# Trying to get the GM V4-V8 motor better MPG

**URL:** <https://forums.speedlife.net/t/trying-to-get-the-gm-v4-v8-motor-better-mpg/45218>\
**Category:** NYSpeed Automotive\
**Created:** [March 18, 2008, 10:49am UTC](https://forums.speedlife.net/t/trying-to-get-the-gm-v4-v8-motor-better-mpg/45218 "2008-03-18T10:49:16Z")\
**Posts on this page:** 1\
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**Author:** ![ultradriver10000](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ultradriver10000/32/7397_2.png) [@ultradriver10000](https://forums.speedlife.net/u/ultradriver10000)\
**Post date:** [March 22, 2008, 3:41am UTC](https://forums.speedlife.net/t/trying-to-get-the-gm-v4-v8-motor-better-mpg/45218/2 "2008-03-22T03:41:53Z")

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I can’t believe they don’t idle in 4…I don’t think you will find too much info on this. You will need someone who knows the ECU’s inside and out. I don’t think the dealer will help you. A dealer generally won’t edit your computer to your wishes. Maybe try a chevy tuner shop like new era? I know Mike has had to deal with newer chevy ECU’s.

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