Chip

[bawareca]

Originally Posted by split71

Thanks for the response. I don't think anyone has "insisted" that they resemble a proper tune as they obviously don't. As you stated, not many options for the X5d. I'm not a big fan of PB's but it does make a nice improvement on the X5.

I have a question; have you driven an X5d with a PB device?

They work as intended and increase the power, fact no one would argue with. The unknown factor is how much long term "damage" PB will cause to the subsystems EGR, DPF, intake, etc which are extremely picky even under the factory computer control.
As a matter of fact I would not think twice to install PB on a gas engine, but wouldnt do that on my diesel if i have the intention to keep it for long time.