Can someone explain the different types of computers available.

J DAWG · July 7th, 2003, 03:10 PM

Ok I will ask the stupid ?'s. Just curious exactly what piggyback, band-aid, ecu, motec, and other lingo means.

What type are vec-1 & 2?
:bonk:

**Snake Bitten** · July 7th, 2003, 03:32 PM

Band-aid is that hillbilly festival Willy Nelson puts on down in your neck of the woods, every other year or so, when he needs to get the IRS off his back...

J DAWG · July 7th, 2003, 04:02 PM

These are serrrrious ?'s. Now get the hell out of my thread. [img]/images/graemlins/flipa.gif[/img]

ps - gonna give you a call tonite to discuss stuff unless you bizzy. Can't remember if monday is polish night at the smith's or not. [img]/images/graemlins/laughing.gif[/img]

**GaryA** · July 7th, 2003, 04:06 PM

An ECU is generally the car's stock computer. A piggy-back computer works in conjunction with ECU (hence the term piggy back) to give the ability to intercept/alter various ECU signals typically for timing and fuel adjustments.

Motec is a brand of automotive computer. I'm not sure what the VEC1 and VEC2 are, but my guess is that they would be considered piggy-back computers too.

HP · July 7th, 2003, 05:33 PM

'Piggyback' chips - like the VEC and DASTEK, don't directly control the
spark advance and injectors, they just alter the sensor feedback that indirectly influences spark advance and injectors. They intercept the intake
air temp sensor, coolant temp sensor, and MAP sensor - and send the PCM an
altered signal that allows the motor to operate at a more favorable performance mode. The MOTEC is essentially a stand alone ignition system that
directly handles spark advance and injector pulse.