Tunning problem

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civic_hct
Posts: 2
Joined: Fri Mar 20, 2009 1:50 pm

Tunning problem

Post by civic_hct »

I am tunning a evo3 when i finish tunning and do the chip all is ok but next day the car start running rich and I reset the ecu *take the batery and put it againg* the car work ok Inuse the car and hapen againg pls need help
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Mangus
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Posts: 1926
Joined: Wed Mar 19, 2003 1:49 pm

Post by Mangus »

Perhaps a checksum issue? There aren't too many Evo experts here.
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1989 Trans Am
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