I used the search function but haven't found exactly what I'm looking for to be honest.
I'm looking for peoples experiences with the Viper2 chip for the 318is?
Also looking for any experiences with the 318is zone chip.
And finally any reviews of the 318is BBTB as well.
Are the gains noticeable and is the part throttle drivability the same / improved with any of these products?
Thanks in advance.




