Post 2006 2.5i to 2.5si conversion

[tannera34]

I have had a quick look on this forum and while the question has been asked before I cannot see a sensible answer

Can you convert a 2.5i to a 2.5si.?

Some people say it si three stage intake manifold, some say straight engine map, I have even seen variable exhaust manifolds.

What I have not seen is a sensible authoritative answer. I know with the combined knowledge on here and the wider web that someone knows. Please help all us 2.5i drivers to get that little bit more fun from our cars.

Please can someone give guidance as the engines seem very similar to me (I have owned both in my time)

Thanks

 

[srhutch]

Somebody asked this before on here and did some investigation, from memory it want possible really, it is more than just a map.

Engines are similar, but so is the 3.0si as they are all N52 engines