Can JB4 cause misfire?
The only way to get rid of the misfires is uninstall jb4 physically. After uninstall jb4 everything is fine.
Does JB4 have warranty?
Seller warrants that BMS Performance Tuners (JB+, Stage1, JB4) will be free from manufacturing defects for five years after delivery, and all other BMS labeled products will be free from manufacturing defects for one year after delivery.
Can dealers see JB4?
Actually according to jb4, if it’s installed and uninstalled correctly each time. The dealership would have no way of seeing any tampering. Bmw will detect your JB4 if they dig deep enough.
How much horsepower does a JB4 tune add?
Power gains of up to 100hp on a stock vehicle without the risks of flashing! Units shipped 3/5/2021 or later include a free electronic wastegate (EWG) connector preinstalled in the JB4 harness! The JB4 is the most advanced and highly featured tuning system available for your B58 and B48 vehicle.
Will a JB4 void warranty?
The JB+ or JB4 does not void your warranty. However if there is a failure or a part that could be attributed to the aftermarket device, that warranty claim could well be denied.
Is JB4 tune detectable?
(Immediately I regret the question) He continues to tell me that The JB4 “ARE” in fact, detectable. The cars have a fall safe reading for psi levels off the ECU and what not, and if they are screwy they are inclined to flag your car even before you come and claim warranty.
Do JB4 tunes void warranty?
Is JB4 an ECU tune?
The JB4 is a plug and play tune available for turbocharged vehicles. The JB4 tuner installs between your car’s sensors and its DME/ECU (computer) and manipulates vehicle performance through these connections making your vehicle much faster.
Can JB4 adjust timing?
While performance is usually very similar between the two there are a few things the JB4 just can’t do including changing fuel injection timing (exhaust pops and bangs), raising the RPM limiter, adjusting valve timing, and in some cases, raising the speed limiter.
Does JB4 void warranty?
Are piggyback tunes detectable?
Some rumors are going around here about VW being able to detect piggyback tunes like the JB4. From the JB4 man himself: not true. They are impossible to detect once removed. Even then, one case of a repair getting covered is no guarantee your’s will be.
Does a JB4 void warranty?
How much power does a JB4 make?
What I have seen people pick-up from a JB4 with stock components has been about 30-60 whp depending on the map. So, I think the car in stock form should be good for 400-420 hp at the crank which gets it pretty much to M4 level.
Does JB4 remove speed limiter?
You can only remove the speed limiter with a flash tune as well as add burble. The Hex tune will raise the speed limiter to 192mph. Not to discredit you, but some people, like myself, don’t have the time or simply aren’t in an area where a shop exists that can fiddle with the ECU and tune it specifically to the car.
Can you custom tune a JB4?
Because of the dynamic nature of JB4 tuning, it is able to self-tune critical and difficult-to-dial-in aspects of tuning such as wastegate control and fuel trim range for various modifications, climates, and vehicle conditions, largely eliminating the need for expensive and time-consuming custom flash tuning.