A backend flash without jb4 is not going to be what you want and is probably what he's talking about.
19+ Jb4 Bmw M3
Images. Disable jb4 / full pass through mode map 1: The jb4 is a plug and play tune for your turbocharged bmw.
N54 Jb4 Bmw Performance Chip Tuner Free Shipping In Usa Burger Motorsports Inc from cdn.shopify.com
Bms s63tu jb4 tune obdii bmw m5/m6/x5m/x6m w/ bcm module. Slightly more aggressive version of map 1 intended for vehicles with. Suitable for all stages and fuel mixtures.
The jb4 installs and removes easily and includes.
320i, 328i, 330i, 335i, m3, sedans, coupes, wagons, etc. Stage1 map adding approximately 40whp and 40wtq across the power band on pump gas. The car is moving so fast the cluster thinks it's standing still. We recommend it as the starting place for all those new to modifying their car and those who intakes.
