[Gen13 F36]

I just got back home... it's available, I just flash the v4.5 91 Oct stage 1 OTS.

[jan31]

Originally Posted by Halim@HCP

Yes for N26, for stage 1 you don't need any hardware changes.

Originally Posted by Halim@HCP

Yes for N26, for stage 1 you don't need any hardware changes.

Thanks for the info

[Snoopy8]

Does it depend on the dme that you get acn91 map and just regular 91 map? I got MY14 F31 and the first map i see is stg1 91 oct map.

[Big.Al]

Gonna clear up this confusion there is no 91 ACN map for n20/n26 model vehicles there is however for n55 from my knowledge. When I said acn 91 I was referring to the type of 91 being used on the log not the map as a whole.

[sspade]

Originally Posted by Big.Al

Gonna clear up this confusion there is no 91 ACN map for n20/n26 model vehicles there is however for n55 from my knowledge. When I said acn 91 I was referring to the type of 91 being used on the log not the map as a whole.

Why is it that an N55 would require a special ACN map when the N20 does not... when both are running the same quality fuel?

(both in Arizona California Nevada or "ACN" / 91 fuel)

Can someone explain, its a bit confusing.

ex. a friend and I meet up at Shell to fill up with VPower 91 (in California)... He has the N55 and needs to run an ACN91 map and I have an N20 and can run a regular 91 map. Why?

[wesmeister]

Originally Posted by Halim@HCP

Please get me a log on the ACN91 and send logs to support@protuningfreaks.com and I will correct and make ACN maps asap.

I will do that this weekend. We are heading into even crappier "summer mixture" territory here in California, so it's super important we get an ACN version of this.

Anything in particular you want me to log beyond the standard parameters? What kind of pulls would you like to see?

[wesmeister]

Originally Posted by sspade

Why is it that an N55 would require a special ACN map when the N20 does not... when both are running the same quality fuel?

(both in Arizona California Nevada or "ACN" / 91 fuel)

Can someone explain, its a bit confusing.

ex. a friend and I meet up at Shell to fill up with VPower 91 (in California)... He has the N55 and needs to run an ACN91 map and I have an N20 and can run a regular 91 map. Why?

California, Arizona and Nevada 91 will work. BUT, the actual quality of our states gasoline and it's RON numbers are suspect. We even have different mixtures depending on the time of year. But in short, it's way safer to run a ACN tune if available.

Based on what Halim said, he just needs logs from one us to make the minor adjustments to the tune. I'm going to try and get these logs for him this weekend.

[Big.Al]

Originally Posted by wesmeister

California, Arizona and Nevada 91 will work. BUT, the actual quality of our states gasoline and it's RON numbers are suspect. We even have different mixtures depending on the time of year. But in short, it's way safer to run a ACN tune if available.

Based on what Halim said, he just needs logs from one us to make the minor adjustments to the tune. I'm going to try and get these logs for him this weekend.

Originally Posted by wesmeister

California, Arizona and Nevada 91 will work. BUT, the actual quality of our states gasoline and it's RON numbers are suspect. We even have different mixtures depending on the time of year. But in short, it's way safer to run a ACN tune if available.

Based on what Halim said, he just needs logs from one us to make the minor adjustments to the tune. I'm going to try and get these logs for him this weekend.

I sent over a few logs to him through support and posted on here as well I'm from California as well so hopefully he can do something with them

[wesmeister]

Originally Posted by Big.Al

I sent over a few logs to him through support and posted on here as well I'm from California as well so hopefully he can do something with them

Awesome. I'll still send him some also, as I have the stock Stage 1 tune with no mods, so that might help him with that specific tune. The more data he has, the better!

[rjd_F30]

Originally Posted by sspade

Why is it that an N55 would require a special ACN map when the N20 does not... when both are running the same quality fuel?

(both in Arizona California Nevada or "ACN" / 91 fuel)

Can someone explain, its a bit confusing.

ex. a friend and I meet up at Shell to fill up with VPower 91 (in California)... He has the N55 and needs to run an ACN91 map and I have an N20 and can run a regular 91 map. Why?

You can see pretty clearly by the frequency with which they update and features that they are more concerned with the N55/B58 than N20/B48, and for good reason: they're far more popular as far as tuning goes. I would imagine this is another thing like startup roar: bigger engines get it and the N20 doesn't, even though it could work on N20.

[sspade]

Originally Posted by rjdnyy224

You can see pretty clearly by the frequency with which they update and features that they are more concerned with the N55/B58 than N20/B48, and for good reason: they're far more popular as far as tuning goes. I would imagine this is another thing like startup roar: bigger engines get it and the N20 doesn't, even though it could work on N20.

So... this essentially means that the 4cyl tunes are slightly less safe than their 6cyl counterpart? This makes me glad I havent flashed stage 2 yet.

[andino]

Originally Posted by sspade

So... this essentially means that the 4cyl tunes are slightly less safe than their 6cyl counterpart? This makes me glad I havent flashed stage 2 yet.

Not necessarily less safe, just less tested. They probably get a lot more data from 6cyl cars to work with than with the 4cyl. I don't see anything suspect with my logs other than one cylinder with lazy timing compared to the rest but nothing that indicates the car isn't healthy. Whether its Stage 1 or 2, less data would be equally impactful to each tune so staging stage 1 doesn't really mitigate any risk imo.

[sspade]

Originally Posted by andino

Not necessarily less safe, just less tested. They probably get a lot more data from 6cyl cars to work with than with the 4cyl. I don't see anything suspect with my logs other than one cylinder with lazy timing compared to the rest but nothing that indicates the car isn't healthy. Whether its Stage 1 or 2, less data would be equally impactful to each tune so staging stage 1 doesn't really mitigate any risk imo.

Considering stage 2 is more aggressive and requires hardware modifications, I beg to differ. This is just common sense. Not really worth debating. More aggressive tunes definitely stress certain parts of the engine more than less aggressive tunes.

But... on the development side, less data to work with would be equally impactful for both stage 1 and stage 2. Agreed.

[sspade]

According to Bootmod3 FB group... 91 ACN tunes are now available for flash...

[rjd_F30]

Originally Posted by sspade

So... this essentially means that the 4cyl tunes are slightly less safe than their 6cyl counterpart? This makes me glad I havent flashed stage 2 yet.

As stated above, I would not interpret that as less safe, though I would see why you may be inclined to do that. It comes down to a matter of popularity. More people are tuning the 6 cyl cars than the 4 cyl ones, so PTF devotes more time and resources to 6 cyl tunes. If something is wrong with a 4 cyl tune making it unsafe, they'll jump right on it, but they'll be less likely to add features like startup roar, or an ACN specific tune for instance.

[andino]

Originally Posted by sspade

According to Bootmod3 FB group... 91 ACN tunes are now available for flash...

I ACN91 only for PWG it looks like. Nothing for EWG maps it looks like.

[MilanF30]

My car is PWG and I can see new ACN maps for Stage 1 and Stage 2 v4.3 from February 12 2020.

[GreenF30N26]

What’s the expected increase on the stage 2 maps now that these tweaks have been made testing on stage 1? Is there a rough % between the stages knowing Stg2 has DP/FMIC upgrades. Wondering if I should just move from Stg2 map 4.3 to Stg1 map 4.5 if they will be about the same gains. Starting to get really nervous too much power for our engines.

Also, would any changes to the trans tune be necessary to compliment these new tweaks?

[GreenF30N26]

Found the answer to my own question on the PTF website. Stage 2 isn’t a huge jump from stage 1 in power as people have suggested but here are the official gain estimates to validate against. I see why the 20i engines are popping on stage 2.

N20 20i
Stage 1 91 octane: 48%HP / 54%TQ
Stage 1 93 octane: 52%HP / 56%TQ
Stage 2 91 octane: 54%HP / 58%TQ
Stage 2 93 octane: 56%HP / 60%TQ

N20 28i
Stage 1 91 octane: 16%HP / 26%TQ
Stage 1 93 octane: 18%HP / 28%TQ
Stage 2 91 octane: 24%HP / 35%TQ
Stage 2 93 octane: 26%HP / 38%TQ

[Gen13 F36]

Originally Posted by Green33

Found the answer to my own question on the PTF website. Stage 2 isn’t a huge jump from stage 1 in power as people have suggested but here are the official gain estimates to validate against. I see why the 20i engines are popping on stage 2.

N20 20i
Stage 1 91 octane: 48%HP / 54%TQ
Stage 1 93 octane: 52%HP / 56%TQ
Stage 2 91 octane: 54%HP / 58%TQ
Stage 2 93 octane: 56%HP / 60%TQ

N20 28i
Stage 1 91 octane: 16%HP / 26%TQ
Stage 1 93 octane: 18%HP / 28%TQ
Stage 2 91 octane: 24%HP / 35%TQ
Stage 2 93 octane: 26%HP / 38%TQ

Wait... what is this?

First post on this thread comes with a dyno for 283HP / 324 LBTQ from a n20 28i 93oct ots s1. That can't be 18% HP / 28% TQ.

On a side note... N20 20i gain according to this is mind boggling. (I thought the n20 20i have weaker internals). This is probably why they blowing up.

[anotheran]

Originally Posted by Gen13 F36

Wait... what is this?

First post on this thread comes with a dyno for 283HP / 324 LBTQ from a n20 28i 93oct ots s1. That can't be 18% HP / 28% TQ

It’s 19.6% compare to their baseline stock of 236.8 so pretty inline with their % estimates

[bgalakazam]

I found more of a jump stage1->2 than going stock->1. But adding a downpipe probably did help. I already had the intercooler in stage 1.