Cas Timing...

[ClutchBurndout-:(]

hey all, been reading up about cas timing and what effects it has if its go the wrong settings, now, i know sfa about CAS's, do you need the car to be professionally tuned when working with the CAS? how do you know what setting it should have? i hear a lot of people adjust them themselves but i realy have no clue about them, i only just learnt that CAS stands for cam/crank angle sensor lol

can anyone shed some light on adjusting it if it is the cause of overfueling/misfiring at higher rpm? and what to set it to? my car is stock apart from the exhaust, fmic, and im running 8-9psi, so it needs to be set to standard or something to support the basic mods i have there.

cheers guys

[Moodles2]

Don't adjust it without a timing light, otherwise if you have no clue what your doing then you will demage your motor if you advance it.

[ClutchBurndout-:(]

Don't adjust it without a timing light, otherwise if you have no clue what your doing then you will demage your motor if you advance it.

i dont want to advance it, i want to put it to stock (if its not timed right, i need to check)

is there indications on the unit that says 15 degrees etc?

[Moodles2]

Dead middle is stock position, but if you have a tune, it can be anywhere from fully retarded to fully advanced. But even without a tune, you still need a timing light to verify dead middle is still stock position, as it could be slightly to the right or less of middle as the CAS affects the base timing.

[ClutchBurndout-:(]

Dead middle is stock position, but if you have a tune, it can be anywhere from fully retarded to fully advanced. But even without a tune, you still need a timing light to verify dead middle is still stock position, as it could be slightly to the right or less of middle as the CAS affects the base timing.

darn, i dont think mine is dead center, infact its off a bit, its a stock ecu so i can only do it via a timing light, and the ecu should learn correct?

[mad082]

it might not be exactly dead centre at 15 degrees. you are best to get a cheap timing light and check it.

as for the ecu learning, they don't learn that much, so if you have it pinging away it will eventually cause damage (even though the stock ecu will retard the timing if it detects pinging).

also to correctly set the timing you need to put the car in base idle mode so that the timing is locked at 15 degrees otherwise it can be out by 1 or 2 degrees at idle depending on air temp, engine temp, any issues with the IAC, etc. to put it in base idle mode either use a consult cable, or warm the car up fully and then turn the car off, unplug the TPS and start the car again.

[ClutchBurndout-:(]

it might not be exactly dead centre at 15 degrees. you are best to get a cheap timing light and check it.

as for the ecu learning, they don't learn that much, so if you have it pinging away it will eventually cause damage (even though the stock ecu will retard the timing if it detects pinging).

also to correctly set the timing you need to put the car in base idle mode so that the timing is locked at 15 degrees otherwise it can be out by 1 or 2 degrees at idle depending on air temp, engine temp, any issues with the IAC, etc. to put it in base idle mode either use a consult cable, or warm the car up fully and then turn the car off, unplug the TPS and start the car again.

man this sounds confusing, i might have to take it to a workshop, or ask one of the friendly sau members to give me a hand whos done it before!