7MGTE base timing set at 5* BTDC?

[BLACKCAT]

After my last tune I checked the base timing and it was set at 5 degrees BTDC.
I dont know if this was done as a safety margin or was the result of calibrating the CPS.
When the engine is dead cold it idles a bit low & slightly rough until it warms up a bit.
From all the info that I have read the timing is supposd to be at 10 degrees.
Running aftermarket ecu (Microtech) & 10 psi boost.
The static timing on the ecu has been set at 10 & max. timing of 40 degrees.

Now my question is if I increase the base timing to 10 degrees will this equate to an additional 5 degrees of timing at WOT which could lead to detonation?

 

[Fletch124]

Im assuming the Microtech is a standalone and not a piggyback. Piggyback requires the stock ECU. I would have to think that Microtech will hold whatever timing parameters you have set to it on your tune. And it should recognize the new timing. Im thinking you may have to take some timing out of your tune. I could be wrong.

 

[TurboStreetCar]

If its a standalone, and it does not have active timing monitoring using knock sensors, advancing the timing from 5 degrees BTDC to 10 degrees BTDC will advance the entire curve at any point 5 degrees BTDC.

The EMS only knows what you tell it, adding timing without telling it to compensate will cause an advance of timing across the board.

If your motor was tuned with the base timing at 5 degrees BTDC i would leave it there as in boost it could cause engine damage adding timing without putting the car on a dyno to make sure its safe.

 

[figgie]

If its a standalone, and it does not have active timing monitoring using knock sensors, advancing the timing from 5 degrees BTDC to 10 degrees BTDC will advance the entire curve at any point 5 degrees BTDC.

The EMS only knows what you tell it, adding timing without telling it to compensate will cause an advance of timing across the board.

If your motor was tuned with the base timing at 5 degrees BTDC i would leave it there as in boost it could cause engine damage adding timing without putting the car on a dyno to make sure its safe.

nosechunk

he has a microtech not a stock tccs. Standalone's base timing is a cell which only affects that cell and it's interpolated cells that are a product of the cells in direct contact with that one cell.

For the TCCS you are right.

For the standalones, you are not.

 

[TurboStreetCar]

nosechunk

he has a microtech not a stock tccs. Standalone's base timing is a cell which only affects that cell and it's interpolated cells that are a product of the cells in direct contact with that one cell.

For the TCCS you are right.

For the standalones, you are not.

This is true, but the standalone needs to be informed of the new base timing. Advancing timing without any modifications to the tune file will cause an across the board increase.

For instance, my 8860 has a base (initial) timing box. I select "locked" to set the base or initial timing then whatever i set the base timing to i input to that box.

Then the EMS knows where its starting from so when you put 15 degrees in a cell on a timing map it knows where 15 degrees is in relation to the motor.

If i change my base or initial timing from 5 degrees BTDC to 10 degrees BTDC without changing the base timing value in the software the timing map will be 5 degrees off, advanced.