ACES IV - An effective octane booster and anti-wear additive?

[FoMoCoSHO]

Fuel mileage has improved from 14.3 to 15.2

No highway except for data log blasts which certainly don't help, same amount of daily beatings.

No scientific method whatsoever except resetting my MPG gauge when I started using the ACES. Also consider I am on an E20 tune and I started ACES with straight 93.

 

[SHOdded]

Pretty good, winter gas notwithstanding!

 

[FoMoCoSHO]

I'm about to order a gallon and i still have a bottle of the race formula I haven't played with yet.

 

[Scott4957]

Nice, I was actually going to ask you about this when I PM'ed you. Didn't know if you continued to use it after the E20 tune or if it was just with 93. Wonder how this would do with 87/E20/ACES? Might not be a need to spend the extra 50 or so cents a gallon on the 93. Only Torrie could tell us.

 

[FoMoCoSHO]

Take a peek at this log.

Car was out of sorts but pay attention to AFR and knock at WOT on the dragstrip after it recovered from hitting the limiter...

 

[Scott4957]

Take a peek at this log.

Car was out of sorts but pay attention to AFR and knock at WOT on the dragstrip after it recovered from hitting the limiter...

Looks good to me if I am reading it correctly. Looks like it continues to lean it out making more power and adding more timing as it goes! Now try it with 87/E/Aces and lets see if the same thing happens! with a proper tune of course.

Also, I haven't done any logging yet but where am i missing fuel rail pressure? I don't see any high pressure fuel readings.

 

[ajpturbo]

Take a peek at this log.

Car was out of sorts but pay attention to AFR and knock at WOT on the dragstrip after it recovered from hitting the limiter...

Looks good to me if I am reading it correctly. Looks like it continues to lean it out making more power and adding more timing as it goes! Now try it with 87/E/Aces and lets see if the same thing happens! with a proper tune of course.

Also, I haven't done any logging yet but where am i missing fuel rail pressure? I don't see any high pressure fuel readings.

That log , if its the one he sent me had issues. But didnt seem unhealthy

There is an obd pid called fuel rail pressure...or fuel rear pressure will work but that has to stay in mpa...i like seeing psi....this is for livelink gen 2

 

[Scott4957]

There is an obd pid called fuel rail pressure...or fuel rear pressure will work but that has to stay in mpa...i like seeing psi....this is for livelink gen 2

Thats the one, missed it and that it was in MPa. I don't suppose there is an easy way to convert it in Livelink? Anyways, yes there was some weird readings at the front of the log, but I see what he is getting at, looks good.

 

[ajpturbo]

When u are selecting your items or configure the log on the right you can get a drop down and change units...but not for rear pressure

 

[FoMoCoSHO]

Take a peek at this log.

Car was out of sorts but pay attention to AFR and knock at WOT on the dragstrip after it recovered from hitting the limiter...

Looks good to me if I am reading it correctly. Looks like it continues to lean it out making more power and adding more timing as it goes! Now try it with 87/E/Aces and lets see if the same thing happens! with a proper tune of course.

Also, I haven't done any logging yet but where am i missing fuel rail pressure? I don't see any high pressure fuel readings.

That log , if its the one he sent me had issues. But didnt seem unhealthy

There is an obd pid called fuel rail pressure...or fuel rear pressure will work but that has to stay in mpa...i like seeing psi....this is for livelink gen 2

It is that log. And the car definitely had a glitch but at least it provided some interesting data.

It's highly doubtful I'm ever going to take the time experimenting with 87. I have no interest in fuel economy whatsoever. The add packs alone are worth it to me to justify the expense on top tier 93. Maximum power without grenading my engine is what I'm after. If I pick up some MPG along the way, that's just a bonus.

My experiences and research so far tell me that there is probably MPGs to be had experimenting with ultralean part throttle and cruise operation.

 

[Dxlnt1]

I am glad that someone was able to scientifically qualify what I had been saying all along.

My experience with ACES is good. It is allowing me to run the 93 tune with only 91 fuel available. And the difference between those tunes is night and day.

On my truck, (2004 Yukon XL) I am seemingly picking up roughly 2 mpg using the ACES.

Mr. T, I do you notice your LOR and LTFT numbers all over the place? I have seen LOR go to -5 but KR stays maybe -2. The LTFT numbers are like a digital readout all over the place. My thinking is maybe the ECU cannot interpret the LOR with the ACES. But all other performance eta is good.

 

[FoMoCoSHO]

Who is Mr T?

 

[Dxlnt1]

Uh, you! Lol.

 

[SHOdded]

You can get psi from MPa by multiplying by 145.0377 inside the CSV.  There is a slight knock towards the end.  Max FRP turns out to be nearly 2700 psi, min around 150 in this log, so looks good.  FRP does seem to drop a bit when the knock shows up at around 100 mph.  Doesn't seem likely, but maybe the ACES not being so effective at higher speeds?

BTW:  Their Mr T had a fear of flying, our Mr T does not LOL ...

 

[ecoboostsho]

I am glad that someone was able to scientifically qualify what I had been saying all along.

My experience with ACES is good. It is allowing me to run the 93 tune with only 91 fuel available. And the difference between those tunes is night and day.

On my truck, (2004 Yukon XL) I am seemingly picking up roughly 2 mpg using the ACES.

Mr. T, I do you notice your LOR and LTFT numbers all over the place? I have seen LOR go to -5 but KR stays maybe -2. The LTFT numbers are like a digital readout all over the place. My thinking is maybe the ECU cannot interpret the LOR with the ACES. But all other performance eta is good.

Do you mean -0.5 for LOR?  It should never got to "-5" unless you are using a different formula?  LOR isn't actually measured but inferred from knock so I don't see how ACES could directly impact your LOR value or prevent the ECU from adjusting it.  If you are getting excessive knock the ECU will dial back the LOR...

FoMoCoSHO  - I know we've discussed this before but I have actually been playing with LOR quite a bit lately and if I hit +4 or greater KR the car instantly adjust the LOR...Same is true for -4 KR (or if you are using ignition correction then switch those numbers around...)  I believe you said your car had to see knock for some time before LOR was adjusted so I'm starting to think it is adjustable in the tune - which would hardly be surprising.  Maybe LME is just taking LOR down right away if it sees knock...

 

[FoMoCoSHO]

Oar is -1 and never moves.

Trims are stable and lambda is set for 13.54:1

Attached pic is idle after warmup. Cruise is same. Car is still removing fuel especially at startup and a bunch during non shutoff decel.

 

[ajpturbo]

I noticed the other day that there are min and max values for LOR in the tune...stock is -1 and 1

 

[FoMoCoSHO]

I noticed the other day that there are min and max values for LOR in the tune...stock is -1 and 1

Thank you for clarifying that. Some of these formulas are goofy which worries me some aren't getting correct data.

Is it called LOR learned octane ratio or oar octane adjust ratio in the ecm?

 

[FoMoCoSHO]

I am glad that someone was able to scientifically qualify what I had been saying all along.

My experience with ACES is good. It is allowing me to run the 93 tune with only 91 fuel available. And the difference between those tunes is night and day.

On my truck, (2004 Yukon XL) I am seemingly picking up roughly 2 mpg using the ACES.

Mr. T, I do you notice your LOR and LTFT numbers all over the place? I have seen LOR go to -5 but KR stays maybe -2. The LTFT numbers are like a digital readout all over the place. My thinking is maybe the ECU cannot interpret the LOR with the ACES. But all other performance eta is good.

Do you mean -0.5 for LOR?  It should never got to "-5" unless you are using a different formula?  LOR isn't actually measured but inferred from knock so I don't see how ACES could directly impact your LOR value or prevent the ECU from adjusting it.  If you are getting excessive knock the ECU will dial back the LOR...

FoMoCoSHO  - I know we've discussed this before but I have actually been playing with LOR quite a bit lately and if I hit +4 or greater KR the car instantly adjust the LOR...Same is true for -4 KR (or if you are using ignition correction then switch those numbers around...)  I believe you said your car had to see knock for some time before LOR was adjusted so I'm starting to think it is adjustable in the tune - which would hardly be surprising.  Maybe LME is just taking LOR down right away if it sees knock...

ACES suppresses knock so id say it directly impacts LOR. Maybe ajp can tell us what stock behavior calls for. Knock hasn't affected LOR for me either car tuned or stock. A +7 on the 2013 didn't cause it to change. The way the car is now, KR is rare and a small amount.

I would like to know how it is supposed to behave though. When I bought the car it was at plus one until I added 93 and then it started moving to -1 so I'm confident it is functioning.

 

[ecoboostsho]

I am glad that someone was able to scientifically qualify what I had been saying all along.

My experience with ACES is good. It is allowing me to run the 93 tune with only 91 fuel available. And the difference between those tunes is night and day.

On my truck, (2004 Yukon XL) I am seemingly picking up roughly 2 mpg using the ACES.

Mr. T, I do you notice your LOR and LTFT numbers all over the place? I have seen LOR go to -5 but KR stays maybe -2. The LTFT numbers are like a digital readout all over the place. My thinking is maybe the ECU cannot interpret the LOR with the ACES. But all other performance eta is good.

Do you mean -0.5 for LOR?  It should never got to "-5" unless you are using a different formula?  LOR isn't actually measured but inferred from knock so I don't see how ACES could directly impact your LOR value or prevent the ECU from adjusting it.  If you are getting excessive knock the ECU will dial back the LOR...

FoMoCoSHO  - I know we've discussed this before but I have actually been playing with LOR quite a bit lately and if I hit +4 or greater KR the car instantly adjust the LOR...Same is true for -4 KR (or if you are using ignition correction then switch those numbers around...)  I believe you said your car had to see knock for some time before LOR was adjusted so I'm starting to think it is adjustable in the tune - which would hardly be surprising.  Maybe LME is just taking LOR down right away if it sees knock...

ACES suppresses knock so id say it directly impacts LOR. Maybe ajp can tell us what stock behavior calls for. Knock hasn't affected LOR for me either car tuned or stock. A +7 on the 2013 didn't cause it to change. The way the car is now, KR is rare and a small amount.

I would like to know how it is supposed to behave though. When I bought the car it was at plus one until I added 93 and then it started moving to -1 so I'm confident it is functioning.

I think we are saying the same thing - I just meant that there isn't an actual Octane Sensor (which I know you know)- Aces affects knock which in turn affects LOR - to me that isn't direct but I get what you are saying.

I would definitely be interested in anything AJP can tell us...I would like to understand how it works.