|
Cobb/JB4/MHD
Hi
I have a 2006 335i and keep hearing about these products.
I'm sure everyone will have their own opinion, however what's the best of the bunch and are they all safe without any other modifications?
Why would you pick this over a mapper...mapping the car?
From what I understand the MHD is the easier one to use as you do it off a phone?!?
I'm not fussed about ease, just a safe way to get more power.
Thanks
|