Hi i was wondering if i really need to tune my h22a after putting in Pistions with 9:1 compression and type s cams? it will be with the stock ECU.

 

Ofcourse you have to tune, and I don't think you'll be able to on your stock P13 ecu.

 

your stock p13 wont run it at all likely. The pistons maybe, but once you put cams you need to tune. And why wouldn't you, you'll get a better performance output with tuning. You'll net way more HP with a tune anyway.

 

Planning on going tubo in the future? But, yes get it tuned.

 

It will run

But more then likely really rich so you risk washing your cylinders out

 

What injectors?