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speedo error

Posted: Thu Feb 12, 2009 10:45 pm
by Yknhotshot
I just bought a predator model u7198 for an 2002 chevy silverado. This is my first programmer and know nothing but when I put the new tire size in for 20's the speedo says that i'm doing 100 when I'm only going maybe 15 to 20 miles an hour any info would be greatly appreciated
thanks.

RE: speedo error

Posted: Fri Feb 13, 2009 9:52 am
by sickREDsierra
you may want to post up what revision the tool you purchased is on, as there could be an update for it to fix any previous problems associated with it ;)

other than that, it sounds really weird.

RE: speedo error

Posted: Fri Feb 13, 2009 10:40 am
by mikel
Soundslike a bug that was fixed in the latest revisions.

Posted: Fri Feb 13, 2009 9:18 pm
by Yknhotshot
9r09 is the revision number

speedo error

Posted: Sat Feb 14, 2009 1:10 pm
by rangercliff
02' avalanche, have had the same problem since sept. 08, new revisions or updates will not solve problem. have had 2 custom tunes written to correct speedo and still 8mph off at 65

RE: speedo error

Posted: Sun Feb 15, 2009 1:22 pm
by neonhomer
You could try changing your aspect ratio for the tire to see if that will fix it. This might only work though if you stay with the same size rims...