SCT X4 Question

[C2_SHO]

I was doing some datalogging and it seems that the log is showing my mph to be somewhere between 10-15 mph lower than what my speedometer is showing. Is this something to be concerned with or are tuners really not interested in the speed portion? Thanks in advance for any info on this.

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[krewat]

I've done datalogging on a few different vehicles with my SCT X3, and it always seemed spot on.

 

[SHOdded]

What year SHO and how many miles? Wonder if the IPC needs recalibration or replacement... are you logging directly on the X4, or ...

 

[C2_SHO]

2010 with 86k miles..I am logging on a laptop.

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[SHOdded]

Here is the TSB I was thinking of

SPEEDOMETER INDICATOR NEEDLE STICKING OR INACCURATE-BUILT ON OR BEFORE 3/25/2010
TSBID: 171226 Mfg Num: 10-18-7 Issue Date: 2010-09-13

 

[C2_SHO]

Here is the TSB I was thinking of

SPEEDOMETER INDICATOR NEEDLE STICKING OR INACCURATE-BUILT ON OR BEFORE 3/25/2010
TSBID: 171226 Mfg Num: 10-18-7 Issue Date: 2010-09-13

Thanks SHOdded, I will have that looked at.

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[C2_SHO]

Decided to check speeds using a GPS speedometer app and it was dead on with my speedometer in the car. I will wait to see what Torrie says when he reviews the logs. I will let everyone know what I find in case anyone else runs into the same thing.

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