Nistune Forums

Have anyone a stock ROM for a euro CA18DE from the Nissan Sunny, Sentra, Pulsar?

Have a look on the software page for the Rompack.

all the supported roms are there, if not, it can be downloaded from the vehicle via consult and
merged in to an existing rom if using the correct address file corresponding to the ecu part number.

Hello

The Rom i need is not in the Rompack
And i have no Consult in my 1986 Sunny.

My problem:
I drive the Sunny (Sentra) B12 CA18DE with a 200SX (180SX) RS13 CA18DET ECU.
Then i change the injectors, fuel pump, fpr and maf to CA18DET.
I put in the fuel and timing maps from the N13 CA18DE from the Rompack.
Next i change the k-constant so i can drive on 13-14 AFR, under full load about 12 AFR.
It runs very good but not on full power.
On full throttle it always show 52-53% load?
Why? Because there is no turbo?

Its easier to take the CA18DE Rom and change k-constant and injector latency?

martinb12gti wrote:Hello

The Rom i need is not in the Rompack
And i have no Consult in my 1986 Sunny.

My problem:
I drive the Sunny (Sentra) B12 CA18DE with a 200SX (180SX) RS13 CA18DET ECU.
Then i change the injectors, fuel pump, fpr and maf to CA18DET.
I put in the fuel and timing maps from the N13 CA18DE from the Rompack.
Next i change the k-constant so i can drive on 13-14 AFR, under full load about 12 AFR.
It runs very good but not on full power.
On full throttle it always show 52-53% load?
Why? Because there is no turbo?

Its easier to take the CA18DE Rom and change k-constant and injector latency?

I think you need to re-scale the TP

How can i rescale the TP?

On idle the TPS shows 0.45V and on full throttle more than 4.0V

[quote="martinb12gti"]Hello

The Rom i need is not in the Rompack
And i have no Consult in my 1986 Sunny.

My problem:
I drive the Sunny (Sentra) B12 CA18DE with a 200SX (180SX) RS13 CA18DET ECU.
Then i change the injectors, fuel pump, fpr and maf to CA18DET.
I put in the fuel and timing maps from the N13 CA18DE from the Rompack.
Next i change the k-constant so i can drive on 13-14 AFR, under full load about 12 AFR.
It runs very good but not on full power.
On full throttle it always show 52-53% load?
Why? Because there is no turbo?

Its easier to take the CA18DE Rom and change k-constant and injector latency?[/quote

installing a turbo will increase breathing capacity and therefore increase load readings.
Is there a plan to install some form of supercharging in the future?

Yes i have a Toyota SC12 supercharger, but this is my project for winter
Now i would drive NA.

I have found the thread to rescale the TP load

Still searching for a Stock CA18DE Rom, the ca18de maps in the rom package make no sense to me.

Regards Martin

is the car still NA with no turbo.
are you having any issues with driveability?

Adjusting KConst will have an effect on the MAX TP readings as its directly related. you can scale down you scalers to set a max of say 60 and it will give you more resolution in your fuel and timing maps.

We just don't have that ROM chip, because it is not a common model, and no one has ever read out the ROM file and saved it to BIN

@bsdkllr

The car runs very good with my maps since 2013, but in the next weeks i take the engine out and put a standard CA18DE in, so i will start with the standard CA18DE maps.

@Matt

If i send you a original CA18DE ECU, can you read the ROM file?

Regards and many thanks
Martin

I can but it might take a while to get here. Its taking over a month to get items with the COVID-19 stopping many flights to/from Australia

It might be cheaper/easier to get a programmer like this one and read it yourself:
https://www.mcumall.com/store/GQ-4x-uni ... programmer

The chips are normally 27C128 or 27C256 which you can read them out as once desoldered

Is this in the link all i need?

Regards

Yeah that will read the chip, if you are all good removing it from the ECU

Hello Matt,

What chip is the right one i should desolder from the CA16DE and the CA18DE ECU?

Thank you