ECU piggyback

1. p-nut Frequent Poster Joined: May 2007 Ireland Posts: 542 mk1 vts

   #1 31st July 2007, 18:36

   Im talking about the likes of the dastek unichip, how do these work, and what is the advantage of one of these over just a standard ecu remap?
2. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

   #2 31st July 2007, 18:41

   Fair question. GMC used to swear by these...
   
   Basically, it's called a 'piggyback' because it works in conjunction with the stock ECU, unlike standalone ECUs, which are replacement jobbies. The piggyback ECU will wire into the existing ECU and allow changes to be made (on the management side of things) to the stock ECU. There's not a lot of places that have the tools to make adjustments to stock ECUs, but they do however have the ability to make changes to the piggyback device, which then overrides the stock ECU's settings.
3. p-nut Frequent Poster Joined: May 2007 Ireland Posts: 542 mk1 vts

   #3 31st July 2007, 22:45

   Quote:

   Originally Posted by Toad Fair question. GMC used to swear by these... Basically, it's called a 'piggyback' because it works in conjunction with the stock ECU, unlike standalone ECUs, which are replacement jobbies. The piggyback ECU will wire into the existing ECU and allow changes to be made (on the management side of things) to the stock ECU. There's not a lot of places that have the tools to make adjustments to stock ECUs, but they do however have the ability to make changes to the piggyback device, which then overrides the stock ECU's settings.

   ah cool, so it would be beneficial to go for one of these if i was to cam my engine then, for ease of remapping? would this affect my aftermarket alarm system in any way?
4. KamRacing Saxperience Addict Joined: Nov 2006 A farm shed in Aylesbury Posts: 14916 Corolla AE86 Peugeot 205 B18C (in bits)

   #4 31st July 2007, 22:59

   I'd fit an aftermarket ECU with a wideband lambda to do a rough map... then go to someone for fine tuning.
5. Toad Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can

   #5 1st August 2007, 13:04

   What about this whole loom business Kam? It's driving me nuts trying to understand it all.