Difference between 2.5i & 2.5si

dpms2

Member
 Cambridge
Hi guys,

I have the 177hp 2.5i (Nov 2006). Is the 2.5si a fundamentally different engine, or is it just a case of an ECU remap to give the 218hp? Is it possible to upgrade the 2.5i?
 
They're both N52 engines but I don't know how they get the power difference between the two, although they are very similar.
 
Back
Top Bottom