boost enhancement start/stop
For those interested in this but not extremely code-saavy here is what Evo Kid helped me with. Perhaps it can be of some help to others like myself.
In my case the adress needs to be changed to 1684, b/c I have an '03 VIII. Once you change the adress, the variable in the "boost enhancement (anti-lag) stop RPM" will be 7000, which you then change to what you wish.
One last question though, from above, I believe Banks says something about needing to put in "48" so that it translates to 1500? Or am I good just imputting "1500" into both fields?
Originally Posted by PM convo
Me:
hey man, could you walk me through how you "disabled" your boost enhancement? Banks is just too smart for me to understand and I dont want to keep bothering him with my silly redundant questions. I have no idea how to alter a definition. I could probably bring up that screenshot that he posted, but I really have no idea how to put what where.
Evo Kid's response:
Open up a EVO IX rom with ECUFlash.
Go to "boost enhancement (anti-lag) Stop RPM"
Right click on it and select "edit map"
Change the address to "1284", click apply, then OK
Make both the "boost enhancement (anti-lag) Stop RPM" and the "boost enhancement (anti-lag) Start RPM"
the same. I set both at 1500rpm.
hey man, could you walk me through how you "disabled" your boost enhancement? Banks is just too smart for me to understand and I dont want to keep bothering him with my silly redundant questions. I have no idea how to alter a definition. I could probably bring up that screenshot that he posted, but I really have no idea how to put what where.
Evo Kid's response:
Open up a EVO IX rom with ECUFlash.
Go to "boost enhancement (anti-lag) Stop RPM"
Right click on it and select "edit map"
Change the address to "1284", click apply, then OK
Make both the "boost enhancement (anti-lag) Stop RPM" and the "boost enhancement (anti-lag) Start RPM"
the same. I set both at 1500rpm.
One last question though, from above, I believe Banks says something about needing to put in "48" so that it translates to 1500? Or am I good just imputting "1500" into both fields?
Last edited by honki24; Mar 29, 2007 at 05:18 AM.
When my car transitions from closed to open loop peak, from 83% to 290% loads respectively, my A:F will go directly from 14.7 to 11.5 in about 1.0 seconds clean without knock.
Now at part throttle, when this transition is in slow motion going from like 30% load to say 100% load with throttle at about 40% or less, my A:F will take a dive from stoich to 12, then jump back up to 14, dip to 13
, go back to 14
, then finally dive back into the 11's 
where it finally stabilizes. Meanwhile the knock sensor is lit and load levels never really go beyond 100%. Most importantly less throttle applied exasterbates the knocking and more aggressive throttle keeps A:F less bouncy and less knock!
What is this, would Boost Enhancement play any role in this?
Does this function render a portion of the map useless or just less responsive? Should I even worry about this since my A:F is right where I want it from 4000RPM to redline? It's from closed loop to 4000RPM, especially at part throttle, that I need to fix
Thanks
Now at part throttle, when this transition is in slow motion going from like 30% load to say 100% load with throttle at about 40% or less, my A:F will take a dive from stoich to 12, then jump back up to 14, dip to 13
, go back to 14 , then finally dive back into the 11's where it finally stabilizes. Meanwhile the knock sensor is lit and load levels never really go beyond 100%. Most importantly less throttle applied exasterbates the knocking and more aggressive throttle keeps A:F less bouncy and less knock!What is this, would Boost Enhancement play any role in this?
Does this function render a portion of the map useless or just less responsive? Should I even worry about this since my A:F is right where I want it from 4000RPM to redline? It's from closed loop to 4000RPM, especially at part throttle, that I need to fix
Thanks
that almost exactly describes my p0300 problem... All the freeze frame data I have retrieved points to your explaination of the problem.
I have a an 05 Evo 8 and I have a few questions. I am trying to do this and I want to do it right.
1. Does the 1284 number apply to the 05 Evo 8?
2. Do I only change the "boost enhancement (Anti-lag) Stop RPM" definition number to 1284?
3. My "boost enhancement (Anti-lag) Start RPM" has a 1280 definition number. I should leave that number unchanged. Correct?
Thanks for all the help guys.
1. Does the 1284 number apply to the 05 Evo 8?
2. Do I only change the "boost enhancement (Anti-lag) Stop RPM" definition number to 1284?
3. My "boost enhancement (Anti-lag) Start RPM" has a 1280 definition number. I should leave that number unchanged. Correct?
Thanks for all the help guys.
Yes, if you're current definition for antilag stop is 1282, you want to change it to 1284, if its 1682, then change it to 1684. Then go to the normal ecuFlash screen, and open the antilag stop window, you will now see 7000 in that box. Change it to 2500 if you wish to disable it. At others' advice I changed both start and stop to "1500"
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The only effect that the lean spool enable/disable has is to lean out the afr over the specified RPM range? It does nothing else? Seems kind of odd that this function would even exist.
I was under the impression that disabling the lean spool start/stop will also give you similar AFRs in every gear. With it enabled you will have a richer AFR in 4th gear vs. 3rd gear. I hope someone would chime in and correct me if I am wrong.
i would like to know the answer to this as well
When lean spool is enabled, I believe the AFR is lean from the start to the stop RPM.
When you disable it, the AFR will be richer (even with the same numbers in the fuel map) and the actual AFR will be closer to the target AFR in the fuel map.
Evolved Member
Joined: May 2006
Posts: 2,399
Likes: 6
From: UK
I've not actually tried with the lean spool disabled, I run it from 2000-7500 RPM. With a flat fuel map in the full throttle load areas and a gear aware boost control (AVC-R) the offsets between gears are sensible, still there, but that doesn't bother me - it makes sense to be richer when you have a long gear with high load as that is where the EGTs will rise and the knock threshold move towards your timing map.
I don't believe in changing things unless they make an improvement - so I still run lean spool, still run a fuel cut, still run standard factory tool compatible logging, and only change the smallest sections of code necessary to achieve my goals, unlocking existing but unused or hidden ECU functionality where I can. This way it still behaves like a stock car, just a lot faster. Just my 1pence or 2c
I don't believe in changing things unless they make an improvement - so I still run lean spool, still run a fuel cut, still run standard factory tool compatible logging, and only change the smallest sections of code necessary to achieve my goals, unlocking existing but unused or hidden ECU functionality where I can. This way it still behaves like a stock car, just a lot faster. Just my 1pence or 2c
I don't believe in changing things unless they make an improvement - so I still run lean spool, still run a fuel cut, still run standard factory tool compatible logging, and only change the smallest sections of code necessary to achieve my goals, unlocking existing but unused or hidden ECU functionality where I can. This way it still behaves like a stock car, just a lot faster. Just my 1pence or 2c
, but for those of us stuck with an USDM VIII we basically have to do a little more severe ROM adulterating.But after everything was said and done I have reset my ROM back to stock (purge it of the purchaced flashes) for a fresh starting place but now it's once again severly changed.
Nonetheless, my lean spool is still factory preset but recently managed to get a nice flat 11.8 (except 11.5 briefly at 3800rpm) in 3rd gear throughout so I aint touching them quite yet
Last edited by C6C6CH3vo; Apr 3, 2007 at 01:26 PM.
I've been experimenting with these BE values and it seems like no matter what I change for each (higher or lower) the A:F seems to respond with a higher A:F - like 13's, upon spool and peak RPM.
I got mine set to 2500 and 3500 now just for the fun of it because it' makes faster rpm slope
nice and lean with late timing
I got mine set to 2500 and 3500 now just for the fun of it because it' makes faster rpm slope
nice and lean with late timing
I've been experimenting with these BE values and it seems like no matter what I change for each (higher or lower) the A:F seems to respond with a higher A:F - like 13's, upon spool and peak RPM.
I got mine set to 2500 and 3500 now just for the fun of it because it' makes faster rpm slope nice and lean with late timing
I got mine set to 2500 and 3500 now just for the fun of it because it' makes faster rpm slope
nice and lean with late timing
Any adjustment I made, raising or lowering, to either start or stop value on BE values caused lean peaks of about 0.3. I copied JSC and raised the stop value to redline which made A:F much more stable from 4000 - redline (12.0 - 12.4:1)