[TSloper]

Originally Posted by Speedy1975

Do you guys have to deal with COT protection at all?

COT can be disabled but it will also disable AFM if you have the A8. To get around that you can leave COT enabled but just change the enrichment boundaries to effectively null it out.

Tim

[Speedy1975]

Good to know.

[oldman]

Originally Posted by JANNETTYRACING

No disrespect here but your tuning backwards.

Set the PE at what you want to see on the wide band and tune the MAF to achieve 0 fuel trims and commanded PE.

Ted.

LOL completely admit I Newbee

[oldman]

Originally Posted by TSloper

I have my PE set to 1.150 (.870 lambda) at peak power.


Tim

thanks. So I set the PE back to 1.150, The maf table... stupid question, do I make the translation table numbers go up or down to lean the car out?? I know stupid question.

[oldman]

Originally Posted by TSloper

You should be setting your PE where you want it then adjusting your MAF. I can send you my spreadsheet I use if you want it. It will give you a properly fitted MAF curve based on the % error of commanded vs actual lambda.

Once you get the MAF dialed in you can feel confident future PE changes will be damn close to what you are asking for.

OK will that work with Mishmoto MAF?

[JANNETTYRACING]

Originally Posted by oldman

thanks. So I set the PE back to 1.150, The maf table... stupid question, do I make the translation table numbers go up or down to lean the car out?? I know stupid question.

Higher is richer lower is leaner.

Ted.

[TSloper]

Oldman,

You need to create a histogram in HPT than plots lambda error against MAF frequency. This will give you the amount you need to adjust the MAF transfer value for each Hz cell. To properly recalibrate for a cold air intake you will also need to make sure the ECM is in MAF only mode or you won't be able to get all areas dialed in correctly. This is the high level view. As with most things there are some subtle things to pay attention to as well such as filtering out data points that should not be included in the histogram.




Tim

[oldman]

I reprogrammed the Performance Enrichment table.
Why can't I go to the MAF frequency table and extend the range and lower the last 2/3 of the numbers one column to the right which is about 5% lean. The table above looks like a delta table based on lamda which I get, but for me I'm thinking a bellshapped curve around 12.35 air / fuel at WOT.

Or will messing with the MAF table hose part throttle a/f and I have to go to the above translation table.

Don't beat me up, just asking.

I've been on the HPTuner board and the reports back from some vendor tables modifications are very poor.