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I shifted the two tables two columns to the left.

Wrote the tune and it is running much better now. Not as rough and also not "hunting" around as much to keep stable RPM. Also my eyes aren't...

Ok so as you are running 55 and default is 58 did you shift any tables to the right ? Or no tables shifted and only these two fields altered?

obthomas, thank you for your response.

Assuming my injectors are performing as designed and that I'm working within the confines of the table for the correct flow rate versus pressure, how...

Agreed. Which is why they use something like their FPCM. I however don't want to have to use that module.

I'm pretty sure I mustn't be the first person using an e38 to want to tell it that...

Hi blindsquirrel, thanks for the response and info.

I'll give the shifting of these two tables a try. I Wanted to try those fields mentioned in my original post first as I thought this may have...

Hi Alex14SS thanks for the response.

Yes you are probably right on the MAF calibration. I'll check that out.

On the O2 sensors, these could also be a culprit. They are just some cheap and...

I'm running a stock crate LS3, stock injectors etc, FPCM not installed/disabled. (601: FPCM Fitted: No).

Therefore I am assuming the E38 would otherwise be expecting a default 58 psi at the fuel...

I'm doing my first starts on my LS swap into Toyota 86 and having an issue with fuel control.

When looking at Fuel Pump Commanded DC in the scanner it sits at a constant 0.4%. I'm using an...

Just as an FYI, I ended up getting this done by a supplier called "Commodore Hackers" on the Gold Coast, Qld. They did whatever they needed to do to get the first write/setup of the brand new e38...

I am using an e38 in an LS3 engine swap, no GM FPCM is used. However I would still like to have PWM fuel pump control via the PWM which flows from X1 pin 50.

So far tests via HPTuners allow me to...

Well that was an interesting exercise.

I basically answered my own question. I downloaded 60 tunes from the repository for vehicles I thought would be somewhat similar to see what the tables...

P.s. If I go to the tune repository, can I download some tune files from various similar vehicles and check out what they have done without consuming a credit? Or does just opening a tune file...

Because this is my first adventure in this LS swap arena, this is why I was hoping to find perhaps a table for this fan speed VS pressure that had largely worked for someone else before. Perhaps I...

Does anyone have any advice on what range of values to use in the 18031 Fan desired % VS AC pressure table? I'm talking at what pressure should I enter the first/lowest speed (e.g. Perhaps it's 0%...

Great! Thank you for such a great reply!

Matt

Hi All,

How do I do the very first write to the ECU for a brand new, fresh out of the box E38, GM part no. 12633238 ?

I purchased it new thinking this is what I would need for my LS3 engine...