You'll want to first look at your low fuel pressure in the JB4 logs. Done.Ģ) For those wanting to run higher mixtures (and more power) then you need to datalog. If you require assistance from BMS email us at Otherwise for log and tuning support post logs, details, and fault codes in n54tech's support section.Ĭan I use E85 ethanol fuel with the JB4? If so what mixture should I use?ġ) Generally speaking you can run 30-40% E85 without the need for logging or worrying about fuel trims, fuel pressure, etc. Support requests and bug reports are generally deleted or moved from this thread without being read.
I made a post asking for help in this thread and I can't find it now. If you set menu4 in dash to 2 the JB4 will presume a back end flash map is loaded and if its not the car will boost poorly, trigger 30FE faults, etc. Certain settings particularly duty bias and boost by gear are often missed causing under boosting and headaches.Ĭ) If you are running the STOCK flash map (you'd know if you aren't) then be sure to set menu4 in dash to 3, so the JB4 knows you run the stock flash map.
If your vehicle isn't running smoothly/correctly after installation:Ī) Update your firmware to the latest version in the post below.ī) Update your settings (on the user adjustment page in app or interface) to the last settings in the post below. There are a handful of very common mistakes.
Those racing on lower grade fuels, running strong E85 mixtures, larger than factory turbos, or those interested in doing custom mapping will want to consider a back end flash. If you ever encounter an automatic switch to map 4 review the FAQ below for addl information. Including boost over target, fuel pressure below target, and air/fuel ratio running lean. Same goes for oil temps > 280 degrees.ģ) The JB4 has several safety systems built in that will force a switch to map 4 (low boost) if the JB4 notices various conditions. So expect stock like boost until oil temps are > 160 degrees.
May trigger 30FF under boost code in cars not also equipped with the back end flash map.ġ) Steering wheel controls menu and video is in the 3rd post down.Ģ) JB4 has cold/hot oil protection built in. To use this map with E85 requires the E85 back end flash, inline booster fuel pump, and a 40%+ E85 mix, per E85 FAQ. Requires straight 100-104+ RM2 octane unleaded racing fuel. Map 6: User defined map generally only used for diagnostics or troubleshooting. Resets to 93 octane level adaptions when selected and adjusts itself up or down from there. If using E85 we suggest around 30% to start. Boost ranges between 12-17psi based on your cars octane, conditions, and modifications.
Allows full logging and in dash gauges on the stock mapping. Map 3: Progressive WMI water injection mapping with failsafe. Suggested for those with intake and other bolt on modifications with 93 RM2 or higher octane.
JB4 Mobile Smart Phone wireless connection directions Click hereīMS data cable hard wired directions and software Click hereįor the full JB4 Install Guide click here.
The latest JB4 ISO firmware is posted here. If you come across something missing from here be sure to let us know. Any and all relevant info is linked in this post. Anything from install directions, to firmware updates, to settings, to frequently asked questions. This is the central point of contact for all N54 JB4 related information. It is your responsibility to comply with all applicable federal and state laws relating to use of this part, and Burger Motorsports, Inc hereby disclaims any liability resulting from the failure to use this part in compliance with all applicable federal and state laws. USE OF THIS PART IN ANY OTHER VEHICLE MAY SUBJECT YOU TO FINES AND PENALTIES FOR VIOLATION OF FEDERAL AND/OR STATE LAW, WILL VOID YOUR WARRANTY FROM BURGER MOTORSPORTS, INC, AND CAN VOID YOUR VEHICLE'S WARRANTY. Competition-only motor vehicles may not be driven to a racing event on a public highway and must be transported on a trailer or other carrier. Health & Safety Code 39048) This part may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event. California law defines a "racing vehicle" as "a competition vehicle not used on public highways." (Calif. THIS PART IS LEGAL FOR USE ONLY IN COMPETITION RACING VEHICLES AS DEFINED UNDER CALIFORNIA LAW, AND IS NOT LEGAL FOR USE IN ANY OTHER MOTOR VEHICLE. Use subject to terms and conditions posted at