RomRaider

It has always bothered me that with the GR STis (and any other Subarus that have the Si drive), I mode mapping switches to S mode mapping if you go WOT for too long. I would really like to have all three modes have separate throttle mapping and boost targets but this switching doesn't allow I mode to be useful for maintaining its own profile.

I always wondered if this was in the rom or outside the rom and the ECU was just getting an input telling it the mode needed to switch. Well I happened to be browsing around the site of another Subaru tuning solution out there and saw that there is indeed a way to tune this behavior.

Is anyone interested in trying to define this logic? I'll be happy to test it on my 2011 STi w/ RomID AE5I910V

Thanks!

Already found the parameters you're referring to in the 'other' tuning solution

Will look for them in your rom.

Thank you sir!

Ok, Ecuflash definition:


I'm relatively certain that these are the parameters - but this is Alpha stuff!

I haven't read up on tuning tips for this, but I would think that you can either set the counter significantly higher (given that it's uint16, a maximum of FFFF hex) or potentially set the accelerator pedal angle higher, to a level that it cannot be reached.

Thank you!

I'm seeing a counter value of 20 and a throttle percent value of 100.00 - does that sound right?

I think I will probably try the method of raising the throttle % value above 100% to see if that disables the logic.

Yes - exactly what you should be seeing.

FYI: It is only GR STi

Liberty/Legacy do not have an I Drive switch out point I can get them to hold wastegate boost pressure indefinitely in I mode

Thanks for the info. I noticed that a LGT Spec B I tuned not too long ago didn't seem to be making a switch so I was wondering if that might be the case.

I wonder though, do they simply not even have the logic (or these tables) or are they tuned to not switch ie the throttle % is above 100 or the counter is very high. I'd be curious to know.

I believe the logic / parameters are not in any roms other than the GR's.

So - any feedback?

I created a map with accelerator pedal angle set to 110% but the weather was s*** here this morning so I didn't drive my STi. I'm planning to give it a try over lunch.

Reporting back on this.

Setting the accel pedal angle over 100% did the trick. I set it to 110% and I didn't mode didn't switch to S mode. Requested Torque and throttle opening stayed at the targets though a long 4th gear WOT pull. I thought maybe it didn't work at first but it was just my turbo boost creeping; cold night here.

Thanks again!

Excellent - glad it worked out!

This is what I'm looking for! Would you happen to have the addresses for an AZ1J500G, 2011 EDM STI?

TIA

Requesting for AZ1G202G and AZ1J500J as well