RomRaider

I generally use the 'Text to Columns' feature which does the same thing and lets you specify which type of delimiter. But in the case of these two datalogs there is no delimiter. No space, no semicolon, no comma etc.

there is delimiter! tab. here they are:

I didn't see an issue with copying the ms41.2 light throttle vanos table and axis to my ms41.1 so I just did that and zeroed out last two columns from 2000 RPM and up.

Thanks. Looks like that doesn't keep VANOS on. There must be another condition that turns VANOS off if throttle is closed or something.

yes, you are right! there are some before checks for VANOS OFF:
- if LV_IS
- if LV_PU AND N_32 < value from 102DCh (4000 rpm)
- if LV_PUC AND N_32 < value from 102DCh (4000 rpm)

so for VANOS ON during PU | PUC we need to decrease partial 2DCh to, say, 1152 rpm -> set value to 24h from 7Dh.

So if I'm understanding right..Stock the vanos is on during deceleration above 4000 rpm? And can you check if 0x2FBh is the same for ID90?

its not always on.
its forced to off below 4000 rpm AND pu-puc, otherwise ecu start to check for tps angle for simplified (if >60 degree) or rpm-temp against maf 3d table.

0x2FBh? this is LSHPWM_FAC_i gradient limitation in case of un-controlled oxygen sensor heater in ms412. its 02h.
and its 14h (!) at 0x0204h in ms411.

I was asking what the Vanos limitation RPM is on ms41.1 id90?

hmm. no limitation... MS412 only.

That is too weird. Judging by the logs it is definitely off. I'll play around with the values of the vanos table some this weekend.

Got some nice results with -25* today which brings my decel timing to around 5 to 10* advanced. Logs show vanos is still off even after setting the light throttle table to low values. Ms41.1 may be handicapped here unless there's still something that hasn't been found yet. I'll do some more testing with different decel retard settings tomorrow.

Nice. Do another video and share your settings once you're happy with how it sounds.

I'm not even sure we want VANOS to be on during this since it may cause a backfire through the intake since the intake valves will be slightly open during combustion. We want a nice controlled misfire resulting in that sweet afterfire sound.

So neg 40 on the decel retard was posted earlier.

Here is neg 30
http://youtu.be/sxR8T63zaJM

And neg 25
http://youtu.be/7LLZ8M5xuIw

Weather should be close to 60 degrees tomorrow so I can test more.

Cool, I think I like the -30 sound better. And your exhaust is pretty quiet! Is the muffler a straight-through design?

I'd like to hear it from a higher RPM too.

You can also try increasing the 'Step Size' at high RPM to reduce the delay between letting off the throttle and getting retarded ignition.

Any observations when driving and shifting? Does the RPM 'hang' a bit in between shifts? If so, you can adjust the 'Step Size' bigger to retard ignition quicker.

Nice results so far. I think it makes the car more enjoyable to drive.

It pops between normal shifts. I haven't noticed any hang. I'll pay closer attention next time.

It's an AA track pipe and AA gen3 catback. The catback had a massive silencer which is why it sounds so muffled. But yes it's all straight through. Loud exhausts = tickets in my area. This setup is nice because it's catless and screams at wot but quiet normally.

I'm curious how these settings compare with the s52 as the stroke is different.

The plan is to have better videos tomorrow.