I was reading firmware 20/1 updates ,terry mentions on the second point that he changed the boost limit for the first and the second gear ,how would this affect my take off (0-100)? any one tried this?

how about the adaptive PID? is this enabled by default on the new firmware?

what is PID???

FAQ

What is adaptive PID?

Adaptive PID is not the same as full "autotuning", but it's an important component to it. It's an algorithm to adapt the boost control to your cars specific wastegate stiffness, mods, local conditions, etc. We'll be building upon it in future releases while we simultaneously add the other components needed.

As you do subsequent WOT pulls you'll see the FFMAX value under user settings adjust itself between 0-130. This represents how much of the duty cycle increase is fixed/hits instantly and how much is variable through the PID process. Ideally you want most of the increase to come through the fixed/feed forward as it will result in you hitting your target much faster than waiting for the PID to integrate to it. But if the value is overly aggressive you'll get overshoot and throttle closure. So the adaptive PID ranges FFMAX based on historic data collected during WOT runs. Right now its ranging one value which scales the entire 3D curve but the next step on adaptive PID will be to have it learn on a cel by cel basis (rpm, gear, target).

its mentioned on the first page of this thread...but i am curious to know if any one tried this with the new firmware, any change to take off(0-100)? ,hows the driving experience with this option enabled?

Love CmGs with jb4 and Map 3. Pid is adjusting nicely! I see PID change when I swap fmic's, use richer mixes of meth, and add octane boost. Car is so friggin fast that without a dyno or a time slip, it's hard to say how well its working. My car is getting ready to hit 70K. It's my DD and been JB tuned since 30K. 1/4 mile runs from a stop scare me now so I rely on my butt dyno more and more.

I have configured the future use option = 2

Where it is configured in 1 st and 2 nd gear, is 10 psi (or configuration that is suitable for the 0-100m) ???

I use map 3 (methanol progressive)

+1 (minus the meth part). I thought it was under the 1st and 2nd gear boost redux? I set those at 10.0 and they still go above 12-13 PSI in 1st and 2nd.

You may see throttle closure spikes, DTC, etc, above that but the target should reflect what you entered. If not email in a CSV and we can check it out.

For my own sanity, could someone please verify for me that the JB4 won't connect to the laptop until it is installed on the car because of the need for the power source?

That is correct! You need to have the JB4 installed on the car before being able to access it via laptop because of the need for a power source.

Thank you.

I was losing my mind until that thought occurred to me.

Dumb Question: I have downloaded the latest software and firmware, now what do I do? How do I update the JB4 module?

Tried searching the thread without luck (52 pages and growing is a wealth of information, but not easily found). Thanks in advance!

You just go upload firmware from interface and select HEX file to upload. :)

Now I feel dumb, I should have looked before asking. Thanks for your help! :)

If any of you "lonely hearts" have time tonight/tomorrow morning and want to help the cause I have some new firmware that needs logging. While I'm out with the wife pretending I'm not thinking of work... ;)

Just email me.

I might be able to help tomorrow :D

Emailed...I'll even bring the mrs with to help log! ;)

Hey T, can you explain the bold portion of what you said? Are the new CM tanks suppose to be compatible with 100% meth?!?!

The tank and pump have always been 100% compatible. It's just the flow sensor that can lock up with pure meth. So CM is testing something new and better. I hope to start testing it myself in a week or two.

Cant wait to see that! Im ready to get a kit and use the progressive meth!

IM IN!!

OK got plenty of takers. Thanks for the help guys! :)

Lolz, I was just about to email you cuz I drive vast distances to work until March, plenty of opportunity to enjoy some spirited runs...

If all goes well I'll post it in a day or two.

So how many Mac users running JB4 interface? :)