Could This Be True??
Any updates yet? It sure would be nice if someone from HPT would give some input on this. The latest software removes TM for the downshifts and during the shifts which is very noticeable but nothing has been done for removing TM from a idle standing dead stop launch. We need a fix for this very soon!
Here is his reply:
It's not TM.
Its airflow directly removing timing from the in rush of the near instant transition from high manifold vacumn to near atmospheric,that volume of air is rapidly sucked in and causing the timing tables to react with negative timing killing power.
As i posted in another post here,simply zero out all the negative values(or even go positive)in the timing tables. This is the range of cells in the lower left quadrant of the high and low octane timing maps.Try it you will be pleasantly surprised.
Here is another reply:
The reason is the inrush of air into the intake volume under vacumn at idle causes a transient high airflow condition through the MAF sensor,and it sends the airflow transient to the PCM,which sends ignition timing negative and kills all engine power.
Just try it for yourself...I don't need to document it because it works.
So what do you guys think of this guys theory that it is not TM and it can be changed in the high and low timing maps by changing all the negative values to zero or positive. Maybe someone that has HP at home and can try this to see if it really works would be great!
Any updates yet? It sure would be nice if someone from HPT would give some input on this. The latest software removes TM for the downshifts and during the shifts which is very noticeable but nothing has been done for removing TM from a idle standing dead stop launch. We need a fix for this very soon!
Here is his reply:
It's not TM.
Its airflow directly removing timing from the in rush of the near instant transition from high manifold vacumn to near atmospheric,that volume of air is rapidly sucked in and causing the timing tables to react with negative timing killing power.
As i posted in another post here,simply zero out all the negative values(or even go positive)in the timing tables. This is the range of cells in the lower left quadrant of the high and low octane timing maps.Try it you will be pleasantly surprised.
Here is another reply:
The reason is the inrush of air into the intake volume under vacumn at idle causes a transient high airflow condition through the MAF sensor,and it sends the airflow transient to the PCM,which sends ignition timing negative and kills all engine power.
Just try it for yourself...I don't need to document it because it works.
So what do you guys think of this guys theory that it is not TM and it can be changed in the high and low timing maps by changing all the negative values to zero or positive. Maybe someone that has HP at home and can try this to see if it really works would be great!


If everything else is good try zeroing out the retard and go from there as a starting point.











