pcmhacking.net

These are not instructions, these are things I've found researching for hours online.

• Setting desired idle speed to a constant RPM across temp range will make it easier to find spark table cells.
• Run a log and find what spark cells you are sitting in.
• Retard the cells your idling in or add fuel to those cells. (Caution I added fuel and removed lots of fuel and the car started blowing lots of smoke)
• Find a solution to stay in open loop idle otherwise the car is just going to read sensors and not the table.

People are working on improving this so hopefully they will share.
Attached is a pop tune.

Update on my adventures

-low fan speed lowered to just above thermostat
-high fan set to old low fan settings
-Set idle to 700rpm and changed 600rpm lean and 800rpm rich hoping it would oscillate between the two but it does not.

I've had a US bloke explains his lump tune, I haven't been learning much about spark advance and hoping someone could look over the image for me?

"You need to change the idle target around the operating temp. Easier to do with a 180 thermostat like I have because that falls between targets. So you set them 75rpms apart. Idk how well it will work if you don’t have a 180. Then you have to log your idle and find the cylinder mass it’s sitting in. Then adjust the spark tables to jump between 10 degrees. I took 5 out on one load section and added 5 on the one next to it. Also you will need to 0 out the knock retard which is why I actually didn’t keep this tune. The KR readjusts the idle spark to keep it normal when jumping between cylinder mass. It’s great for show, but I wouldn’t run with it."

Whilst I have never had the need to do this, I do believe that it is done via ignition timing error, you look to be on the right track

I know this isn't an ecotec, but..

[youtube]https://www.youtube.com/watch?v=m8H9PpDEMEk[/youtube]

Thanks mate, I did watch that but wrote it off as I didn't have an overspeed/underspeed tables.

A lot of them also take about using VVT sadly.

I've worked out exhaust crackle, that was easy enough.

Lumping idle not wanting to play for me, what ever I did today makes it feel like its going to stall when it first enters idle.

I miss my toy prier to my son being born, now the only toy I can play with is the burnout car.
I know I'm not going to get the sound but rocking at idle would put a smile on my face again haha.

[youtube]https://www.youtube.com/watch?v=z2UYrB8Z3ng[/youtube]
[youtube]https://www.youtube.com/watch?v=nS-xrfMpqx8[/youtube]

That was one sweet ride.
Never going to beat that V8 rumble

Removed in respect of the creator

Removed in respect of tune owner