RomRaider

that's Russian, not German

Lol I thought I had type Russian. All work and no sleep will do that to you I guess.

I worked on the Group N ROM some more. Will make the next def update. Some interesting tidbits:

1. It is purposefully setup to not respond to any knock event. FBKC and FLKC are disabled. It appears the IAM is enabled, but the advance map is effectively disabled (2x2 table, no correction) so the IAM has no impact on timing whatsoever. The only thing a dropping IAM will impact is to disable boost control if low enough. Initial IAM is set to 16.
2. Target boost, Initial/Max WGDC and some other tables use TPS voltage rather than throttle opening angle.
3. Primary Ol fueling, Base Timing, and AVCS use MAP instead of load.
4. The ignition retard anti-lag is straightforward - I'll be adding the ability to tune this to the defs.
5. The fuel enrich anti-lag I'm not 100% sure on, but it appears to simply dump fuel by opening all 4 injectors - nothing really tunable there short of a hack. There could be the capability to tune the progression from fuel dump to normal fueling, but not something I have time right now to investigate.
6. There are number of conditions that all must be met in order for the anti-lag and launch control to be active (RPM, ECT, etc.). Some of the fueling, timing, and AVCS multiple table switching is based on these "Group N" conditions. Launch control has additional thresholds that are also tuneable. As mentioned before, the IC autowash input is required for anti-lag/LC (i.e. it has to be on).
7. I've explained how SD works in an earlier post.

Awesome Merch! I would really like to play w/ that.
Absubtle
CO

keep in mind my experience with this was that my non-ic spray equipped usdm 16bit ecu DID go into anti-lag/lc mode, and stayed there until i forced rpms down by braking with the car still in gear.

fwiw
ken

With the same hardware as the Group N ECU, this shouldn't occur, but that IC switch input might be used for something else in the USDM ECU or some other difference in the hardware that is causing the IC autowash bit to be seen as on. I thought your car wouldn't start when you tried to flash the Group N rom?

july 12:



fwiw...

Sounds like the anti-lag was active - it does impact IACV duty. Likely that IC switch input is the problem for the USDM ECU. If you are game, I can send you some custom logger defs to verify if that is the case. If it is, then I can add a "fix" to RR that when enabled will use the defogger switch instead.

i'm game. send 'em whenever and i'll check it out.

I've only tuned boost on this Group N yet and boost management is just wonderfull ! Definition seems to go only to 4000RPM, then, boost is just falling ... need to continue reverse in order to get it working after 4000. Any trick Merchgod ?

I don't see anything that would indicate it would cut boost after 4000 RPM. What do you mean exactly?

have you got the GroupN restriction just before the turbo ? if yes, it is completly usual that the boost fall down. After some RPM, the air can not come more cause of the restriction, and the boost fall down automaticly...

True and remember this Map is for Grp N so at it's current state is tuned with the 32mm restrictor in consideration.

Most true while using the 32mm restrictor, but even without it, we still have this behavior. Need to log and see more for this one with debug session !!.

the boost targets drop off rapidly in the OEM tune in the mid-upper 4000 RPM range, to the point where you are targeting less boost than even an OEM 02 USDM WRX (obviously the OEM tune on the Group N ROM has the restrictor in mind). Or are you saying boost is disabled completely (i.e PWDC = 0)? You'll need to be more specific.