what up im posting up a ArkDesign rev shift timer. im askin for 120 obo. will ship at buyers expense. this is brand new and has been taken out of the box for pictures only. here is the info off of ARK's site here is the link ill post pictures soon
http://www.arkdesign-us.com/usark-electronic-rst.asp

Rev-Shift Timer

The ARK Design Rev-Shift Timer is an innovative product that incorporates a Turbo Timer, Shift Light, A/F Ratio and Battery Voltage meter in a stylish compact design. Its multi-color LED indicator shows color changing A/F readings and well as shift point. Plus an industry's first See-Saw and roller button control adds uniqueness to the Rev-Shift Timer. Available in RED or BLUE LED display.

Multi-color LED Indicator for A/F and RPM shift light. Colors will change according to the A/F level & flash in white when shift point setting is reached.

Timer Function
Auto Mode calculates (by driving style) how long a turbocharged vehicle’s engine should run after the ignition has been shut off. Manual Mode – allows drivers to set desired the idling time.

Rev-Shift Function
RPM can be captured through either the alternator pulse or directly from the ECU. The shift light can be set to turn on and off at any RPM. The LED indicator will flash in bright white when the user preset shift point is reached.

A/F Ratio Display
A/F ratio can be displayed numerically on the LED display and in color ranges by the LED indicator. A/F ratio is calculated from the factory O2 sensor. Because most OEM O2 sensors are designed for emissions, the Rev-shift Timer’s readings may vary compared to a wide-band A/F meter. (A/F ratio readings will only work with the Zirconia type O2 sensors).

Battery Voltage Display
Battery Voltage can be displayed on the LED Display along with charge status.