Im getting ready to swap an 2002 ej25 into a 2003 Legacy with no engine. The 03 legacy has an extra connecter that the 02 engine dosn't have. I started calling around local wrecking yards to get an 03 intake manifold for the 02 engine. The wrecking yards data say an 02 ej25 wont work in an 03 Legacy Ive seen the work around on this message board , but not I able to find it. The connecter in question on the 03 is the six prong gray coneccter between the the square white and brown conneters in the picture.

 

I think whats going on is the 02 engine has a map sensor engine . My 03 legacy uses a maf sensor. I think the six pin gray plug is for a maf sensor. If thats true is there a work around to use the 02 map senor engine in an 03 thats looking for a maf sensor?

Edited January 18, 201610 yr by steve56

Can't help directly in identifying that 6-prong connector.

 

But what I can tell you is that my 2002 5MT Forester, which has the EJ251 engine, does NOT have that grey connector.

It just has the two large white and brown connectors. No sign of that extra 6-prong grey connector.