# Fuel psi question... **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [October 26, 2008, 9:26am UTC](https://forums.speedlife.net/t/fuel-psi-question/57087 "2008-10-26T09:26:08Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Slopoke](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/slopoke/32/7248_2.png) [@Slopoke](https://forums.speedlife.net/u/Slopoke)\ **Post date:** [October 26, 2008, 9:26am UTC](https://forums.speedlife.net/t/fuel-psi-question/57087/1 "2008-10-26T09:26:08Z")
I always think about this but forget to post it… Do i use as much gas if i floor it in 5th at 2k and slowly let it climb as i would if i was to redline 3rd and then shift to 5th? ---
**Author:** ![psychopjv](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/psychopjv/32/7251_2.png) [@psychopjv](https://forums.speedlife.net/u/psychopjv)\ **Post date:** [October 26, 2008, 9:43am UTC](https://forums.speedlife.net/t/fuel-psi-question/57087/2 "2008-10-26T09:43:00Z")
only way to tell truthfully would be to look at certain engine parameters during each. you don’t have to redline it, but i would agree you’d get better mileage by using more of other gears first to get to the desired speed. Putting it in a higher gear at slower speeds only lugs the engine and is putting more load on it. a car in 4th gear at 35 mph is doing less work than a car in 5th gear at 35mph (generally speaking), depending on gearing/powerband of course. ---
**Author:** ![Boomin99GT](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/boomin99gt/32/7306_2.png) [@Boomin99GT](https://forums.speedlife.net/u/Boomin99GT)\ **Post date:** [October 26, 2008, 9:58am UTC](https://forums.speedlife.net/t/fuel-psi-question/57087/3 "2008-10-26T09:58:37Z")
A lot of it would have to do with how much load you’re putting on the engine. If you’re very light on the throttle climbing to speed in a higher gear maybe not. Do some data logging and see where you’re at.