Quote:
Originally Posted by JMX6V8
Myaddiction,
I have Velos Stage 2 tuning on my 2010 X6 5.0. I was thinking on getting the JB4. Are you saying that both of these are the same?
|
No, The tunes are all the same.
The JB4 is a piggyback (basically a computer that intercepts the signals from the factory sensors and modifies them to make the factory ECU do what the piggyback manufacturer wants.) The Factory BMW ECU is very adaptive and will protect the engine even when it is being fed modified signals to a point. Which is why the JB4 is so popular on BMWs but other car brands don't really have something comparable.
Apples and Oranges really though the end result is similar. The JB4 has a lot more features and adjustments you can't get with a tune.