[335imofo]

Originally Posted by Payam @ BMS

When is it acting weird exactly?

Can you get a log of that?

The log I see here looks great from what I see. Everything is where it should be and you're making 4 psi more than stock, so it should be faster as well.

It felt sluggish and rough. The boost gauge is glitchy as well.
I removed it and everything smoothed out

[Terry @ BMS]

Originally Posted by 335imofo

It felt sluggish and rough. The boost gauge is glitchy as well.
I removed it and everything smoothed out

Boost as being read via the JB4 log looks smooth and as expected. I presume you mean the factory boost gauge? That is always going to reflect factory like boost levels, but if it's wobbling around lets see a video of that. Genrally JB4 box placement is the only variable at work here. If it gets too much EMF could cause weird behavior. Also note whether you have the issue on map0 with the JB4 disabled to determine if it's software or hardware related.

[jungo]

Originally Posted by Terry @ BMS

Had a customer connect the JB4 connections in the wrong spot limiting boost. Be sure rainbow patch is on the MAP sensor as shown!

Hello there
I just wonder how can I install the connector of map sensor. there is conflict between the installation guide and this post of the forum which shows the wrong and correct installation method of map sensor on manifold ? could you illustrate which one is correct?
many thanks.

[jungo]

Originally Posted by jungo

Hello there
I just wonder how can I install the connector of map sensor. there is conflict between the installation guide and this post of the forum which shows the wrong and correct installation method of map sensor on manifold ? could you illustrate which one is correct?
many thanks.

Can any one help me ?

[Terry @ BMS]

They are interchangable on this platform.

[Terry @ BMS]

Just added firmware with cyl 2-6 and gear logging. Could use a few logs on it to confirm it's working as expected across all models.

[Dleong01]

Hi Terry,
Quick log of firmware 718/7/77

Gears are working. IGN 2-IGN 4 not

[Terry @ BMS]

I see movement on cyl2! Try some longer full throttle runs.

[Dleong01]

Hi, Two full runs 2nd gear attached.

[Terry @ BMS]

Originally Posted by Dleong01

Hi, Two full runs 2nd gear attached.

Looks good to me!

[Dleong01]

Hi Terry, Are Ign 2, Ign 3 and Ign 4 working in this latest firmware revision?

[Payam @ BMS]

Originally Posted by Dleong01

Hi Terry, Are Ign 2, Ign 3 and Ign 4 working in this latest firmware revision?

From the log that you posted it is. It's counting knock instead of raw value like cylinder 1.

[Dleong01]

So Ign1 is raw value (actual ignition timing) and Ign 2, Ign3, Ign4 are measuring knock count. Is my understanding correct?

How much knock count is acceptable before i should be concerned?

[Terry @ BMS]

2-4 are timing corrections. There will always be some corrections due to the nature of the dynamic timing advance system. If you see corrections going up during longer runs consistently then that usually means you want to increase your octane level or reduce your boost target.

[Dleong01]

Hi JB4,
I am running JB4 WMI (MAP 7 - 100% additive) with a high flow turbo on my 718 Cayman S. I am only seeing 20.7psi max (track day log attached - V6 software version). Is this normal?
I would like to see if i can run 22psi. Is this possible? If so, what is the best way to achieve this with JB4?
I have heard that there is an ECU limitation of 1.6Bar (governed by Torque Demand).

Thanks

[Terry @ BMS]

Originally Posted by Dleong01

Hi JB4,
I am running JB4 WMI (MAP 7 - 100% additive) with a high flow turbo on my 718 Cayman S. I am only seeing 20.7psi max (track day log attached - V6 software version). Is this normal?
I would like to see if i can run 22psi. Is this possible? If so, what is the best way to achieve this with JB4?
I have heard that there is an ECU limitation of 1.6Bar (governed by Torque Demand).

Thanks

Drop me an email terry@burgertuning.com and we can see about enabling IAT spoofing for you to see if we can further increase boost that way.

[wynxo]

Hello,

I've installed my JB4 on my Porsche 718 GTS.
The power gain is really great.

I'm leaving in Europe and the fuel that I put in my Boxster is SP98 (98% octane) With this SP98 fuel, what is the maximum MAP that I can put?

Map0 - JB4 disabled
Map1 - 2psi peak 91 octane
Map2 - 3psi peak 91/93 octane
Map3 - 4psi peak 93 octane, race gas, or ethanol blend
Map4 - 6psi peak ethanol blend or race gas
Map5 - 8psi peak ethanol blend, race gas, CPI required


At the firmware level, I am currently in 718 6 HEX
Do you recommend to put the Beta version 718 7 HEX?

Thank you very much

[Payam @ BMS]

Go for map 3 and post a log so we can evaluate. Yes, you can update to the beta firmware no problem.

[wynxo]

Thank you

[wynxo]

Here you are one log file in map2

[wynxo]

And the second in map3

[Payam @ BMS]

Looks pretty good to me, you can try map 4 and get some logs please.

Longer runs with a shifts would be good too if possible.

[wynxo]

Thank you, I'll try map 4 next day and i'll post logs here.

For longer runs the max size of files csv accepted into the forum is limited at 488KB. Then, to be able to post my log file i had to delete 2000 lines at the end of csv file

[Payam @ BMS]

Originally Posted by wynxo

Thank you, I'll try map 4 next day and i'll post logs here.

For longer runs the max size of files csv accepted into the forum is limited at 488KB. Then, to be able to post my log file i had to delete 2000 lines at the end of csv file

Only a couple WOT pulls are fine, no need to do anything longer for me to evaluate.