PIC's and EST on a GM for traction control

[Thomas Matthews]

Nope, 1969 Pontiac... thankfully missed the catlytic converter
"revolution" by a few. What's this about bearing sensors? Are they
an OEM app? I do like using OEM parts whenbever possible...
Just think, a 30 year old car with EGOR, EFI, and PIC-TC (anybody
got any ideas for cool names? How about PIC-TiC?)
I like the simplicity of a reading the engine, rather than the front
wheels, but suspect cal would be way off at low rpm's due to
converter slippage... 
Tom

richard vandervoort wrote:
> >
> If you are running this on the street with a catalytic converter you need to model the catalyst temperature and limit spark retard and cylinder drop out via your model so you don't burn up your catalyst.  I don't know what vehicle you are using but creating a vehicle reference velocity from non driven wheels is the only way to go.  Try using junkyard parts for speed sensors, make sure the tone rings are not dented or get integral bearing sensors.