you are looking at block learn remember it's adapting to out of spec and if you disconnect the battery you'll have to start all over again. Just my thoughts.

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Re: Toyota 18R-G (808, NVRAM, USB)

Postby delcowizzid » Thu Apr 30, 2020 8:51 pm

Has your map sensor error problem been fixed yet cause with the code active it won't be using the map sensor
If Its Got Gas Or Ass Count Me In.if it cant be fixed with a hammer you have an electrical problem

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Re: Toyota 18R-G (808, NVRAM, USB)

Postby Steve M » Fri May 01, 2020 4:33 pm

How do I fix the map sensor error.
I am not sure what I should see when I look at the parameters.

On a different note. My WBO2 now has an error. It's registering 14.7 at all times. I'm guessing it's new sensor time. (Maybe 3000 k's old).

I have been able to get much better results tuning by narrowband O2volts than i ever got with the WB histogram spreadsheet. It drives quite nicely now.

I did notice that BLMs were trying to pull fuel out even when the O2 sensor was below 500mV.
I don't think that should happen.

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