N54 JB4 BMW Performance Tuner

bumpin

>>17152769
Does it come with this lady over here

>>17152769
Find the JB4 DIY installation guide online, it's a PDF on how to install it. It makes hecka power but I guarantee that the supporting parts like the charge pipe, injectors or turbo waste-gate will fail from the more power. I recommend upgrading all those parts first, and normal BMW maintenance before the tune. But other than that, after plugging it in, I believe it's ready to go.

>>17152769
>How does it work?
Changes your fuel and spark maps to make your car make 3 more peak horsepower, with the tradeoff of it running like shit the rest of the time and decreasing the lifespan of your engine massively

Just changes your fuel map

you buy it on their website

it supposedly gives you ~90hp over stock at the most demanding map of 5.

yes it is worth it.

>>17152769
>tuning
Grow the fuck up anon. It's unreliable enough stock. Why would you want to make it worse?

Gitgud and use mhd instead

seriously jb4 is just a shitload of issues

File: vw TDI.jpg (422KB, 2168x1734px) Image search: [Google]

422KB, 2168x1734px

>tfw the new supra has to be slower than a camry unless you want to turn it into an unreliable turd.

>>17153824
BMW is funny like that.

Doing things that usually breaks other cars, makes bmw more reliable.

leaving it the fuck alone results in them needing a new engine 12k miles off the dealer's lot

>>17153988
well since its dubs ill ask. Whats Mhd.

Jb4 is a bad idea?