Ignition setting

[a4ager]

Hi! I have toyota w/vast ignition running on 2.687 firmware w/MSII 3.57 for 4 years.I decided to update to to 2.891 and now when acceleration enrichment kicks in my car feels it misfiring or running too lean. Do I need to change my Ignition settings or acceleration enrichment calculation is the same on both firmware? Sorry no datalog as of this time.

[Bernard Fife]

a4ager,

The was a correction to the TPSdot setting in the INI somewhere between those codes, around firmware 2.883b I believe. If you loaded a MSQ made with earlier code, the TPSdot threshold would be off by a factor of 10. You can adjust those to the values you saw in the old code (I can't recall if this is 'x10' or '/10' off the top of my head).

Lance.

[Bernard Fife]

Found it:

Note the some v2.8 (& 2.6) INIs prior to Dec. 2007 have an error is in the TPSdot threshold setting. The error manifests itself as displaying the values as 1/10th the actual setting (so for example, 12.3 %/sec in MT would actually be 123 %/sec in the MS-II controller). You can tell if you have this error by looking at the TPSdot threshold in the accel enrichment wizard. If you have a decimal value displayed, then you are actually setting the value to 10x the shown value. You can either live with that by taking it into account, or put the appropriate updated INI in your project /mtCfg/ folder, and remaining it to megasquirt-II.ini (i.e., remove the numbers and periods at the end)...

This is here: http://www.megamanual.com/mt28.htm#tl

So the old value is 1/10th the new value, so you have to multiply it by 10x when using a newer INI.

Lance.

[a4ager]

Thanks Lance,

That was it. I did take out the decimal on tps dot threshold but not on tps base ae table.