[badass335]

Been reading through but not getting the answers i'm looking for! I have V2 on 90% settings. The car is making boost around 14.4 - 14.9psi logged. This is all on 94 Octane. Now for my question, if I put in some 109 Octane fuel, do i adjust the torque settings again as I remember Shiv mentioning running higher torque settings with race fuel or does procede and the ecu adjust for me?

BTW, all i have is just V2. Otherwise the car is stock.

[uhcoug2011]

Originally Posted by badass335

Been reading through but not getting the answers i'm looking for! I have V2 on 90% settings. The car is making boost around 14.4 - 14.9psi logged. This is all on 94 Octane. Now for my question, if I put in some 109 Octane fuel, do i adjust the torque settings again as I remember Shiv mentioning running higher torque settings with race fuel or does procede and the ecu adjust for me?

BTW, all i have is just V2. Otherwise the car is stock.

yes...if you use a higher octane fuel you can adjust the torque settings accordingly

[boosted305]

I was told that the 90% tq setting is the default for V2 for 91 octane in CA. and that since we have 93 octane in FL. I should be able to bump it up to 92% with no problem.

In my post showing my V2-only dyno...Shiv responded and mentioned 94%...I am trying to get clarification if I can go to 94% with no problem...

but I would imagine that if you are getting 94 octane you should definitely be able to go to 92% at least....


anyone?

[uhcoug2011]

Originally Posted by boosted305

I was told that the 90% tq setting is the default for V2 for 91 octane in CA. and that since we have 93 octane in FL. I should be able to bump it up to 92% with no problem.

In my post showing my V2-only dyno...Shiv responded and mentioned 94%...I am trying to get clarification if I can go to 94% with no problem...

but I would imagine that if you are getting 94 octane you should definitely be able to go to 92% at least....


anyone?

Shiv stated that you can you use 1% below your octane level so for example with 94 octane you can safely bump your setting to 93%

[e90AW335i]

Originally Posted by uhcoug2011

Shiv stated that you can you use 1% below your octane level so for example with 94 octane you can safely bump your setting to 93%

You got in backwards bro...

One percent point above octane....

92% for 91, 94% for 93, etc...

But this is all depending on what the boost logs say. If at any time your boost is higher then 15psi then you need to lower the settings. G/L

[digi]

Originally Posted by uhcoug2011

Shiv stated that you can you use 1% below your octane level so for example with 94 octane you can safely bump your setting to 93%

I'm a little confused here. If I'm not mistaken, isn't the maximum allowable boost of 14.5-15 psi on 93-94 octane what really matters rather than the relation of torque % to octane level? For example, some have reported to hit the peak of 14-15psi on just the standard 90%(on either 91 or 93 octane), canceling the need to raise user torque %. If and only if at 90% you are not hitting those boost levels, as shiv has instructed, can you raise torque % until boost levels comply. In other words, if I'm seeing 14.5-15 psi at 90% on 93 octane, there is no need for me to up it to 93-94%, no matter the correlation of octane rating.

Now, once higher than 93 octane is involved(race fuel/100+ octane), then I assume that the max boost limit is not so much of a factor. Correct me if I'm wrong guys, but this is the way I understood it. Plus I want to adjust my settings as well and could use some clarification.

[e90AW335i]

Originally Posted by digi

I'm a little confused here. If I'm not mistaken, isn't the maximum allowable boost of 14.5-15 psi on 93-94 octane what really matters rather than the relation of torque % to octane level? For example, some have reported to hit the peak of 14-15psi on just the standard 90%(on either 91 or 93 octane), canceling the need to raise user torque %. If and only if at 90% you are not hitting those boost levels, as shiv has instructed, can you raise torque % until boost levels comply. In other words, if I'm seeing 14.5-15 psi at 90% on 93 octane, there is no need for me to up it to 93-94%, no matter the correlation of octane rating.

Now, once higher than 93 octane is involved(race fuel/100+ octane), then I assume that the max boost limit is not so much of a factor. Correct me if I'm wrong guys, but this is the way I understood it. Plus I want to adjust my settings as well and could use some clarification.

I am not sure about the last part, but as far as 93 octane is concerned DO NOT GO OVER 15 PSI.

[badass335]

Originally Posted by digi

I'm a little confused here. If I'm not mistaken, isn't the maximum allowable boost of 14.5-15 psi on 93-94 octane what really matters rather than the relation of torque % to octane level? For example, some have reported to hit the peak of 14-15psi on just the standard 90%(on either 91 or 93 octane), canceling the need to raise user torque %. If and only if at 90% you are not hitting those boost levels, as shiv has instructed, can you raise torque % until boost levels comply. In other words, if I'm seeing 14.5-15 psi at 90% on 93 octane, there is no need for me to up it to 93-94%, no matter the correlation of octane rating.

Now, once higher than 93 octane is involved(race fuel/100+ octane), then I assume that the max boost limit is not so much of a factor. Correct me if I'm wrong guys, but this is the way I understood it. Plus I want to adjust my settings as well and could use some clarification.

This is where i'm coming from as well. If i can achieve a max boost of 14.9psi on 90% settings, then do I do something special if i use 109 octane? I mean, i'm already at max allowable boost as per Shiv. Just wanted to get clarification on this. Do we change other perimeters to utilize the higher octane or rely on the ecu/ procede to make the adjustments.

The 1 below octane rule doesn't apply unless someone is going to be at 108% using VP109

[badass335]

Originally Posted by uhcoug2011

yes...if you use a higher octane fuel you can adjust the torque settings accordingly

The question is what do I adjust the settings to? I mean, i'm already running boost of 14.8 - 14.9 psi. I doubt i can raise the settings more as I would be over 15psi boost for sure.

[digi]

Originally Posted by badass335

This is where i'm coming from as well. If i can achieve a max boost of 14.9psi on 90% settings, then do I do something special if i use 109 octane? I mean, i'm already at max allowable boost as per Shiv. Just wanted to get clarification on this. Do we change other perimeters to utilize the higher octane or rely on the ecu/ procede to make the adjustments.

The 1 below octane rule doesn't apply unless someone is going to be at 108% using VP109

I think the 1+/- the octane rule applies more for anything above pump gas. For instance, 95% would be safe for 94-95 octane, 97% for 98 octane, and 100% would be sufficient for anything 100+ octane.

[Sniz]

if you are boosting that high I would leave it alone....also install a good boost gauge to be sure.

[Tuned335i]

Originally Posted by badass335

Been reading through but not getting the answers i'm looking for! I have V2 on 90% settings. The car is making boost around 14.4 - 14.9psi logged. This is all on 94 Octane. Now for my question, if I put in some 109 Octane fuel, do i adjust the torque settings again as I remember Shiv mentioning running higher torque settings with race fuel or does procede and the ecu adjust for me?

BTW, all i have is just V2. Otherwise the car is stock.

You should consider yourself fortunate and don't screw with your car LOL!!!!

I was running low 14.x psi until I started screwing around with the torque settings. I run a 50-50 mix of 91/100oct only, from the day after I installed V1.47. Upping the user torque setting caused my boost to decrease, even after almost 100 miles of daily driving with a dozen or so trips to redline (no limps). I'm back to 91% and seems to be nearly back to normal. My Forge DVs just shipped...

[boosted305]

If there was ever a post that called for a Shiv-clarification response...this is it!


Shiv?

[LambOfGod]

After reading the Shiv Report on engine load I'm not really sure that the max 15PSI setting means a whole lot. I think it is more like a starting point because the TMAP takes over and monitors engine load base on density of air then adjusts the PSI accordingly. I think we need more input from Shiv that provides details on how to read the drop off PSI data rather than the max psi data. So if we are running 91 octane then the psi should be no higher than 11PSI and 94 octane should be no higher than 12.5PSI. Shiv have been very adement about the peak PSI doen't really matter as much as engine load. Perhaps he uses peak as a CYA. Everyone is hung up on the Max or Peak PSI and I'm not sure we should be concerned with this as much as the rest of the pressure data. Just say'n.

[midlife]

Originally Posted by badass335

Been reading through but not getting the answers i'm looking for! I have V2 on 90% settings. The car is making boost around 14.4 - 14.9psi logged. This is all on 94 Octane. Now for my question, if I put in some 109 Octane fuel, do i adjust the torque settings again as I remember Shiv mentioning running higher torque settings with race fuel or does procede and the ecu adjust for me?

BTW, all i have is just V2. Otherwise the car is stock.

subscribed

[Supramano]

Originally Posted by LambOfGod

After reading the Shiv Report on engine load I'm not really sure that the max 15PSI setting means a whole lot. I think it is more like a starting point because the TMAP takes over and monitors engine load base on density of air then adjusts the PSI accordingly. I think we need more input from Shiv that provides details on how to read the drop off PSI data rather than the max psi data. So if we are running 91 octane then the psi should be no higher than 11PSI and 94 octane should be no higher than 12.5PSI. Shiv have been very adement about the peak PSI doen't really matter as much as engine load. Perhaps he uses peak as a CYA. Everyone is hung up on the Max or Peak PSI and I'm not sure we should be concerned with this as much as the rest of the pressure data. Just say'n.

+1 i dont think peak boost is what we should be worrying about. Ive noticed my engine load is much higher than others. Id like shiv to chime in and tell me if these numbers are safe for my engine...or anyone else, are your engine loads this high.

[LambOfGod]

Originally Posted by Supramano

+1 i dont think peak boost is what we should be worrying about. Ive noticed my engine load is much higher than others. Id like shiv to chime in and tell me if these numbers are safe for my engine...or anyone else, are your engine loads this high.

Wow! That looks nice. What is the % set at. Also, since we are talking Engine Load I think it would be nice to know your Ambient Temperature. Shiv explained that the ECU calculates based on air Density and the TMAP is temperature compensated. Perhaps the Ambient Temp is not a crucial?

[e.n335]

Originally Posted by Supramano

+1 i dont think peak boost is what we should be worrying about. Ive noticed my engine load is much higher than others. Id like shiv to chime in and tell me if these numbers are safe for my engine...or anyone else, are your engine loads this high.

My engine load numbers are as high as yours. Why should this be a problem ?

[Supramano]

I was just looking at others datalogs and saw a peak of 80 on some...mine goes above 80 and it doesnt show it on the chart...i thought engine load is what we have to be careful about...if the procede software scales it the highest to 80...then why does mine go way above it...its completely off the scale...if others are like this then im not worried...i have the torque setting to 90%, and im already getting 14.8. Do you guys think if i up it a percent or 2 the boost taper would get better or worse?

[badass335]

I'm still trying to understand what is involved when increasing the torque values. I mean, I understand that timing, fuel boost etc are adjusted. What else is being adjusted? And my original question, do we have to make adjustments to compensate for the higher octane, (104 or 109)? Are there other perimeters that we can adjust to get a custom tune.

[Supramano]

Originally Posted by badass335

I'm still trying to understand what is involved when increasing the torque values. I mean, I understand that timing, fuel boost etc are adjusted. What else is being adjusted? And my original question, do we have to make adjustments to compensate for the higher octane, (104 or 109)? Are there other perimeters that we can adjust to get a custom tune.

I dont think anyone knows... i mean shiv came out with these torque values and not much explanation was given. I understand were are not to surpass 15psi on pump gas..but no one answers clearly whether we can increase the values on race octane. Your guyess is as good as mine...i wouldnt go above 15psi unless shiv states we can. Right now im at 90% and am seeing 14.8...i dont knw whether i can go higher.

[badass335]

Originally Posted by Supramano

I dont think anyone knows... i mean shiv came out with these torque values and not much explanation was given. I understand were are not to surpass 15psi on pump gas..but no one answers clearly whether we can increase the values on race octane. Your guyess is as good as mine...i wouldnt go above 15psi unless shiv states we can. Right now im at 90% and am seeing 14.8...i dont knw whether i can go higher.

I hear ya, man! I'm trying to maximize the octane as we pay almost $15/ a gallon. If it does me no benefit, why spend it. I'll just run the 94 Octane we have at the pumps. PLUS, it would be beneficial to actually know what our cars are doing. A lot of guys are running 100% and not really knowing what/ why they are doing it. More info is required and as some posted... GOOGLE has not helped!!!!