Originally Posted by Subyroo2.5
Patrick, as much as it pains me to say this.....Your wrong.
The 06+ 2.5i's run like hammered dog crap on 87. They ping and thus pull timing on loads at certain RPM's. Switching to 91 this week I noticed an instant difference. This has also been logged by several people.
Also the IAM's are higher on our newer models while running higher octane.
I'm not talking about a ferrari vs honda difference but in layman's terms the car is happier on high octane
This is so true. Before I got tuned for 91, I would run 87. On 87, my engine sounded like there was a damn marching band drumline in there. 89 helped out quite a bit, but there is absolutely no ping whatsoever now that I am tuned.