Is there any difference between H22A2 and H22A4 engines? Me and all my friends here in Europe have the H22A2, but here I can see all of you have H22A4. Has one of them more power, more torque or where is the difference?

 

A4 is stronger. There are also some internal differences. Besides A4 is OBD2. And A4 is only in 5gen lude.
pentaq

 

Is there any comparsion table or some tech specs of these engines on the internet?

 

The euro H22A2 and US H22A4 are identical for all intents. Honda just uses different engine codes for different sales territories. Another example - The US Integra TypeR engine is stamped B18C5, while the identical Euro spec Integra Type R engine is stamped B18C6.

Andrew