Icem@n

iTrader: (1)

I live in the caribbean and would like help in tuning my Evo4. I have attached my current ROM, xml and some log files. I will greatly appreciate some help in tuning my Evo.

foxbat

This map is made with a larger turbo & higher loads in mind. What fuel are you using?
It could use some more timing advance, incrementally increase timing, starting 3500-7000rpm, 180-210 load. Keep an eye on those knock counts.
Decrease fuel a bit starting 4000 rpm all the way through (180-210load) reaching 11.5 gradually to 11.2-11.1 by read line.

Don't run more boost if you're still on the stock 4 engine internals.

Icem@n

iTrader: (1)

Yes the map was made for upgrades in mind in terms of bigger turbo and more boost but for now I am just running the stock turbo with stock internals. I am using 93 octane fuel which is the only available fuel on the island. I don't intend to run more boost on the current stock internals and turbo for now. Thanks for your input I will tweek the map abit as you suggested to add more timing and remove some fuel up top. When adding timing should I add 1-2 degree at a time?

foxbat

Yes 2 degrees at a time, when you encounter knock (2-3 counts or more) then decrease timing by 2 counts in knock areas.

Icem@n

iTrader: (1)

Thanks man i will do some changes and will post the logs either tonight or tomorrow after i add some timing and remove some fuel as suggested.

Icem@n

iTrader: (1)

Ok I have made a few changes to the map as suggested and wanted some opinions of if i am on the right track or not and would love some recommendations. I tried the new evoscan v2.9 to do these logs and realise that when I open graph and map tracer all 4 logs max out at 150 loads but when I look inside the .CSV file the loads go up to 224 loads max. Can someone try to open these logs in evoscan and let me know if you are getting the same issue in map tracer.

CDrinkH2O

iTrader: (7)

Yes, that is because you are logging ECULoad as well as Load1B. ECULoad pegs out at 159 due to the limitations of 1 byte data storage. EvoScan uses the first log item it finds with the word "load" in it as the load axis. This happens to be ECULoad and not Load1B, so that is why it seems to stop at 150.As a quick fix just delete the ECULoad column from your data using Excel.

Next time you log deselect the ECULoad option - it's worthless for what you are doing.

Icem@n

iTrader: (1)

Thanks much mate. It worked fine now.

foxbat

Not bad, you need to make the fuel table more smooth, as an example, why are the values richer in the 3750-4000/200-220 area? & it shows in the log.
I think you could afford to decrease fuel a bit more starting 4000rpm.
You seem to have consistent knock in the 5000-5500/210 area, decrease timing by 1-2 degrees.

Icem@n

iTrader: (1)

I made some changes to my tune today finally after having a very hectic week. Pulled 1* from around 5000-5500 rpm/210 load and also pull some fuel from 4000-redline rpm to try and keep it just above 11.1 AFR. What are your taughts on the logs, any suggestions will be gladly appreciated.

foxbat

Very good! One final minor adjustment, decrease fuel a bit in the area 4000-4750rpm 220-230load, so you'd have a better transition in the log.

For future purposes, I suggest that you swap your pistons with later evo or aftermarket pistons & you would be able to run more boost.