|
For BMW you'd be looking at Upsolute, GIAC or Shark Injector.
Those brands tend to do more European cars.
Still, chipping isn't worth the money on a non boosted car. I saw 30-40hp gain on chipping my Jetta (1.8T). You'll see 5-10 with a naturally aspirated BMW.
Not worth the money for the power you gain.
|