It was quite simple, it was harder getting the 2.5 out than putting the 2.2 in. Everything was plug and play just like they said, I`ve got 140psi on 2 and 145 on 2, not as hi as I had hoped for but good enough and fairly close. The check engine light came back on after about 10 min of running, found out it was the knock sensor, replaced it and no light. This motor purrs like a kitten and has as power as my 2.5 had. I am very pleased with everything.  Thank you all again.  God Bless

It was quite simple, it was harder getting the 2.5 out than putting the 2.2 in. Everything was plug and play just like they said, I`ve got 140psi on 2 and 145 on 2, not as hi as I had hoped for but good enough and fairly close. The check engine light came back on after about 10 min of running, found out it was the knock sensor, replaced it and no light. This motor purrs like a kitten and has as power as my 2.5 had. I am very pleased with everything.  Thank you all again.  God Bless

I replaced the 2.5 with a 2.2 in my 98 OBW a couple of years back. I, too, find the 2.2 to be a smoother engine, less vibration too.

Yes! it is smoother, quieter, and has just as much power as the 2.5, but it was not running right when i pulled it. I am very curious as to what mileage I will get now. I`m running premium to get away from the ethanol. The wife is happy and that is what really counts! She even said she could tell the difference in how much smoother it felt.

Yes! it is smoother, quieter, and has just as much power as the 2.5, but it was not running right when i pulled it. I am very curious as to what mileage I will get now. I`m running premium to get away from the ethanol. The wife is happy and that is what really counts! She even said she could tell the difference in how much smoother it felt.

Going to the 2.2, you loose maybe 20-30 hp., compared to the 2.5. It isn't that noticeable, until you want to accelerate hard on a freeway on ramp, or try to pass someone. Gas millage will be maybe 2-3 mpg better then the 2.5

 

Like we both agree, the 2.2 is like velvet smooth in operation. Somehow, the 2.5 doesn't have the smoothness. I own 2 Outbacks, a 98 & 99, one with the 2.5, the other with a transplanted 2.2, so the difference is very noticeable to me.