Great video, very clear and concise. As far as the turbo boost being misreported, this is a known limitation when you use a JB+. I have a B48 330i that caps out at 18 PSI stock. With a JB+ installed, my boost gauge is still reporting 18 PSI stock even though I set the JB+ to +3 PSI, so I know it's actually making 21 PSI. I reached out to the company that makes my boost gauge to ask why that was happening and they confirmed that the gauge can only report what the car is supposed to make (or 18 PSI), and not what the JB+ is "tricking" it to actual making (or 21 PSI). It's a bit annoying, but a small price to pay for safe boost and extra performance. Also, it's worth looking into what your turbo's maximum boost cap is. On my B48, I think the max boost is 21 PSI. It's possible your turbo is capped out at 8 PSI, but it's also possible it's a bit higher than that, so you may actually be making 11-12 PSI with a JB+.
Great question Zendy. Yes, you're correct to state that the JB4 makes more power and is more customizable. However, not everyone is prepared to spend almost twice the cost of admission and wants that much more power. The JB+ is intended for those on a budget you wants OEM+ performance levels with install simplicity.
Should we fit it as in this video belore the air intake box pr use the maf sensor right after the intake(above the intake like you have in your other video)
Hi Peter keep up the good work...I have a question...I'm going to install a catless downpipe and my s3 2016..do I have to go stage one or two tuned..because I don't want to flash my car..I just want to used my jb4...thanks
Hey Clive, hope you're doing well. If you're going to install a catless DP, you do not need to flash a tune since you're running the JB4. The only reason why you would want to flash a tune is to "turn off" the CEL warning that will come as a result of the catless DP. To take it one step further, you can stack your JB4 on top of a tune and "fine tune" your tune if you want to go crazy. There are many cars that stack.
@@TheAutomotiveFanatic would usage of the JB+ still be detectable by a Mini/BMW dealership/mechanic? like I would obviously remove it before servicing, but wondering if the changes to boost are logged in some way that would cause issues with my warranty. obviously hard to tell for certain, but would appreciate your thoughts!
@@canuckforce1 great question to ask. Let me put this out there...IF you were to blow your motor using ANY tune, a dealership scan tool WOULD be able to detect overboost due to the severity of the problem. However, if you're simply having general services performed, there's no reason why a service technician would need to "dive" that deep into the ECU parameters. Therefore, I think the JB+ would be fine.
