# NU-B question.. Very simple **URL:** \ **Category:** SON240sx Automotive\ **Created:** [March 12, 2008, 7:47am UTC](https://forums.speedlife.net/t/nu-b-question-very-simple/113812 "2008-03-12T07:47:19Z")\ **Posts on this page:** 1\ **Showing post:** 17
**Author:** ![educated\_Idiot](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/educated_idiot/32/5684_2.png) [@educated\_Idiot](https://forums.speedlife.net/u/educated_Idiot)\ **Post date:** [March 21, 2008, 7:00am UTC](https://forums.speedlife.net/t/nu-b-question-very-simple/113812/17 "2008-03-21T07:00:53Z")
> [@blown turbo thoeries](https://forums.speedlife.net/t/blown-turbo-thoeries/16342/9): > > i dont wanna be a jerk but > 91oct in a N/A with regular compression ratios will give you absolutly no performance gain in fact it does the opposite The octane rating is a measure of the autoignition resistance of gasoline and other fuels used in spark-ignition internal combustion engines. It is a measure of anti-detonation of a gasoline or fuel. so the higher the octaine raiting the less your N/A will perform. on the other hand it will get you better mileage and burn cleaner just thought you should have some facts lol, which is it? “absolutely no performance gain” or “on the other hand it will get you better mileage and burn cleaner” Those facts are confusing --- _[View the full topic](https://forums.speedlife.net/t/nu-b-question-very-simple/113812)._