Hi Guys, Recently installed the JB4 on my 2015 M235i 6-speed.
Everything went pretty well on the install. Only took about 15 minutes to complete the hardware install, and another 15 to download the latest firmware etc. I decided to turn on map2, because I have an intake, and my exhaust / DP is on the way. All gas around here is 93, so it made sense.
I noticed an increase in boost, the time the boost holds, and a pretty noticeable increase in power. The only issue I'm having, is when I launch or open it up completely. The boost holds and the car keeps accelerating all the way through 7,000 RPM / redline when I shift. AS SOON as I shift and get back on it, there is a noticeable "lag" for roughly an entire second or two. Its so noticeable, that it feels like traction control kicked in and cut power. I literally get jerked forward at the loss of power. After a second or so, it picks back up and you can hear the boost again. It then takes a second or two to actually feel like I've connected again. So strange. Do you think this is a boost limit issue with the tune? Back-pressure issue because I don't have the exhaust / DP on yet?
For the record, I've driven many tuned and even a few big turbo cars (all german), and never have experienced anything like this. My initial reaction was traction control coming out of second gear, which made perfect sense. When I turned traction control completely off (by holding down the button), it still happened, which is why I am here. Also for more information, I only downloaded the latest firmware (3.0) - and hope that is all I need. If I need to install each individual one, let me know.
ANY input would be greatly appreciated. I've never really used a setup like this and I'd rather not try and act like I know what I'm doing.
Everything went pretty well on the install. Only took about 15 minutes to complete the hardware install, and another 15 to download the latest firmware etc. I decided to turn on map2, because I have an intake, and my exhaust / DP is on the way. All gas around here is 93, so it made sense.
I noticed an increase in boost, the time the boost holds, and a pretty noticeable increase in power. The only issue I'm having, is when I launch or open it up completely. The boost holds and the car keeps accelerating all the way through 7,000 RPM / redline when I shift. AS SOON as I shift and get back on it, there is a noticeable "lag" for roughly an entire second or two. Its so noticeable, that it feels like traction control kicked in and cut power. I literally get jerked forward at the loss of power. After a second or so, it picks back up and you can hear the boost again. It then takes a second or two to actually feel like I've connected again. So strange. Do you think this is a boost limit issue with the tune? Back-pressure issue because I don't have the exhaust / DP on yet?
For the record, I've driven many tuned and even a few big turbo cars (all german), and never have experienced anything like this. My initial reaction was traction control coming out of second gear, which made perfect sense. When I turned traction control completely off (by holding down the button), it still happened, which is why I am here. Also for more information, I only downloaded the latest firmware (3.0) - and hope that is all I need. If I need to install each individual one, let me know.
ANY input would be greatly appreciated. I've never really used a setup like this and I'd rather not try and act like I know what I'm doing.
Aucun commentaire:
Enregistrer un commentaire