RAX Patch - ROM patches
Hi Kris.
Hot off the press, please try this new revision of RAX Patch for USDM 2008 SST. That's got Atmospheric Boost Baro Compensation in it.
Remember to set "Atmospheric Boost" constant to 0. That will wake the patch up and get it feeding in a baro-sensor measured value.
Tomorrow, I'll update the first post with new links, etc. It's just too late to do it right now! I'm off to get some well-earned zzzzzzzzzzz....
Rich
Hot off the press, please try this new revision of RAX Patch for USDM 2008 SST. That's got Atmospheric Boost Baro Compensation in it.
Remember to set "Atmospheric Boost" constant to 0. That will wake the patch up and get it feeding in a baro-sensor measured value.
Tomorrow, I'll update the first post with new links, etc. It's just too late to do it right now! I'm off to get some well-earned zzzzzzzzzzz....

Rich
I have added support for Atmospheric Boost Baro Compensation patch to Evo X SST ROMs. The first post has updated download links.
Also, if anyone actually uses it, the SST Upshift Boost EC Management patch has a minor revision. I found it could be confused by jittery RPM in tall gears - in theory, this could result in upward EC being zeroed out when not actually upshifting. I've tweaked it so it's a bit less sensitive.
This whole area will get easier if/when I find a magic bitflag that means "SST Upshift in progress".
Anyway, it's dead easy to update the patch code. You can cycle the relevant "subroutine" selection from "Old Code v1r7" -> "Code PRESENT".
Seeing as there's revised/new code in the Evo X SST patch downloads, I've put all of the "Testing" status indicators back to Untested.
Enjoy!
Rich
Also, if anyone actually uses it, the SST Upshift Boost EC Management patch has a minor revision. I found it could be confused by jittery RPM in tall gears - in theory, this could result in upward EC being zeroed out when not actually upshifting. I've tweaked it so it's a bit less sensitive.
This whole area will get easier if/when I find a magic bitflag that means "SST Upshift in progress".

Anyway, it's dead easy to update the patch code. You can cycle the relevant "subroutine" selection from "Old Code v1r7" -> "Code PRESENT".
Seeing as there's revised/new code in the Evo X SST patch downloads, I've put all of the "Testing" status indicators back to Untested.
Enjoy!
Rich
Hi Richard,
I'm not sure if you are looking for suggestions, but the SST upshift management got me thinking that it might be nice to have a timing upshift management. On the CT9A and when I was looking at my old X maps we used to have to reduce timing in the shift area to prevent knock on shift (since it would rapidly enter the ~140 load / 6500RPM area of the map and have sky high timing).
Also, if you are doing NLTS or faux NLTS the upshift boost control might be helpful for 5MT too.
I'm not sure if it would help your disassembly but for the CT9A there was a bit-flag that you could log for clutch in. It would read multiple parameters through one address, but clutch and brakes were in there.
I'm not sure if you are looking for suggestions, but the SST upshift management got me thinking that it might be nice to have a timing upshift management. On the CT9A and when I was looking at my old X maps we used to have to reduce timing in the shift area to prevent knock on shift (since it would rapidly enter the ~140 load / 6500RPM area of the map and have sky high timing).
Also, if you are doing NLTS or faux NLTS the upshift boost control might be helpful for 5MT too.
I'm not sure if it would help your disassembly but for the CT9A there was a bit-flag that you could log for clutch in. It would read multiple parameters through one address, but clutch and brakes were in there.
Yeah, I've found two "brake" bitflag addresses. I bet that one of them is the clutch-bit style variable on 5MT Evos.
It would be easier checking that than the irritating way I "had" to do things. I still want to find an SST upshift bitflag. Once I find that it will allow me to do an integrated 5MT and SST version of this upshift patch.
And regarding 5MT NLTS upshift timing retard... that wouldn't be too difficult. The stock "SST upshift timing retard" code is a million times more complicated than anything we'd need for 5MT... so as long as we kept it simple, it would probably come out alright.
Rich
It would be easier checking that than the irritating way I "had" to do things. I still want to find an SST upshift bitflag. Once I find that it will allow me to do an integrated 5MT and SST version of this upshift patch.
And regarding 5MT NLTS upshift timing retard... that wouldn't be too difficult. The stock "SST upshift timing retard" code is a million times more complicated than anything we'd need for 5MT... so as long as we kept it simple, it would probably come out alright.
Rich
Hi Richard,
I'm not sure if you are looking for suggestions, but the SST upshift management got me thinking that it might be nice to have a timing upshift management. On the CT9A and when I was looking at my old X maps we used to have to reduce timing in the shift area to prevent knock on shift (since it would rapidly enter the ~140 load / 6500RPM area of the map and have sky high timing).
Also, if you are doing NLTS or faux NLTS the upshift boost control might be helpful for 5MT too.
I'm not sure if it would help your disassembly but for the CT9A there was a bit-flag that you could log for clutch in. It would read multiple parameters through one address, but clutch and brakes were in there.
I'm not sure if you are looking for suggestions, but the SST upshift management got me thinking that it might be nice to have a timing upshift management. On the CT9A and when I was looking at my old X maps we used to have to reduce timing in the shift area to prevent knock on shift (since it would rapidly enter the ~140 load / 6500RPM area of the map and have sky high timing).
Also, if you are doing NLTS or faux NLTS the upshift boost control might be helpful for 5MT too.
I'm not sure if it would help your disassembly but for the CT9A there was a bit-flag that you could log for clutch in. It would read multiple parameters through one address, but clutch and brakes were in there.
I actually haven't ever tried it on the 5MT, I wonder if it works on shifts like it does on the SST, maybe it uses the clutch switch?
applied patch to rom successfully.
flashed successfully.
logged successfully.
iat adjustment of .5 shown on partial throttle run into low boost.
baro shows 14.5
looks like a success to me!







