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Running the wire was not as hard as I thought and the app that controls the JB4 is very easy to use.
I plan on running the stock map 2 for about a week to do some logs then start messing with E85 and map 6.
If anyone has any questions or advice please don't hesitate to PM me I will help with anything I can. I have installed 3 tunes now so I feel pretty comfortable under the hood.
I'm on the fence with a JB1 or JB4 but had a question on the different maps. Are maps 1 & 2 the same for both JB models? I think it's 4psi and 6psi over stock right? I don't plan on running custom tunes or higher octane that often. It's a daily driver but would like to have the added power from time to time.
Also for 2019 C43's is it still 4 and 6 psi over what the stock is set at? Thanks!
I'm on the fence with a JB1 or JB4 but had a question on the different maps. Are maps 1 & 2 the same for both JB models? I think it's 4psi and 6psi over stock right? I don't plan on running custom tunes or higher octane that often. It's a daily driver but would like to have the added power from time to time.
Also for 2019 C43's is it still 4 and 6 psi over what the stock is set at? Thanks!
I'm on the fence with a JB1 or JB4 but had a question on the different maps. Are maps 1 & 2 the same for both JB models? I think it's 4psi and 6psi over stock right? I don't plan on running custom tunes or higher octane that often. It's a daily driver but would like to have the added power from time to time.
Also for 2019 C43's is it still 4 and 6 psi over what the stock is set at? Thanks!
Basically the short answer is yes for map 1. I personally would go for the JB4 though as most users will eventually catch the "Mod Bug"
Plus, you can always sell it down the line and always make something back.
I am going to keep a close eye on this thread. I am still running Map 0, and like you, haven't connected the green wire. Hesitant, but might go ahead when I put on my MST. I bought some gold reflect foil for the panels and pipes to hopefully get temps down futher.. I don't think we have E85 here (I could be wrong) but there are some higher RON (100 and up) fuels. Are you on the WhatsApp? If so, who are you?
I am going to keep a close eye on this thread. I am still running Map 0, and like you, haven't connected the green wire. Hesitant, but might go ahead when I put on my MST. I bought some gold reflect foil for the panels and pipes to hopefully get temps down futher.. I don't think we have E85 here (I could be wrong) but there are some higher RON (100 and up) fuels. Are you on the WhatsApp? If so, who are you?
Yes I am I have seen u on there I am Danny on there
Good idea on reflect tape I actually saw that on a supra once.
According to user on what's app he did not see any heat soak when car was driving but did notice Temps increase when in traffic or idiling for long periods.
I have been watching iat on the jb4 and have noticed the same with stock air box
Yes I am I have seen u on there I am Danny on there
Good idea on reflect tape I actually saw that on a supra once.
According to user on what's app he did not see any heat soak when car was driving but did notice Temps increase when in traffic or idiling for long periods.
I have been watching iat on the jb4 and have noticed the same with stock air box
I noticed that also, but I figure I will try something new to see what the effects are.
Hi, I had a jb4 installed on a 2016 c300 and it made my engine lag and gave me the CEL a couple of times.. the engine felt weird afterwards and had to remove the module. I'm afraid it might do the same to my 2017 C43. Any past history like that?
That's why I was once considering a software tune like eurocharged or something...
Hi, I had a jb4 installed on a 2016 c300 and it made my engine lags and gave me the CEL a couple of times.. the engine felt weird afterwards and had to remove the module. I'm afraid it might do the same to my 2017 C43. Any past history like that?
That's I was once considering a software tune like eurocharged or something...
Your input would be highly appreciated!
TIA!
You won't have any issues on the C43. On the C300 maybe was an under boost fault from not connecting the hard to reach MAP sensor? On the C43 the install for all sensors is super easy. Completely different than the C300.
You won't have any issues on the C43. On the C300 maybe was an under boost fault from not connecting the hard to reach MAP sensor? On the C43 the install for all sensors is super easy. Completely different than the C300.
yeah man, you’re gonna be fine on the C43 and you’ll love it
Running the wire was not as hard as I thought and the app that controls the JB4 is very easy to use.
I plan on running the stock map 2 for about a week to do some logs then start messing with E85 and map 6.
If anyone has any questions or advice please don't hesitate to PM me I will help with anything I can. I have installed 3 tunes now so I feel pretty comfortable under the hood.
Next up is MST Intake!
I have a question. I'm getting a DP installed in the coming weeks. I already have a JB4, but am wondering how the JB4 calibrate the ECU once it's installed? Is there a specific map I should he using? I was told to use the performance emwnce map. Which one is that? I typically only use map 1 or 2. I'm also waiting for a log check to confirm its safe as I only have access to 91 octane.
Also, I'm in Canada so I can use the passive delete option to eliminate the CEL but is that something I do once the first time, after it registers?
Love the Jb4. I run a 30% mix of e85 with 93 and run map3 daily with about 10k on it so far. No issues at all. I've run a best of 11.7 at 118mph with no other mods on my 2018 c43 sedan. Haven't hooked up the green wire can anyone explain the additional benefit?
Love the Jb4. I run a 30% mix of e85 with 93 and run map3 daily with about 10k on it so far. No issues at all. I've run a best of 11.7 at 118mph with no other mods on my 2018 c43 sedan. Haven't hooked up the green wire can anyone explain the additional benefit?
I believe you should connect it when using a mixture of gas, as you're doing currently. Record a log and post on the N54 forum to have them check to ensure all is well.
anyone else have bluetooth connectivity issues with their JB4? after like 3 weeks of having mine installed it would just lose connectivity randomly...i'm exchanging it through the vendor I bought it from. Feel pretty strongly that it is the signal, says its weak where you go to update the firmware.
anyone else have bluetooth connectivity issues with their JB4? after like 3 weeks of having mine installed it would just lose connectivity randomly...i'm exchanging it through the vendor I bought it from. Feel pretty strongly that it is the signal, says its weak where you go to update the firmware.
Where is your bluetooth adapter? I'm only a few days in, but no issues so far. The installation guide made mention to point it a certain direction towards the cabin.
05-02-2019, 09:53 AM
