Hey,
I'm a DISI and Mazda noob.
I do know about Nissan Ecu's & Engine's.
I just bought a 2008 MS3 sport with 13,500 miles on it.
It was owned by a 37 Yr old.
Still has stock tires on it.
I don't think the car was beat on or modified in anyway.
When I got it, it was 100% Stock.
I drove it 4hrs...