high octane fuel question

[Dave92270]

Originally Posted by guruerror

95?! WOW!

I'd think you'd be fine with no programming change...

...however, I'd be temped to put in a 'Performance' tune and spend the weekend mashing the pedal on that fancy Autobahn; especially if you've got the 5.3.

I know , high octane sounds fancy and performance promising, but not sure if H3 engine is capable to take advantage of it, BTW, today I bought some 15 gallons (around 60 liters actually here) of 95 octane, but they usually offer 98 octane as well. However today at this particular station I saw 100 octane fuel as well. They market it as "premium high-octane automobile benzin".

I think that I hopefully wont hurt anything using 95 octane without modification of computer. However, I'll give a call to guys who did mods on my H3 to be EU registered, they may offer some performance adjustments in the computer...

well if anyone else has experience with this stuff I'd be glad to hear it, thanks