Jb4 tune on my 14 x1 with the n20 engine

[nickn20]

Just looking for some input on the jb4 tunes. I’ve had mine for about 15k miles and haven’t had any issues. After some research, I have gotten some conflicting answers on whether the jb4 is a quality tune. I am aware that a flash tune would be the better option, but my x1 isn’t able to be flashed. If anyone has had experience using a jb4 or has done extensive research on them, could I get some information on the quality?

[maxwmiller]

I believe the consensus is that for tuning the N20 X1's, the JB4 is the best off-the-shelf tuner. Dinan had a tune out for the E-chassis N20, but is no longer available. MHD and bootMod also aren't available for our 4 cylinder E84s.

Any kind of tune will be pushing the N20 towards the material limits of the engine. Metal charge pipes, an intercooler, a downpipe, and the tune will run a user at least $1500 to make 350WHP. Any more power requires forged internals, and that just isn't cost effective.

On the other hand, going to Map 2 and running 20 PSI can be a lot of fun. A 3500 lb car with 300 HP and AWD is probably faster than most people have ever experienced.

[Gamb1t]

I run a Dinantronic Sport piggyback since 2017. 0 problems. Car is stock otherwise.

[bucketfoot]

Don't have the car anymore, but I ran the JB4 on my X1 for about 3 years with absolutely no issues.

This included daily driving and multiple track days.