I was about to buy the JB4 stage 2 until I saw this post on another forum.
Originally Posted by PeterC4
I was hoping for COBB too, I went with Burger JB4. They have downpipe mods too, the JB4 has been trouble free in very hot and cold weather...and makes a real difference. There are 2 stages, I have stage 1.
As you can see on the Dino sheet the JB4 still needs to be refined. If they manage to refine their tune I might buy it.
2011 535i (07/2011 build) Imperial Blue, Oyster/Black Interior, Anthracite Wood Trim, ZSP, ZPP, ZP2, ZCV, 2TB, 6NF, 6NR.
Retired: 2009 328i,Titanium Silver, Black Interior, Dark Wood Trim, ZPP, ZLP, 609, 494, AAW Tune.