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Easy way to boost performance, but results very varied dependant on type of engine. Normally more benefit with forced induction for example, as the pressure is easy to increase.
There are variations in maps and 'chips' between tuners, too.
Downside is that it costs, as does the insurance change usually required, insurers aren't always big fans of modifications.
You might also reduce the longevity of components but there's so many variables concerned with this.
What's the car?
efb
TheButchersDog
So chipping cars - bad idea or an easy way to boost performance?
The figures look a bit too good to be true.
Was looking at https://www.chipexpress.com/