Scanmaster and TPS question

[blueta]

How accurate is the TPS mode of the scanmaster? Mine is reading .42@idle and 4.5 at WOT. With my meter it's reading .44/4.6 Thanks!

 

[TurboDave]

How accurate is the TPS mode of the scanmaster? Mine is reading .42@idle and 4.5 at WOT. With my meter it's reading .44/4.6 Thanks!

That difference is too small to even worry about. Your values are perfect.
BTW if you look on scanmaster with key on engine off, you'll see the same chage on scanmaster after the engine starts.