looking for tune and some other info

[aob511]

i did some reading on here but no info really recent or difinitive.. I have a 13 x1 35i
at this moment i have the bms jb4 installed, im wondering if this is the only option i have rigt now for an untracable tune. Also hase anyone put wheel spaces on their x1.. If so any information would be awesome.. And lastly i feel like bmw robbed me of the exhaust sound potential of my car.. I have read a little about swapping mid pipes.. Anyone done this, what donor mid pipe will i ned to pick up..
Thanks in advance for any help..

[Buggy_PR]

Hola!! How is it going with the JB4 on the X1 35i? I've heard there are some N55 135i mods that work with our X1 35i. I just bought a downpipe for 135i N55 and will see fitment by the end of the week on my X1.

Saludos!

[aob511]

I definatly noticed a huge differance with the jb4.. Im borrowing it from a friend with a 135.. probably going to buy one..

[wantm135i]

iam looking to do all the same mods any info will help thanks