# My "cahr killah", DSR class racer **URL:** https://forums.speedlife.net/t/my-cahr-killah-dsr-class-racer/238150 **Category:** Builds **Created:** [August 4, 2008, 7:28pm UTC](https://forums.speedlife.net/t/my-cahr-killah-dsr-class-racer/238150 "2008-08-04T19:28:17Z") **Posts on this page:** 1 **Showing post:** 44
### Author: ![Boxersix](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/boxersix/32/6327_2.png) [@Boxersix](https://forums.speedlife.net/u/Boxersix) #### Post date: [March 4, 2009, 5:43am UTC](https://forums.speedlife.net/t/my-cahr-killah-dsr-class-racer/238150/44 "2009-03-04T05:43:04Z")
> [@986 Girl](https://forums.speedlife.net/t/986-girl/15043/3): > > What kind of PCM will you be using for the shifting? Is it like a one off microprocessor design that your cousin is building or something ready-made, just program and go? Something my cousin is programming for me. He says relatively simple in terms of small chip propgramming. Using a wheel speed sensor and a pot input to determine vehicle speed and current gear selected, PCM will control the activation of the ignition interrupt and pneumatic solenoids based off the programming. I’m doing it so I can’t bang down through the gears too fast and overrev the engine. The PCM will not activate the solenoids if it’s going to over rev the motor, it will wait until rpms drop past a safe point then shift to the next gear. --- _[View the full topic](https://forums.speedlife.net/t/my-cahr-killah-dsr-class-racer/238150)._