Converting to DBW Throttle for Auto-blip

[mfain]

I installed a 6XD sequential transmission and I needed a drive-by-wire throttle to take advantage of an ECU-controlled auto-blip for no-clutch downshifts. I have a Wilson Dominator throttle body that has mechanical linkage. I installed a BMW throttle drive motor and connected it, through the MoTec, to a GM DBW throttle pedal. I then used mechanical linkage from the drive motor to the TB. There is no slop (the motor is on front and mid motor plates and the drive motor is on a bracket welded to the cage dash bar), so the TPSs in the TB and drive motor stay in sync. The same set-up is used on some unlimited, injected off-road trucks and can be used with a carb or TB. The decision to do such an installation depends on how bad you want an ECU-controlled, precise auto-blip for road race no-clutch downshifts.

Pappy

75268

[camcojb]

That's pretty cool, hadn't heard of that option.

[cwylie]

More details on this trans, engine and ECU setup please.

[mfain]

More details on this trans, engine and ECU setup please.

There is a build thread in the Project Updates section: https://lateral-g.net/forums/showthread.php?t=54785&page=6&highlight=Track+Car+Project

Basically a 515 CI big bore/short stroke aluminum BBC, Tilton carbon clutch, 6XD sequential transmission, Detroit Speed Decalink rear suspension, MoTec M150 ECU.

Pappy