Hi my name is Mehmed and I own 2012 odyssey, would like to do small modification to increase 20-30 horse power, noting to much, what is safest and simplest way to do it. There is some chips but I am not sure if that is safe and don't want to void my warranty also. Thank you very much and I will appreciated your answer.

 

You're pretty much gonna void the warranty with any mod. Safest would probably be a tuning system.