COBB Releases New v220 OTS MAPs - Major Update

[AMontgomery]

I'm just thinking, it would be nice to have a few parameters, in addition to an audible knock sensor, that could detect true detonation with more accuracy and less false readings. A true EGT reading would go a long way. And naturally, a pressure sensor in each cylinder would be ideal, but not practical.

Any ideas built in already that could be monitored to help deduce actual detonation?

 

[dyn085]

If you're having enough knock to actually be concerned with it will show up in your KS corrections. Depending on how aggressive the knock is it will either show up as a minor or major correction, and that should then be considered against the frequency and repeatability. Every engine is going to knock at some point or another, and anyone that was driving in the 90's should be able to recall the older cars pinging away driving down the road normally. Just because the KS's are picking up knock is not a bad thing (that's what they're designed to do), it's what happens before/during/after that tells the story.

Anyone that is seriously concerned with possible knock issues should take datalogs and post them, there are plenty of knowledgeable members in the community that can help analyze them.

 

[AMontgomery]

Thanks. Personally, I'm not worried about my car all that much after reading a few of the posts on the last few pages. My knock count is sporadic and rarely repeatable from pull to pull. It almost never happens at WOT. I'm running OTS maps designed for my mods. But I still like to know things are alright when I see things from time to time.

 

[koozy]

This new update saved me some money with the new I/M Readiness monitor status'. I was going to purchase a OBDII reader in the future, but now won't have to, so I really appreciate this feature.

Anyhow, just wonder if anyone has been able to get all of the applicable monitors in 'ready' state, with a map flashed or not? I was able to get all ready except for Evap System, which I'm still trying to get the car running in the right conditions so it may eventually pop up ready. I do have a map flashed.

 

[dyn085]

I don't have the v220 maps, can someone download/save the .ptm file and pm me to email a copy?

 

[SpooledUpST]

OK learning a lot. Glad hijacking this into a freak out thread has started working.

So what parameters would you guys suggest we use to datalog. And how do you post them to the forum? Clearly I've never done it before.

 

[koozy]

I don't have the v220 maps, can someone download/save the .ptm file and pm me to email a copy?

I can send you all of them.

 

[dyn085]

I can send you all of them.

I got them, thanks!

It'll take me a bit to compare, but the borderline timing maps appear to be the same. OAR is smoothed out much better than before. KS advance/retard is enhanced, but the overall upper limits aren't any different so it's just going to get to the cap or knock faster-and that's a good thing. There's a lot more to go through, but I'm going to just throw my fuel mapping onto one, bump the timing a few degrees and load it up tomorrow.

Edit: I've gone through them a bit more and there are actually quite a few changes, small or not, in the revision. Pretty exciting!

 

[AMontgomery]

KS advance/retard is enhanced, but the overall upper limits aren't any different so it's just going to get to the cap or knock faster-and that's a good thing.

That would explain the seemingly faster timing advancement and a few knock counts, would it not?

 

[dyn085]

That would explain the seemingly faster timing advancement and a few knock counts, would it not?

That's what I said, yes, but keep in mind that the borderline tables (timing advance) are still the same. Instead of reaching +6 (KS advance) high in the rpm range and having wasted the majority of your powerband, now you should be making better use of your fuel. Combined with the better OAR setup, this timing strategy should be much more effective.

And fwiw, my borderline tables had significantly more timing and I didn't have knock issues. Knock isn't something that I even monitor unless my KS is making constant or drastic reductions. I can't honestly remember a time that I've ever monitored it in the FiST.

 

[COBB Tuning1]

Hey guys, I'm not sure if the map notes made it up yet but here are the bullet points you are experiencing:

Adjusted ignition correction strategies to allow faster torque delivery in optimal conditions.
Adjusted octane learning strategy to enhance post-installation experience.

"Knock Count" is not something that should be used to gauge how the vehicle is performing. It is merely an indicator of perceived events fora listening period. The ECU uses this to determine if the advance rate / increment should be changed and continually monitors while adding or subtracting ignition timing. The OEM settings have a lethargic method which allows higher counts to trigger a rate change. The new settings have less tolerance for rate change but allow an increase in the rate that ignition timing corrections are used. This means you will have a much smoother advance curve up until the point in which it perceives knock (1 event vs 3 events). Once that event occurs, the rate and increment will slow until the next series of requirements are met or reset.

We've been using this method for an extensive period of time here on all of our shop vehicles, along with a plethora of test vehicles. No harm is occurring, only smoothly delivered power.

Cheers,
-Braden @ COBB

 

[dyn085]

Great explanation Braden, thanks!

 

[AMontgomery]

Thanks! That's great info!

 

[SpooledUpST]

Thank you Braden! I will be removing my knock counter and replacing it with another monitor so I stop being paranoid and I'll just keep Cyl. 1 Corr. up just to monitor. Btw, thanks for finally putting up a solid update. Thought you guys gave up on the FiST!

 

[COBB Tuning1]

Thank you Braden! I will be removing my knock counter and replacing it with another monitor so I stop being paranoid and I'll just keep Cyl. 1 Corr. up just to monitor. Btw, thanks for finally putting up a solid update. Thought you guys gave up on the FiST!

You're welcome! We've wanted to update the FiST for a while but had to lay some new groundwork before it could happen properly. Now you guys are all synced up with our latest features! More to come, this time in unison with everything else.

Cheers,
-Braden @ COBB

 

[JasonHaven]

You're welcome! We've wanted to update the FiST for a while but had to lay some new groundwork before it could happen properly. Now you guys are all synced up with our latest features! More to come, this time in unison with everything else.

Cheers,
-Braden @ COBB

Happen to have any dyno runs comparing the new release vs older?

 

[J2FoRS]

I'm a little confused on the Economy map thing now. So is the economy map still in slot 2? Or it doesn't exist? I used it all the time.

 

[dyn085]

I'm a little confused on the Economy map thing now. So is the economy map still in slot 2? Or it doesn't exist? I used it all the time.

I can double-check tomorrow if no one else confirms/denies, but I'm pretty sure it still is. The difference is that now the default slot when loading a tune is the power slot whereas before the default was the economy and everyone had to change slots right away. It got me every time.

ATR users can specify whichever slot they want, which is kind of neat for those that are using multiple slots for testing or different fuel blends.

 

[PhoenixM3]

I'm a little confused on the Economy map thing now. So is the economy map still in slot 2? Or it doesn't exist? I used it all the time.

Economy map just limits boost to 5 PSI correct? What are your overall gains in MPG? I'm still a newb with my AccessPort and haven't played with the economy maps yet.

 

[JasonHaven]

I just got my AP3, I updated it, and then installed it... and I don't really have 'map slots'. I plugged it in, it downloaded the stock, and installed the one I chose (Stage 1 93 220). There's a menu item for installing other maps, but no economy map, and it contains every OTS map (stage 0-3, 91/93, valet and anti theft). Can someone explain to dumb me how to narrow things down and just have a couple slots, and where one can find the economy map? Or do I need to download it from Cobb?