Latency calibration

[flying.chimp at juno.com]

Guys,

Can someone explain why the following values for Usec don't make a smooth
increasing curve as RPM increases? 
What am I missing?

;----------------------------------------
; Spark latency correction, (USEC)
;
; TBL = VAL/15.26
;----------------------------------------
;                                           Usec     RPM
;----------------------------
L8129:    FCB 8 ;             122          800
                FCB 11 ;           168        1200
                FCB 12 ;           147        1600
                FCB 13 ;           183        2000
                FCB 17 ;           259        2400
                FCB 15 ;           229        2800
                FCB 13 ;           198        3200
                FCB 13 ;           198        3600
                FCB 13 ;           198        4000
                FCB 14 ;           214        4400
                FCB 14 ;           214        4800
                FCB 14 ;           214        5200
                FCB 14 ;           214        5600
                FCB 14 ;           214        6000
;-----------------------------------------

Cheers,
Wayne Johnson 
___________________________________________________________________
Get the Internet just the way you want it.
Free software, free e-mail, and free Internet access for a month!
Try Juno Web: http://dl.www.juno.com/dynoget/tagj.