Posted By: DanTheManc
First mod fitted to my 335i - with short video's - 25/07/2012 13:47
I've owned my BMW 335i for a few months now so I've treated myself to a JB4. A JB4 is similar to a tuning box with a few addition features. This is a very popular mod for the N54 engine as used in the 335i.
JB4 features
Since fitting the JB4, the power delivery has gone from being very linear to now having an aggressive kick on boost.
I currently using the JB4 at its factory default settings so I still need to tweak the settings as there seems to be a lot of lag. There's a lagfix option which can be adjusted but I havent had chance to alter or play about with this yet. First impressions are great when on boost but way to laggy at the moment. I hope with some fine tuning the lag will be reduced. The JB4 has an auto learning feature and need's time to work correctly with the ECU so I'm going to leave everything at their default settings for now so the lag may sort itself out.
Heres a couple of short video's.
30mph-70mph sprint
Decided to remove the other video for obvious reasons
JB4 features
Since fitting the JB4, the power delivery has gone from being very linear to now having an aggressive kick on boost.
I currently using the JB4 at its factory default settings so I still need to tweak the settings as there seems to be a lot of lag. There's a lagfix option which can be adjusted but I havent had chance to alter or play about with this yet. First impressions are great when on boost but way to laggy at the moment. I hope with some fine tuning the lag will be reduced. The JB4 has an auto learning feature and need's time to work correctly with the ECU so I'm going to leave everything at their default settings for now so the lag may sort itself out.
Heres a couple of short video's.
30mph-70mph sprint
Decided to remove the other video for obvious reasons