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my new diff with the 3.58's is being installed as i type. i am having the speedo calibrated saturday. i was gonna have the shift points adjusted as well. any suggestions as to what they should be set to? any other adjustments while we are in there? tia.
xcal 1 by the way if it matters.
Posted by: 01lssport
Is it possible to adjust the speedo for tire size with the Xcal 1?
Posted by: 00ls-sport
that would be good to know as i run 255/45/17 in dry months and 215-60-16 during winter(coming off tomorrow!!!!).
Posted by: Quik LS
it is possible to correct the speedo - but the user software (Extreme Tune) is not very good for the XCal 1. Your tuner can do it for you and send you a new file.
The XCal 2 has a better interface - though I have not used the user adjustibility....
Posted by: 02V8Sport
I dont know about changing the ratios on the 00-02's because I could never get it to work right. On my 04 it sets off the check engine light.
Posted by: 00ls-sport
so far no cel.
quick, i will not be doing any of the tuning. the sct dealer will. any suggestions on shift points or anything else thjat can be done? i'm sure "you" have ideas!
