Is it possible to swap out a 2.5L from a 97 986 and replace it with a 2.7L from a 2001 986? Will the immobilizer need to be replaced? Any other technical issues? Do I need to convert the car to egas or can I just use the throttle cable?
All you need to do to put the 2.7L engine in the early car is swap the engine harness and put the center throttle body T with throttle body from the 2.5 on the 2.7 intake. I just did this to my dads car. We built a 2.9 out of a 2.7 and put it in his 99 Boxster.