2021年3月6日 · I'd recommend setting your user adjustments back to the default settings, your meth scale to 60, and your additive to 50. Click on our banner to visit our website! Video of our Stage 2 LPFP upgrade installation.

2018年6月19日 · With aftermarket turbos you will always have overboost issues until you dial it in with the jb4. The fail safe cuts in after a second or two and by the time that happens you could already be done with your quick pull.

2015年2月4日 · Show timing, throttle blade position and boost target. I find JB4 logs very easy to read, just need the right data displayed! It really isn't adding much waste-gate duty cycle at the beginning where you are hitting around 17psi. Just towards the end when it wants to taper.

2018年2月22日 · I've a JB4 ready to go on after a couple of thousand miles and I was hoping to fit a catted downpipe too probably BCS, APR Milltek. I'm a little concerned that two local tuners have now advised that I'll get overboosting issues with the JB4 rather than a flash tune, and a downpipe. Is there any truth in this?

2021年6月27日 · Update your JB4 firmware and set menu 4 to option 2 since you are running a BEF. Then take a proper log and we'll take a look at it.

2018年8月31日 · 1. Definitely stop driving it with the jb4 enabled, that AFR is way too lean and is knocking. 2. Post your JB4 settings or attach the csv so we can see what they are. 3. Also, do you have a Jb4 bef? This is a flash tune that supplements the JB4 - it's not necessary, but just curious. 4. Also the cars ecu has a stock flash, right? 5.

2015年9月8日 · So my turbos just got replaced by the dealer and when I reinstalled my jb4 my boost on fuel and oil both skyrocket to 20psi ON EVERY MAP. This is not normal. I've noticed that the boost builds up steadily when going wot 0-16ish psi and then right when I shift the boost jumps to 20psi. It also jumps to 20psi if it's an extended WOT.

2017年9月28日 · I set menu 4 to 2 and FF back to 80 and relogged (attached)- it's driving much smoother now, appears to have solved the overboost, no more switch to Map4 however: - FF still goes up by itself, after a few miles of driving it's up to 92, is this value adjusting normal?

2015年6月8日 · Contact Burger Tuning technical support and they will change a few settings on your JB4 to fix the overboost issue. Check out our current sale by clicking on this link! 2 things can cause throttle closure. 2- overboost. I do see that your car is overboosting.

2019年5月29日 · Jb4 is great if you tune the duty bias for when you normally go WOT. So I would turn down db values and try map 6. If you want to go WOT above 4000 rpm you will need a flash only tune. Originally Posted by Fuel-It! Doesn't seem like a software issue. WGDC is really low but boost is still way up there. WG binding maybe?