# e85 and carb **URL:** https://forums.speedlife.net/t/e85-and-carb/193333 **Category:** PittSpeed Automotive **Created:** [October 28, 2007, 1:47pm UTC](https://forums.speedlife.net/t/e85-and-carb/193333 "2007-10-28T13:47:30Z") **Posts on this page:** 1 **Showing post:** 18
### Author: ![69camaro](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/69camaro/32/6046_2.png) [@69camaro](https://forums.speedlife.net/u/69camaro) #### Post date: [October 29, 2007, 12:55pm UTC](https://forums.speedlife.net/t/e85-and-carb/193333/18 "2007-10-29T12:55:30Z")
> [@NYIRP: Wednesday 8/1/07](https://forums.speedlife.net/t/nyirp-wednesday-8-1-07/33179/35): > > you will make less power on 85 than regular gasoline. Unless you have an insane CR or something that doesn’t allow you to run anything but race fuel you will not benefit. All octane ratings tell you is your fuel’s resistance to burn. Higher octane = harder to ignite, hence the reason you run it to stop detonation or pre-ignition. The harder it is to ignite the less power you can make. he is right high octaine has a slower burn rate which reduces detonation in high compression and boosted motors. you only want to run the higher octaine if you NEED to. If you do run e85 you wont lose power because it will make it back with the cooler intake temps of alcohol --- _[View the full topic](https://forums.speedlife.net/t/e85-and-carb/193333)._