MembersPage/MattiasSandgren/BadUpgrade (2011-05-23 08:04:22)

Why too rich?

The secret is probably found if I look into the calc model

The problem is the Anytrim enabled. Disable in Motorsports menu/Anytrim control dialog.


My stock BMW

I upgraded my summer daily driver from 1.1.70 to 1.1.91 the other day, now that 1.1.91 had been released for a week. I began by first warming up the car and seeing if it ran as it should after winter storage and it showed no sign of problems.

I upgraded to 1.1.91 and started the engine, it ran rough and I immediately adjusted req fuel as I suspected it ran rich by the sound of it. To my surprise I had to lower it to 8-9 ms down from the previous 16.3 that was used with 1.1.70.

Looking for my mistake I warmed up the engine properly after that and downgraded to 1.1.70 and restored the old configuration file, sure enough it ran like clockwork again with req fuel of 16.3 ms.

I can't find where I went wrong, can you help me?

Short engine specification :

Log files


The V8

I got rushed into a short job on a V8 which didn't start too well due to bad injector and cranking settings with large injectors, 1680 cc/min on 6.2 litre engine with gasoline = bad.

I fixed that and tuned it with the the firmware that was in the ECU at the time which was 1.1.81, after I was nearly done I upgraded to 1.1.91 and started the engine. I did some trimming at low rpm in the VE map and thought nothing of it, with these injectors it's not easy to get a perfect tune but when some load was put on the engine it ran rich.

Log files:

This is why I'm confused, the VE maps look like this with the firmwares with reasonable tuning on 0.6 bar boost :

v8-1.1.81-to-1.1.91-ve.png

It's obvious I had to remove a lot of VE to get the tune right.

Here's why, but I'm not sure it explains why I had to halve the req-fuel on the BMW :

v8-1.1.81-to-1.1.91-calc.png