Hello my fellow tuners!
I'm seriously starting to concider chipping my 2009 BMW 118i M-Sport. As I was buying the car this spring I really wanted to get 120i but due to availability and taxing was not able to do so. However, this week I ran in to a local tuning company that claims they can make my 118i almost as lively as 120i: http://www.chip-tuning.fi/brand/car/BMW/
118i 143 Hp --->+20 Hp and + 30 Nm making it a bit bit less powerful than 120i but actually more torquey. This is really tempting.
But as the car is NA petrol engine these figures seem a bit ambitious to me. I don't know who's chip they are using, they just broadly tell that they represent a "known" manufacturer. I have two main concerns:
1) What are main negatives when chipping a petrol engine?
2) Can they really squeeze that much hp and torque out of NA petrol engine?
3) Should I do it?