RomRaider

What is the purpose of the 'Speed Density Maximum Load Limit' table? I set mine so as not to have an artificial ceiling.

The Map Switching logic is absolutely fantastic. Injectors, Tip-In Enrichment, Cranking, Warm-up enrichment, Fuel Targets, VE map, Timing, Boost are all switchable! An E85 tune can now be in perfect harmony with a 93 octane tune without having to reflash after switching fuels! Words cannot describe how awesome this is. Thank you very very much!

Not really any purpose for the Maximum load, I just max this table out. Right now I believe the ROM has a load limit of 4.0g/rev. Now that I think about it im going to do a modification to raise this limit for higher horsepower cars.

But yeah this is going to be great for E85, soon I will be working on incorporating an ethanol sensor to make things completely flex fuel

I'd love to see that! If there's anything I can do to help let me know!

I think I'm going to give the AT/MT thing a try on my car. I had played with the idea and written bits of the code a while back but the defogger switch being momentary and my lack of creativity put a stop to that project. Hopefully I'll get off my ass and wire a switch up sometime this week, I'll let ya know how it goes. Not much free space in 04+ roms, so the alternate timing map is a bit smaller, I used the fueling failsafe map, and there is no alternate boost map(I have a gauge, I don't care) I wonder if we could delete the TGV portion of the rom and use it to free up space for those of us with deletes...played with that at all? I suppose if you've just been working on the SD rom you wouldn't have. I'm jealous of the amount of free space in that rom

Andy

True but aggressive spool maps tend to alter D range over time although it may not be needed with this rom.

Ive only glanced over the TGV stuff so far, im not sure how much total space it takes up yet. I bet you could gain a decent amount of space by taking out OBD check routines though, stuff like the TGV and OCV error checking takes up a lot of space. The only thing that sucks is table data really needs to be after RAM to make things efficient. But yeah I feel like im swimming in free space with the groupn ROM lol. Most of the code mods have been small amounts of code but the map switching was pretty large, especially with all the table data. But it really didn't even put much of a dent in the amount of available free space. Ive got about 10,000 bytes of space and the extra tables took up around 1,300.

Amazing stuff Carbibbles !

Keep up the good job !

Awesome job... thanks a lot!!!

LC Static Fuel/Timing:
I noticed the AFR sensor doesn't read below 10 to 11AFR. So setting this fuel target to 9 would not be good correct?
Do these tables affect ALS at all?

Thank you Sir for bringing all these new features for Romraider tuning community! Looking forward for ethanol sensor input. Also map switching on fly is so cool and we are one step closer to real time tuning now. I tried smoothing out partial throttle timing using binary changes between timing map 1 and 2 by I/C auto switch.

I see this method could help tuning AVCS tuning on partial throttle if there was also "Map 2" for AVCS. I understand that when "Anti-lag conditions met" AVCS map is applied, the IACS is open thus skewing VE?

This may be a stupid idea and may not be applicable but would it make sense to program one of the TGV inputs to adjust base level of ignition timing or AVCS map? Basically this would be a handy tuning tool for realtime ignition or AVCS adjustments using a pot wired to TGV input.

Carbibbles, do you know if GroupN rom has any software related limitations why MAP sensor offset can't be a positive number? GM 3bar MAP users can't get proper calibration to MAP sensor due to this limitation.

Since the launch control is fuel cut I usually set the fuel target low so that when it actually does inject fuel briefly, it injects enough to help spool the turbo. Combined with negative timing (firing ATDC) this will raise the amount of boost you will acheive with launch control. You wont really be able to get any AFR readings with your O2 sensor since it will just be a jumble of lean and rich spikes. These tables do not affect ALS





Im not quite sure what you are saying about the partial throttle timing? I could definitely add an AVCS Map2, I didn't think of this one since I dont have AVCS. The IAC valve being open should not skew VE since it is basically just allowing more air into the manifold and VE is the ratio of air in the manifold to air that makes it into the cylinder. SubeBoost contacted me about the MAP sensor offset issue and im going to code a "fix" for this that will allow positive offsets

The only diagrams I have use B134, B135, B136, B137, and B84 for ecu pinouts. I believe B136 would be "E" but I wanted to double check. Thanks!

Andy

ok so looking into this and the fact that im putting an a ver8 jdm ecu and engine at the moment and having to wire up my avcs solenoids and sensors has made me lok at all the ecu pins to find out what they do, so i have some questions
since i have a JDM ecu cant i just use a switch off of B12 since mine actually functions, and this would allow me to switch maps???
also i think a second open loop fueling table would be great especially for the e85 people, i dont know about other but when i tune e85, it has to be significantly leaner, and right now i would switch, it would adjust injector size and all that, but i would be running really really rich.
also on rev2 of the original group N map you could go in and change ignition dwell and it had all the idle maps, would you be able to add that in to this map, it would help with allowing you to have lower than 1000 idle and the ability to adjust ignition dwell actually will help with power

also how do we actually know the maps are switching?? would be good to fill up with E85 switch maps and the car not actually switch

Sorry for being unclear. I was referring to low load region ignition tuning method presented by Sasha_A80 in this thread: http://www.romraider.com/forum/viewtopic.php?f=15&t=4501. I see the "binary" realtime tuning feature provided by map changing would be useful for utilizing this method.


I may have used the definition of VE wrongly. I meant to say that I artificially restrict engine VE by applying constant, say 50%, throttle and log manifold pressure. Next I click map change button to change AVCS say +/-5deg with same throttle and other conditions and I log manifold pressure. Lower manifold pressure should tell that engine is breathing better and point me to right direction regarding AVCS settings.

The problem with original groupN rom is that the IAC valve is opened when "anti-lag conditions met" mode is activated and thus manifold pressure is affected by IAC valve.


Great news! Thank you very much for your efforts!

I don't think you re either using the correct rom, using the correct defs, using the correct version of rr. All the things you mentioned are in the rom.

When you switch maps you would know if it didn't switch. Your car would run like crap if going from e85 to 93 or vice verse.

Ok, I see what you are saying. That is definitely a useful way to utilize the map switching for fine tuning. I really think that I could implement a realtime tuning system at least for the timing and maybe the SD load comp map, but the issue is I wouldn't be able to code the PC software side of things. Maybe I can work with the romraider developers on this.

In the meantime I will put an AVCS "Map2" on the to-do list