JB3

[coco_m3]

[baseballbreath]

So I got my JB3 in today and put it in this evening...HOLY CRAP! I took it out for a 30 min drive to see if I could get it adapted and WOW! Terry you and Burger Motorsports are awesome! This tune is amazing.

[ARES45]

Congrats, we need to get together before exodus hits. When are you heading out? My car will be a granny grocery getter next to yours now.

[Mike@N54Tuning.com]

Originally Posted by baseballbreath

So I got my JB3 in today and put it in this evening...HOLY CRAP! I took it out for a 30 min drive to see if I could get it adapted and WOW! Terry you and Burger Motorsports are awesome! This tune is amazing.

Congrats on the new purchase I am sure you will have many months of fun with it.

Mike

[Foofighterr]

Totally rookie question but I have been around car forums for over 4 years and never heard the word WOT... What is said WOT pull?

[miro2296]

Wide Open Throttle

[Foofighterr]

So floor it a couple times... Gotcha yea...

[fshowcars]

Originally Posted by laloosh

Can someone explain how this modification works? I have yet to hear of a car tuning itself and the last thing i would like to do is floor a car that is unaware of its tune, fuel trims, af ratio, timing ect ect. Do you guys have a way to monitor parameters as your flooing your car that has NO clue what is going on. Once again knock/af/timing? Thanks

it's a lot less drastic than it seems... this is a canned tune that is tested and tried and true with the N54 platform. So the tune itself is fine and will not cause detrimental issues. The 'learning' is simply the car taking in environmental variables, air temp, octane, engine temp etc and applying those measures to the tune to optimize it. So you can just plug this in and have no worries, after the car adapts the ECU (runs through the learning cycle) it could potentially make more power.

[dad]

Umm so I was kind of interested in Laloosh's questions but it looks like he was banned after only 4 posts. Two of them are in this thread and they didn't look especially provocative to me. I was hoping someone from BMS would chime in.

[Chewyjr15]

Umm so I was kind of interested in Laloosh's questions but it looks like he was banned after only 4 posts. Two of them are in this thread and they didn't look especially provocative to me. I was hoping someone from BMS would chime in.

terry has been banned so i he will not be chiming in.

[audi2bmw1]

why was this laloosh banned? he has very valid questions...many would like to know the parameters that are altered...and data logs to back them up...i miss my vag-com i had with the audi scene...we all should email Sales@Ross-Tech.com and tell them we all would love for them to make an OBD2 software and key

[jlee]

Now that V1.2 is out, how do you know which version your getting ?

Jeff

[topvega]

wow... banned after only 4 posts and none of them seemed inappropriate...poor laloosh....

[atr_hugo]

laloosh'll be back. And that's all I can say. ; -)

[gmag21]

When you say WOT's.. are you talkin like all the way to redline? Or like 4k-5k rpms "punched" from rest

[atr_hugo]

WOT = wide open throttle. Foot's all the way to the floor. It can be lifted at any point short of redline. ; -)

[onehungevo]

Originally Posted by laloosh

I am very familiar with how ecu tuning goes on various platforms. Like i said earlier i have yet to hear of poeple plugging in a bunch of resistors to their ecu and flooring their car so it learns. If it works it works, im simply asking if any1 has datalogs of what this actually changes and how the car reacts. Are any timing/knock graph available? af ratio? Boost pressure ect ect. Just because the car survived, doesnt mean this is exactly a good thing to do.

Anyone have answers to these questions? I'm used to the evo forum where this type of info is discussed all the time.

[jeremyc74]

Originally Posted by laloosh

I did some digging around and found out how this operates. Rumor has it that the car advances perferomance via timing/fuel untill it experiences knock, after that it backs off a hair to eliminate knock. Don't hold me to this though as it is all theory.....for now

However id bet my ass you guys are knocking during these reset ecu wot runs. Someone needs to buy a knock lite.

Every modern car in production does this. It's a requirement of OBDII. It's not even close to theory or rumor, it's been in practice for at least a decade. :iono:

[AussieRacer]

Does anyone know if each time you swap tune with the JB3 if it has to re-learn? That'd be my thinking and a severe limitation to the new easy tune change that v1.2 offers.

[dcafs]

Originally Posted by laloosh

That is incorrect, every modern car does not does do this. Every modern car backs off timing when it see knock at its regular set timing. Example, a car running in denver is going to have a different timing curve then a car running in new jersey.

So laloosh....what happens to the modern car when you put better gas in your tank...ie higher octane?

[jeremyc74]

Originally Posted by laloosh

It stops knocking and is able to run the timing programed into the stock ecu. If you put race gas in the car, most cars will not advance timing to the point of knocking and then back it off.

No they advance and retard timing and fuel curves based on the environmental factors they are experiencing. It's commonly refered to as adaptation, and it's a requirement of OBDII to be able to maintain performance and emissions as the vehicle ages and part wear.

[dcafs]

Originally Posted by laloosh

Yes but these adaptations have limits, limits that are set for normal driving conditions. If this car tunes itself for power by itself why do we even bother talking about tuning solutions?

Here's a statement by the tuner of the JB3:

The stock car, the procede, and the JB all "ride the knock sensors" in a sense 100% of the time. This is how the car adapts up to 8 degrees of timing between 91 octane , 93 octane, and 100 octane

The ECU will always straddle the line, which is most efficient for combustion. So take a stock car running on 93 octane, and then bring that octane to say 94. Timing will almost instantly come up. There is a range of around 8 degrees it moves fluidly through. If you go beyond that range, which you can do running say 15psi with no timing control, then you start getting check engine lights."

Both tuners state that their tunes work in conjunction with
1) the stock ECU knock sensors and
2) timing thresholds built into the ECU so as not to trigger out of range/implausibility engine codes.

So there is obviously some form of timing control going on, otherwise the tunes would be throwing engine codes left and right at 15 psi of boost pressure.