View Single Post
  #14  
Old 09-19-2010, 08:17 PM
Scarsman's Avatar
Scarsman Scarsman is offline
Hummer Professional
 
Join Date: Nov 2008
Posts: 261
Scarsman is on a distinguished road
Default Re: Fuel Injector / Throttle Body Service

Quote:
Originally Posted by Cesardajr
i thought the handheld tuner would correct the higher rpm's issue.
i also thought the 4.88's would make the engine work less.
i can see the higher rpm's without the tuner.

The tuner will correct the speedometer with the lower gears, but does nothing for engine rpm vs ground speed ratio. The lower gearing means the engine has to spin faster to make the axles turn the same speed they did with the higher gearing. That is what makes the moter have to "work less." Imagine a mountain bike. When you have it in an "easy" gear it is really easy to pedal but you don't go very fast. This is low gearing. Now if you put it in a "hard" gear, you pedal slower but you go faster. This is a high gear. You are experiencing the same effect that your engine will feel if you go to lower gears. To go the same speed as you did not a high gear you would have to pedal like crazy, and would become exhausted, or use more fuel.
__________________
2005 H2 SUV - Stealth Gray with Ebony interior - Third row - Exterior tire carrier -
Mirror caps - black bedliner
Roof rack rails - black bedliner
Wheels - Black bedliner on stock wheels
Gas cap lid - still chrome but will soon be black bedliner
Tail light guards - still chrome but will be black bedliner
Grill - Still chrome but will be black bedliner
Hmmmm, is there a pattern developing here?
Reply With Quote