Tuning the Trip Computer MPG Calculation
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Joined: Oct 2004
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*UPDATED* Tuning the Trip Computer MPG Calculation
See post #3 - new version of $DA2 available from TunerCAT!!
1992 LT-1, LT-4 heads, 383, supercharged. Some time ago I changed to 60lb injectors, and installed a new chip that was properly calibrated for my engine (including 60# injector constant). Since the new injectors and tune, the mpg indicator in the trip computer is way off, sometimes showing 47mpg on the highway (its more like 20-22). The car runs like a champ, slightly lean across all BLMs (max LTCounts are in the 140-145 range) but I'm just about to fix that.
I recently acquired chip burning hardware and I figured it would be 'nice' to fix the mpg readings. However, outside of the injector constant, I cant see anything in the BIN that might help.
Any advice.. or is this just something I have to live with?
1992 LT-1, LT-4 heads, 383, supercharged. Some time ago I changed to 60lb injectors, and installed a new chip that was properly calibrated for my engine (including 60# injector constant). Since the new injectors and tune, the mpg indicator in the trip computer is way off, sometimes showing 47mpg on the highway (its more like 20-22). The car runs like a champ, slightly lean across all BLMs (max LTCounts are in the 140-145 range) but I'm just about to fix that.
I recently acquired chip burning hardware and I figured it would be 'nice' to fix the mpg readings. However, outside of the injector constant, I cant see anything in the BIN that might help.
Any advice.. or is this just something I have to live with?
Last edited by djxib; Mar 9, 2009 at 02:42 PM.
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Joined: Oct 2004
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I found a good link to the topic here:
MPG / Trip Computer
My new question is; does anyone have a $DA2 definition for TunerCat that includes the "Display gal/hr" constant?
MPG / Trip Computer
My new question is; does anyone have a $DA2 definition for TunerCat that includes the "Display gal/hr" constant?
Thread Starter
Pro
Joined: Oct 2004
Posts: 628
Likes: 6
All I can say is - WOW - what great customer service. I contacted tc@tunercat.com late yesterday about this issue, and in my inbox today I received a link to download their latest version of $DA2 that includes the "display injector flow rate" constant. Great Service!!
