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Old 03-10-2015, 10:58 PM   #8 (permalink)
firehawk618
EcoModding Apprentice
 
Join Date: Oct 2014
Location: Marysville, wa
Posts: 221

97 Civic HX sedan VX trans - '98 Honda Civic LX + HX + VX
90 day: 41.9 mpg (US)
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Quote:
Originally Posted by Jakins View Post
Yo I had an idea the other day. I'm going to test it out. The shift light comes on t
when you have really low load in every gear but 5th. Sooo all you gotta do is find out what wire tells the ecu that the car is in 5th, disable it and bam, you got an economy light. It would be perfect for anyone without an mpg gauge. Im going to try and figure it out and report back.
Resurrecting an old thread because I am going to be swapping D16Y5 in place of my D16Y7 in the next 2 weeks.

There is no 5th gear sensor. I'm betting money that if the shift up light doesn't come on in 5th it's because the ECU sees the RPM + vehicle speed and knows it's in 5th gear.
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